[go: up one dir, main page]

EP0511921A1 - Modular supporting system for floor forms; method and form using this system - Google Patents

Modular supporting system for floor forms; method and form using this system Download PDF

Info

Publication number
EP0511921A1
EP0511921A1 EP92430014A EP92430014A EP0511921A1 EP 0511921 A1 EP0511921 A1 EP 0511921A1 EP 92430014 A EP92430014 A EP 92430014A EP 92430014 A EP92430014 A EP 92430014A EP 0511921 A1 EP0511921 A1 EP 0511921A1
Authority
EP
European Patent Office
Prior art keywords
beams
formwork
primary
primary beams
support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP92430014A
Other languages
German (de)
French (fr)
Inventor
Hubert Ricard
Jean-Paul Bailly
Guy Demichelis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SCOP SOCIETE NOUVELLE RICARD
Original Assignee
Coffrages Ricard SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Coffrages Ricard SA filed Critical Coffrages Ricard SA
Priority to EP96116162A priority Critical patent/EP0751268A2/en
Publication of EP0511921A1 publication Critical patent/EP0511921A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs
    • E04G11/486—Dropheads supporting the concrete after removal of the shuttering; Connecting means on beams specially adapted for dropheads
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs
    • E04G11/50—Girders, beams, or the like as supporting members for forms
    • E04G2011/505—Girders, beams, or the like as supporting members for forms with nailable or screwable inserts

Definitions

  • the invention also relates to the methods and the formwork applying such a bearing system, the latter notably comprising a formwork skin constituted by plywood plates or panels placed on said bearing system.
  • Modular formwork systems of this kind generally have the advantages of being able to be set up quickly, with great ease, and of being able to be laid down, just as easily and quickly.
  • a formwork for concrete floors comprising: - props with drop head; - primary beams intended to hang on the heads of the props and comprising longitudinal support fins; - secondary beams also provided with longitudinal support fins and intended to rest on the lateral fins of the primary beams, these beams which may or may not be identical being shaped so that when the primary beams are hung on the heads of the stays and the secondary beams are positioned on the lateral fins of the primary beams, on the one hand, the upper surfaces of the secondary beams are arranged above the upper surfaces of the primary beams, while, on the other hand, the upper surfaces of the lateral fins secondary beams are arranged at the same level as the upper surfaces of the primary beams.
  • the formwork surfaces formed by plywood sheets or by boxes provided with a border are placed in abutment on the lateral fins of the secondary beams and on the upper surface of the primary beams and are embedded between the upper part of the sides of said secondary beams.
  • the supporting frame does not exactly cover the surface of the slab to be produced, so that it remains between one or more edges of the supporting frame and the wall or walls adjacent to the construction, a space devoid of any supporting structure.
  • a first object of the invention is to remedy the aforementioned drawbacks.
  • this objective is achieved thanks to a modular bearing system and to a process according to which the primary beams and the secondary beams are shaped so that when the former are hung on the heads of the props and the latter hung, by by means of their attachment ends, on the side of the primary beams, the upper horizontal surfaces of said secondary beams are arranged in a plane located at a distance and above the plane in which the upper surfaces of said primary beams are placed , this method being remarkable by the fact that the skins or formwork surfaces are placed in abutment on the upper faces of said secondary beams, so that a space is provided below said skins or formwork surfaces, between the planes in which are arranged the upper surfaces of the secondary beams and the primary beams, res pectively.
  • This arrangement greatly facilitates and simplifies the adjustment of the formwork surface to the surface of the slab to be produced, when the frame of the structure load-bearing does not exactly cover the surface of the slab.
  • the attachment ends of the beams comprise, above and at a distance from their attachment lug (s), a boss having a lower surface d 'support.
  • these metal spacers are constituted by primary beams and the props are arranged, in their lower part, to allow the attachment and locking of the ends of said primary beams.
  • This characteristic arrangement makes it possible to reduce the number of types of components of the modular bearing system for formwork.
  • Figure 1 is a front view, in summary, illustrating the modular bearing system for formwork of concrete slabs, according to the invention.
  • Figure 2 is a sectional view along line 2-2 of Figure 1.
  • Figure 3 is a plan view of this modular bearing system, illustrating a first example of implementation of the adjustment method allow the catching up of the difference in surface area existing between the slab to be produced and the frame of the supporting structure of the formwork .
  • Figure 4 is a sectional view and 4 on a larger scale along line 4-4 of Figure 3.
  • FIG. 5 is a sectional view on a larger scale along line 5-5 of FIG. 3.
  • FIG. 6 is a plan view of the modular bearing system according to the invention, illustrating a second example of implementation of the adjustment method allowing the difference in surface area existing between the slab to be produced and the frame of the structure to be made up formwork carrier.
  • FIG. 7 is a sectional view on a larger scale along line 7-7 of FIG. 6.
  • FIG. 8 is a sectional view on a larger scale on line 8-8 of FIG. 6.
  • FIG. 9 is a plan view of the modular bearing system according to the invention, illustrating a third example of the adjustment method allowing the difference in conformation existing between the slab to be produced and the frame of the supporting structure to be made up.
  • Figure 10 is a front view, with partial sections, of a beam executed according to the invention, mainly for use as a primary beam, but which can also be used as a secondary beam and / or as a stabilization spacer .
  • Figure 11 is a top view of this beam.
  • FIG. 12 is a view on a larger scale and in cross section along line 12-12 of FIG. 10.
  • Figure 13 is an axial sectional view of an end of the primary beam equipped with its attachment end.
  • Figure 14 is a front view of a primary beam butt.
  • FIG. 15 is a plan view and in half-section on line 15-15 of FIG. 14.
  • Figure 16 is a rear view of a primary beam butt.
  • Figure 17 is a sectional view along line 17-17 of Figure 16.
  • Figure 18 is a front view, partly in section, of an end portion of the secondary beam which, in this case, is different from the primary beams.
  • Figure 19 is a front view of a secondary beam butt.
  • Figure 20 is a sectional view along line 20-20 of Figure 19.
  • Figure 21 is a rear view of Figure 19.
  • Figure 22 is a top view of Figure 19.
  • Figure 23 is an elevational view with partial axial section, of the upper portion of a forestay equipped with a drooping head.
  • Figures 24 and 25 are plan and sectional views, respectively, along lines 24-24 and 25-25 of Figure 23.
  • FIG. 26 is a plan view, on a larger scale, of the descending cam allowing the descent of the drooping head.
  • Figure 27 is a sectional view along line 27-27 of Figure 26.
  • Figure 28 is an elevational view in partial section showing the attachment of two primary beams on a drop head shown in the high operating position.
  • FIG. 29 is a view similar to FIG. 28 and showing the decoupling obtained by the descent of the drooping head shown in the low position.
  • Figure 30 illustrates the dynamics of setting up a primary beam.
  • FIG. 31 is a detailed view of FIG. 30.
  • Figure 32 is an elevational view illustrating the arrangement of the lower part of the props to allow the fixing of the beams used as stabilizing elements.
  • Figures 33 and 34 are plan and sectional views respectively along lines 33-33 and 34-34 of Figure 32.
  • FIG. 35 is a perspective view of a frame cell of a supporting structure produced according to the invention.
  • This system comprises, in a manner known per se: - props or shoring posts 1, the top of which is preferably equipped with a drooping head 2; - primary beams or supporting beams 3 intended to hang on the heads of these props or shoring posts; - Secondary beams 4 called to hang on said primary beams.
  • the primary beams 3 and the secondary beams 4 are shaped or arranged so that when the first are hung on the heads 2 of the props 1 and the second hung, by means of their hooking ends 5, on the side of the primary beams 3, the upper horizontal surfaces S of said secondary beams 4 are arranged in a plane PP located at a distance and above the plane P′-P ′ in which the upper surfaces S ′ of said primary beams are placed 3.
  • the formwork skin or formwork surface 33 which may consist of a sheet of plywood having the desired thickness, is placed on the upper face S of the secondary beams 4, so that a space d is formed, below said formwork skin 33, between the planes PP and P′-P ′ in which the upper faces S are respectively arranged and S ′ of secondary 4 and primary 3 beams.
  • the beams 3 and 4 may advantageously be constituted by metal profiles such as aluminum profiles comprising, in a manner known per se, an upper groove in which is housed a fur 6 constituted by a wooden batten and a lower groove 7 allowing in particular the attachment of various devices or devices necessary for construction.
  • metal profiles such as aluminum profiles comprising, in a manner known per se, an upper groove in which is housed a fur 6 constituted by a wooden batten and a lower groove 7 allowing in particular the attachment of various devices or devices necessary for construction.
  • These beams 3 comprise, in their lower part and on each from all sides, a fin 8 inclined towards the outside and in the direction of the top, this fin extending over the entire length of said beams and delimiting a gutter or longitudinal groove 9.
  • the ends 5 of primary beam 3 comprise two latching lugs 10 arranged symmetrically on either side of the vertical axis of said abutment.
  • each end flange 5 comprises, on its rear side or internal side, at least one small console 13 and, for example, two small consoles 13 arranged symmetrically, on either side of its vertical axis.
  • These small brackets 13 are placed below and in contact with a horizontal partition 14 with which the profiles constituting the beams 3 are provided in their lower half-part, so that they support most of the forces applied to the primary beams , during use of the supporting structure.
  • the secondary beams 4 may be different from the primary beams 3.
  • they may advantageously be constituted by pieces of wood with a lamellar structure or by aluminum noss having a simple section, at the ends of which are fixed, by example by screwing, 5 ′ hanging ends.
  • the latter consist of flanges comprising, in a manner similar to the end flanges 5, a latching lug 10 ′ and a support boss 11 ′, having a lower support surface 11a ′.
  • They also comprise, at their base, a support sole 15 oriented towards the rear and fixed, for example by screwing, against the underside of the end of the beam proper, in particular when the latter is formed by a lamellar composite. . In this way, this metal support sole 15 supports most of the forces applied to the secondary beams, during the use of the bearing structure.
  • the distance D1 between the hooking pins 10, 10 ′ and the upper face S ′, S of the beams 3 and 4 is greater than the distance D2 between the hooking fins 8 and the upper face S ′ of the beams 3 usable as primary beams.
  • the distance D3 comprised between the latching lugs 10, 10 ′ and the base 11a, 11a′ of the support bosses 11, 11 ′ is substantially equal to the distance D2 comprised between the latching fins 8 and the upper face S ′ of beams 3 usable as primary beams.
  • the boss 11 ′ or 11 of the end flange 5 ′ or 5 of the secondary beams specific 4, or beams 3 used as secondary beams 4 is placed in abutment on a metal part of the upper surface S ′ of the primary beams 3, in the assembly position of said beams.
  • the fixed column 16 has at its upper part, two superimposed horizontal plates 19, 20 distant from each other.
  • the upper plate 19 is intended to support the formwork skin, while the lower plate 20 constitutes a stop opposing the accidental lifting of the primary beams 3 hung on the drooping head, when the movable element of the latter is located in the high position.
  • the column 16 has, in the lower part, two longitudinal columns 21 diametrically opposite and on the top of which rests the cam 18 when the movable support 17 is immobilized in the high position.
  • the mobile support 17 comprises, on the one hand, near its lower end, a hooking plate 22 for hooking the ends 5 of primary beams 3 and, on the other hand, at its upper part, a console support 23 disposed above and at a distance from said attachment plate, this console constituting, for example, the top of said mobile support.
  • the attachment plate 22 has a rim 24 inclined outward and delimiting a peripheral groove 22a in the form of a quadrilateral, the degree of inclination of this rim being substantially the same as that of the lateral fins 8 of the beams 3.
  • the distance D4 which separates the rim 24 and the support surface of the support console 23, is substantially equal to the distance D3 comprised between the latching lugs 10 and the base 11a of the support bosses 11 of the primary beams 3.
  • the descending head cam 18 comprises a body 25 provided with a circular central opening 26 communicating with two lateral notches 27 diametrically opposite and dimensioned to allow the passage of the support and guide columns 21.
  • the cams present on their lower face, two planar surfaces 28 diametrically opposed, allowing their support on the top of the balusters 21 and helical sloping surfaces 29 connecting said planar surfaces 28 to the notches 27. Laterally, the cams have two diametrically opposed levers 30, allowing their maneuver.
  • the mobile support 17 is held in the high position by the cam 18 which rests on the top of the balusters 21, by means of its bearing surfaces 28.
  • the lowering of said movable support is obtained by turning the cam 18 over 90 degrees, so as to bring its notches 27 above the balusters 21 which serve which of said cam, during the fall of the latter and during its ascent in the locked position.
  • FIG. 30 shows the mile in place of a primary beam 3. This is first hooked, by means of the hooking lugs 10 of one of its end pieces 5, on the attachment plate 22 of the drooping head 2 of a forestay 1, then lifted in a horizontal position and hooked, by means of its opposite butt, to the drooping head of a second forestay arranged in alignment with the first. In this position (FIG. 28), the latching lugs 10 of the primary beam 3 are housed in the groove 22a of the latching plate 22, while its support boss 11 rests on the upper face of the console support 23. This double bond ensures stable and solid positioning of the primary beams on the falling heads of the props.
  • the upper fixed plate 19 intended to support the formwork skin 33 provides protection for the underlying fixed plate 20 in the event of the forestay falling, this result having its importance since a deformation of the plate fixed abutment, even reduced, risks making said stay useless.
  • each end of the beams primary 3 has, in its lower part, a chamfer 31 disposed behind and near the hooking spouts 10, and the inclination of which is reversed with respect to the inclination of the fins 8 and of the flanges 24.
  • the supporting structure is produced according to a frame composed of meshes or quadrangular modules (square or rectangular) whose angles are materialized by the drooping heads 2 of the struts 1 and comprising primary beams 3 hung on said drooping heads and secondary beams 4 hung on the sides of said primary beams.
  • a frame composed of meshes or quadrangular modules (square or rectangular) whose angles are materialized by the drooping heads 2 of the struts 1 and comprising primary beams 3 hung on said drooping heads and secondary beams 4 hung on the sides of said primary beams.
  • the surface of the frame does not exactly correspond to the surface of the slab to be produced.
  • the surface of the supporting frame shown does not cover the entire surface of the slab to be produced, which is delimited by the walls M of the construction, so that 'there remain surfaces or areas, respectively A1, A2, A3, not covered by said frame.
  • a modular bearing structure comprising, on the one hand, primary beams 3 hung on the heads 2 of props or shoring posts 1 arranged at the angles of the meshes or modules constituting the frame of said modular supporting structure, and, on the other hand, secondary beams 4 hung on the sides of the primary beams 3; there is then, above the area not covered by the frame of the support structure 3-4, a joist 32 resting on said primary beams and serving as support for the skin formwork 33.
  • the joists 32 may consist of pieces of wood with a lamellar structure of characteristics and section identical to those of the body of the secondary beams 4. According to a characteristic arrangement of the invention, their thickness e is identical to the distance d separating the horizontal planes PP and P′-P ′ in which the upper surface S of the secondary beams 4 and the upper surface S ′ of the primary beams 3 are respectively located.
  • the frame is divided into at least two parts T1, T2 separated by an interval I corresponding to the area A1 not covered by it, and these separate frame parts T1, T2 are connected by a joist 32 resting on the primary beams 3a disposed on the bank of said parts, this joist 32 surmounting said area A1 and serving as support for the formwork skin 33, for example made up of the usual way, by plywood panels have the desired thickness.
  • the plywood panels 33 are placed in abutment on the upper face S of the secondary beams 4 and on the upper face of the joists 32 which are therefore arranged in the same horizontal plane P-P.
  • a complementary supporting structure 3c is installed at the edge of the slab, at a distance and at the same height from the primary beams 3b constituting one of the edges of the frame T of the modular support system, and said complementary supporting structure 3c and said primary beams 3b are connected by means of joists 32 disposed above the surface A2 not covered by said frame and have the aforementioned characteristics.
  • the additional supporting structure 3c can advantageously be constituted by beams identical to the primary beams 3, hung on the drooping heads 21 of props 11 positioned on the edge of the slab.
  • the joists 32 are placed in abutment on the upper faces of the beams 3b and 3c, while the plywood panels constituting the formwork skin 33 are placed in abutment on the upper face of the secondary beams 4 and on the upper face of the joists 32 which are arranged in the same horizontal plane PP.
  • the mode of implementation of the modular shuttering system illustrated in Figure 9 differs from the process shown in Figures 6 to 8, only in that the surface A3 not covered by the frame of the supporting structure 2-3-4, n ' is not bounded by two parallel sides.
  • the additional supporting structure 3c installed on the edge of the slab is not parallel to the primary beams 3b constituting one of the edge of the main supporting structure, so that joists are used in this case. 32 of different lengths to connect said complementary supporting structure 3c to said primary beams 3b.
  • Modular load-bearing structures for slab formwork sometimes include a stabilization system in the lower part, consisting of spacers retaining the lower part of all the struts or only a certain number of them.
  • this stabilization in the lower part is carried out by means of 3d beams identical to the beams 3 used to constitute the primary beams of the modular shuttering system, and the struts 1 are arranged, in their lower part, for allow the attachment and locking of the ends of said beams.
  • the was 1 are equipped with two identical superimposed devices oriented perpendicularly.
  • Each of these devices comprises a hooking plate 34 and a double locking flange 35 disposed at a distance and above it.
  • This attachment plate and this double locking flange each comprise two opposite functional sides shaped and arranged identically, to allow the attachment and locking of two 3d stabilization beams arranged in the extension of one of the other.
  • Each attachment plate 34 is constituted by a simple plate having opposite raised edges or edges 36 and rigidly fixed, by welding or otherwise, around the forestay tube, these raised edges delimiting two opposite grooves 34a.
  • Each double locking flange 35 comprises two parallel cheeks 37 rigidly connected to the forestay tube by means of two superimposed spacer plates 38 fixed, by welding or otherwise, around of said tube.
  • the cheeks 37 have a greater length than that of the sides of the spacer plates 38 to which they are attached, so that they constitute the spaced branches 39 of two opposite forks.
  • These branches 39 have openings 40, 41 for the passage of a key 42 allowing the locking of the 3d beams on the double flange 35, by transverse keying.
  • the boss 11 of the end piece 5 of the beam is placed between the branches 39 and the key 42 is engaged through the transverse passage 12 of said boss.
  • a retaining bar 43 is disposed in front of the larger opening 40 of each fork 39-39, this bar being trapped inside the key 42 produced in the form of a flattened ring. In this way, the key cannot be separated from the branch provided with the retaining bar.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

Method for concrete floor shuttering, using a modular supporting system comprising: - Props (1) with projecting head (2); - primary beams (3) intended to be attached to the heads (2) of the props (1); - secondary beams (4) intended to be attached to the sides of the primary beams (3), these primary beams (3) and these secondary beams (4) being shaped in such a way that when the first ones (3) are attached to the heads (2) of the props (1) and the second ones (4) are attached to the side of the primary beams, the upper surfaces (S) of the said secondary beams (4) lie in a plane (P-P) located above and at a distance from the plane (P'-P') in which the upper surfaces (S') of the said primary beams (3) are placed, this method being characterised in that the shuttering skin (33) is rested on the upper faces (S) of the said secondary beams (4), so that a space (d) is created, below the said shuttering skin (33), between the planes (P-P P'P') in which the upper faces (S; S') of the secondary beams (4) and of the primary beams (3) respectively are arranged. <IMAGE>

Description

La présente invention concerne un système portent modulaire pour coffrage de dalles en béton, du genre comprenant principalement :

  • des étais ou poteaux d'étaiement, de préférence du type à tête tombante ;
  • des poutres primaires ou poutres porteuses comportant, latéralement, des gorges longitudinales, et destinées à s'accrocher sur les têtes des étais ou poteaux par l'intermédiaire de leurs abouts munis d'ergots d'accrochage ;
  • des poutres secondaires appelées à s'accrocher sur les côtés des poutres primaires par l'intermédiaire de leurs abouts pourvus d'ergots d'accrochage ;
  • et également, dans certains cas, des éléments de contreventement des étais.
The present invention relates to a modular carrier system for formwork of concrete slabs, of the type mainly comprising:
  • props or shoring posts, preferably of the drop head type;
  • primary beams or load-bearing beams comprising, laterally, longitudinal grooves, and intended to hang on the heads of the props or posts by means of their ends provided with hooking lugs;
  • secondary beams called to hang on the sides of the primary beams by means of their ends provided with hooking lugs;
  • and also, in some cases, bracing elements of the props.

L'invention concerne également les procédés et les coffrages faisant application d'un tel système portant, ces derniers comprenant notamment une peau coffrante constituée par des plaques ou panneaux de contreplaqué posées sur ledit système portant.The invention also relates to the methods and the formwork applying such a bearing system, the latter notably comprising a formwork skin constituted by plywood plates or panels placed on said bearing system.

Les systèmes de coffrage modulaire de ce genre ont généralement pour avantages de pouvoir être mis en place rapidement, avec une grande facilité, et de pouvoir être déposés, de façon toute aussi aisée et rapide. De plus, il est possible de démonter prématurément les poutres secondaires et primaires, après coulage de la dalle de béton et avant le séchage complet de celle-ci qui demeure simplement soutenue par les étais et les panneaux de coffrage restant en place.Modular formwork systems of this kind generally have the advantages of being able to be set up quickly, with great ease, and of being able to be laid down, just as easily and quickly. In addition, it is possible to dismantle the secondary and primary beams prematurely, after pouring the concrete slab and before the complete drying of the latter, which remains simply supported by the props and the shuttering panels remaining in place.

La mise en place de ces systèmes de coffrage modulaire s'effectue suivant une trame composée de mailles ou modules quadrangulaires (carrées ou rectangulaires) dont les dimensions correspondent à la longueur des poutres primaires et secondaires et dont les angles sont occupés par les sommets des étais ou poteaux d'étaiement.The installation of these modular formwork systems is carried out according to a frame composed of meshes or quadrangular modules (square or rectangular) whose dimensions correspond to the length of the primary and secondary beams and whose angles are occupied by the tops of the props or shoring posts.

On connait (GB-A-2.005.332) un coffrage pour planchers en béton comportant : - des étais à tête tombante ; - des poutres primaires destinées à s'accrocher sur les têtes des étais et comportant des ailettes longitudinales de soutien ; - des poutres secondaires également munies d'ailettes longitudinales de soutien et destinées à reposer sur les ailettes latérales des poutres primaires, ces poutres qui peuvent être identiques ou non étant conformées de manière que lorsque les poutres primaires sont accrochées sur les têtes des étais et les poutres secondaires sont positionnées sur les ailettes latérales des poutres primaires, d'une part, les surfaces supérieures des poutres secondaires se trouvent disposées au-dessus des surfaces supérieures des poutres primaires, tandis que, d'autre part, les surfaces supérieures des ailettes latérales des poutres secondaires se trouvent disposées au même niveau que les surfaces supérieures des poutres primaires. Selon ce mode d'exécution, les surfaces coffrantes constituées par des feuilles de contreplaqué ou par des coffres munis d'une bordure, sont placées en appui sur les ailettes latérales des poutres secondaires et sur la surface supérieure des poutres primaires et sont encastrées entre la partie supérieure des côtés desdites poutres secondaires.We know (GB-A-2.005.332) a formwork for concrete floors comprising: - props with drop head; - primary beams intended to hang on the heads of the props and comprising longitudinal support fins; - secondary beams also provided with longitudinal support fins and intended to rest on the lateral fins of the primary beams, these beams which may or may not be identical being shaped so that when the primary beams are hung on the heads of the stays and the secondary beams are positioned on the lateral fins of the primary beams, on the one hand, the upper surfaces of the secondary beams are arranged above the upper surfaces of the primary beams, while, on the other hand, the upper surfaces of the lateral fins secondary beams are arranged at the same level as the upper surfaces of the primary beams. According to this embodiment, the formwork surfaces formed by plywood sheets or by boxes provided with a border, are placed in abutment on the lateral fins of the secondary beams and on the upper surface of the primary beams and are embedded between the upper part of the sides of said secondary beams.

Un tel dispositif présente de très importants inconvénients tels que :

  • l'obligation de prévoir un dimensionnement extrênement précis des surfaces coffrantes et un positionnement très rigoureux des éléments de la structure portante, afin que lesdites surfaces coffrantes puissent être encastrées très exactement entre les poutres secondaires ;
  • l'impossibitité de réutiliser les surfaces coffrantes qui ont été prévues pour une trame déterminée, pour la réalisation d'un coffrage réalisé selon une trame différente ;
  • la nécessité de prévoir un long temps de séchage du béton avant de procéder au démontage de la structure portante, compte tenu du fait que la surface supérieure des poutres secondaires sert de surface coffrante ;
  • une solidité réduite en raison du fait que le poids du béton coulé repose sur les ailettes latérales des poutres secondaires lesquelles s'appuient sur les ailettes longitudinales des poutres primaires, ces ailettes pouvant se déformer ou se dessouder ; d'autre part, les poutres primaires sont uniquement accrochées sur une plaque des têtes des étais laquelle peut également se déformer ou se fissurer avant de casser.
Such a device has very significant drawbacks such as:
  • the obligation to provide for an extremely precise dimensioning of the formwork surfaces and a very rigorous positioning of the elements of the bearing structure, so that said formwork surfaces can be embedded very exactly between the secondary beams;
  • the impossibility of reusing the formwork surfaces which have been provided for a given frame, for the production of a formwork produced according to a different frame;
  • the need to provide a long drying time for the concrete before dismantling the bearing structure, taking into account the fact that the upper surface of the secondary beams serves as a formwork surface;
  • a reduced solidity due to the fact that the weight of the poured concrete rests on the lateral fins of the secondary beams which rest on the longitudinal fins of the primary beams, these fins being able to deform or unsolder; on the other hand, the primary beams are only hung on a plate of the heads of the props which can also deform or crack before breaking.

Lors de la mise en oeuvre des systèmes de coffrage modulaires, on rencontre le plus souvent un problème découlant du fait que la trame porteuse ne couvre pas exactement la surface de la dalle à réaliser, de sorte qu'il subsiste, entre un ou plusieurs bords de la trame porteuse et le ou les murs voisins de la construction, un espace dépourvu de toute structure porteuse.When implementing modular formwork systems, there is most often a problem arising from the fact that the supporting frame does not exactly cover the surface of the slab to be produced, so that it remains between one or more edges of the supporting frame and the wall or walls adjacent to the construction, a space devoid of any supporting structure.

Selon le dispositif décrit dans le document GB-A-2.005.332, on a cherché à pallier à cet inconvénient en utitisant un dispositif d'étaiement spécial et complémentaire comprenant des contre-fiches et des poutres de différents types, sur lequel sont fixées des plaques de coffrage découpées aux dimensions souhaitables, mais, outre le fait que la mise en place d'un dispositif d'étaiement complémentaire n'est pas toujours possible, le travail d'ajustement de ses différents composants qui est nécessaire n'est guère compatible avec la standardisation recherchée dans la mise en oeuvre des systèmes de coffrage modulaire. En outre, il est quasi impossible, avec un tel dispositif, de réaliser une surface coffrante présentant un côté oblique, par exemple pour couler une dalle de surface trapézoïdale.According to the device described in document GB-A-2,005,332, we have sought to overcome this drawback by using a special and complementary shoring device comprising struts and beams of different types, on which are fixed shuttering plates cut to the desired dimensions, but, in addition to the fact that the installation of an additional shoring device is not always possible, the work of adjustment of its various components which is necessary is hardly compatible with the standardization sought in the implementation of modular formwork systems. In furthermore, it is almost impossible, with such a device, to produce a formwork surface having an oblique side, for example for pouring a trapezoidal surface slab.

On a également proposé de pallier à l'inconvénient ci-dessus en équipant les poutres avec une rallonge (FR-A-2.475.099) ou en utitisant des poutres extensibles mais la complexité de tels dispositifs engendre de nombreux inconvénients tels que : prix de revient élevé, difficulté de montage et de démontage, accroissement du poids des poutres, augmentation du nombre de types de composants, etc.It has also been proposed to overcome the above drawback by equipping the beams with an extension (FR-A-2,475,099) or by using extendable beams, but the complexity of such devices generates numerous drawbacks such as: high cost, difficulty of assembly and disassembly, increase in the weight of the beams, increase in the number of types of components, etc.

Un premier objet de l'invention, est de remédier aux inconvénients susmentionnés.A first object of the invention is to remedy the aforementioned drawbacks.

Selon l'invention, cet objectif est atteint grâce à un système portant modulaire et à un procédé suivant lesquels les poutres primaires et les poutres secondaires sont conformées de manière que lorsque les premières se trouvent accrochées sur les têtes des étais et les secondes accrochées, par l'intermédiaire de leurs abouts d'accrochage, sur le côté des poutres primaires, les surfaces horizontales supérieures desdites poutres secondaires se trouvent disposées dans un plan situé à distance et au-dessus du plan dans lequel se trouvent placées les surfaces supérieures desdites poutres primaires, ce procédé étant remarquable par le fait que les peaux ou surfaces coffrantes sont placées en appui sur les faces supérieures desdites poutres secondaires, de sorte qu'un espace se trouve ménagé au-dessous desdites peaux ou surfaces coffrantes, entre les plans dans lesquels sont disposées les surfaces supérieures des poutres secondaires et des poutres primaires, respectivement.According to the invention, this objective is achieved thanks to a modular bearing system and to a process according to which the primary beams and the secondary beams are shaped so that when the former are hung on the heads of the props and the latter hung, by by means of their attachment ends, on the side of the primary beams, the upper horizontal surfaces of said secondary beams are arranged in a plane located at a distance and above the plane in which the upper surfaces of said primary beams are placed , this method being remarkable by the fact that the skins or formwork surfaces are placed in abutment on the upper faces of said secondary beams, so that a space is provided below said skins or formwork surfaces, between the planes in which are arranged the upper surfaces of the secondary beams and the primary beams, res pectively.

Cet agencement facilite et simplifie grandement l'ajustement de la surface coffrante à la surface de la dalle à réaliser, lorsque la trame de la structure portante ne couvre pas exactement la surface de la dalle.This arrangement greatly facilitates and simplifies the adjustment of the formwork surface to the surface of the slab to be produced, when the frame of the structure load-bearing does not exactly cover the surface of the slab.

En effet, selon les procédés de l'invention, cet ajustement peut être obtenu :

  • soit en divisant la trame en au moins deux parties séparées par l'espace qui ne peut être couvert par ladite trame, et en reliant ces parties de trame séparées par un solivage reposant sur les poutres primaires disposées en rive desdites parties, et servant de support de peau coffrante ;
  • soit en reliant les poutres primaires constituant l'une des rives de la trame à un support étayé placé en rive de dalle, au moyen d'un solivage reposant sur lesdites poutres primaires, et servant de support de peau coffrante.
Indeed, according to the methods of the invention, this adjustment can be obtained:
  • either by dividing the frame into at least two parts separated by the space which cannot be covered by said frame, and by connecting these frame parts separated by a joist resting on the primary beams arranged on the bank of said parts, and serving as a support formwork skin;
  • either by connecting the primary beams constituting one of the edges of the frame to a supported support placed on the edge of the slab, by means of a joist resting on said primary beams, and serving as support for formwork skin.

Suivant une autre disposition caractéristique très importante du système portant selon l'invention, les abouts d'accrochage des poutres comportent, au-dessus et à distance de leur(s) ergot(s) d'accrochage, un bossage présentant une surface inférieure d'appui.According to another very important characteristic arrangement of the bearing system according to the invention, the attachment ends of the beams comprise, above and at a distance from their attachment lug (s), a boss having a lower surface d 'support.

Grâce à ce bossage :

  • les poutres primaires pouvant être placées en double appui sur les têtes des étais lesquelles sont en outre conformées, selon une autre disposition caractéristique de l'invention, pour empêcher tout soulèvement intempestif desdites poutres ;
  • les poutres secondaires peuvent être placées en double appui sur les poutres primaires.
Thanks to this boss:
  • the primary beams being able to be placed in double support on the heads of the props which are further shaped, according to another characteristic arrangement of the invention, to prevent any untimely lifting of said beams;
  • the secondary beams can be placed in double support on the primary beams.

On obtient ainsi des structures portantes plus stables et plus solides et une meilleure sécurité dans la liaison des composants de ces structures.This produces more stable and stronger load-bearing structures and better security in the connection of the components of these structures.

Un autre inconvénient des systèmes portants modulaires de coffrage connus, réside dans le fait que :

  • soit, ils ne comportent aucun système de contreventement et, dans ce cas, les étais sont souvent mal positionnés ou plus ou moins d'aplomb, ce qui confère une instabilité dangereuse à la structure portante et/ou occasionne des portes de temps liées au re-positionnement desdits étais ;
  • soit, ils comportent un système de contreventement, mais, dans ce cas, les entretoises métalliques nécessaires pour assurer une liaison rigide et un écartement constant entre au moins certains des étais en vue d'assurer une stabilisation dudit système en partie basse, sont agencées pour remplir cette unique fonction et ne peuvent être utilisées à d'autres fins.
Another drawback of known modular formwork bearing systems is that:
  • either, they do not have any bracing system and, in this case, the props are often poorly positioned or more or less plumb, which gives dangerous instability to the bearing structure and / or causes time gates related to the re-positioning of said struts;
  • either, they comprise a bracing system, but, in this case, the metal spacers necessary to ensure a rigid connection and a constant spacing between at least some of the props in order to ensure stabilization of said system in the lower part, are arranged to perform this unique function and may not be used for any other purpose.

Selon l'invention, ces entretoises métalliques sont constituées par des poutres primaires et les étais sont agencés, dans leur partie inférieure, pour permettre l'accrochage et le verrouillage des abouts desdites poutres primaires.According to the invention, these metal spacers are constituted by primary beams and the props are arranged, in their lower part, to allow the attachment and locking of the ends of said primary beams.

Cette disposition caractéristique, permet de réduire le nombre des types de composants du système portant modulaire pour coffrage.This characteristic arrangement makes it possible to reduce the number of types of components of the modular bearing system for formwork.

Les buts, caractéristiques et avantages ci-dessus, et d'autres encore, ressortiront mieux de la description qui suit et des dessins annexés dans lesquels :The aims, characteristics and advantages above, and others still, will emerge more clearly from the description which follows and from the appended drawings in which:

La figure 1 est une vue de face, à caractère sommaire, illustrant le système portant modulaire pour coffrage de dalles en béton, selon l'invention.Figure 1 is a front view, in summary, illustrating the modular bearing system for formwork of concrete slabs, according to the invention.

La figure 2 est une vue en coupe suivant la ligne 2-2 de la figure 1.Figure 2 is a sectional view along line 2-2 of Figure 1.

La figure 3 est une vue en plan de ce système portant modulaire, illustrant un premier exemple de mise en oeuvre du procédé d'ajustement permettent le rattrapage de la différence de surface existant entre la dalle à réaliser et ta trame de la structure porteuse du coffrage.Figure 3 is a plan view of this modular bearing system, illustrating a first example of implementation of the adjustment method allow the catching up of the difference in surface area existing between the slab to be produced and the frame of the supporting structure of the formwork .

La figure 4 est une vue en coupe et 4 plus grande échelle selon la ligne 4-4 de la figure 3.Figure 4 is a sectional view and 4 on a larger scale along line 4-4 of Figure 3.

La figure 5 est une vue en coupe et à plus grande échelle suivant la ligne 5-5 de la figure 3.FIG. 5 is a sectional view on a larger scale along line 5-5 of FIG. 3.

La figure 6 est une vue en plan du système portant modulaire selon l'invention, illustrant un deuxième exemple de aise en oeuvre du procédé d'ajustement permettant le rattrapage de la différence de surface existant entre la dalle à réaliser et la trame de la structure porteuse du coffrage.FIG. 6 is a plan view of the modular bearing system according to the invention, illustrating a second example of implementation of the adjustment method allowing the difference in surface area existing between the slab to be produced and the frame of the structure to be made up formwork carrier.

La figure 7 est une vue en coupe et à plus grande échelle suivant la ligne 7-7 de la figure 6.FIG. 7 is a sectional view on a larger scale along line 7-7 of FIG. 6.

La figure 8 est une vue en coupe et à plus grande échelle suivant la ligne 8-8 de la figure 6.FIG. 8 is a sectional view on a larger scale on line 8-8 of FIG. 6.

La figure 9 est une vue en plan du système portant modulaire selon l'invention, illustrant un troisième exemple du procédé d'ajustement permettant le rattrapage de la différence de conformation existant entre la dalle à réaliser et la trame de la structure porteuse.FIG. 9 is a plan view of the modular bearing system according to the invention, illustrating a third example of the adjustment method allowing the difference in conformation existing between the slab to be produced and the frame of the supporting structure to be made up.

La figure 10 est une vue de face, avec coupes partielles, d'une poutre exécutée selon l'invention, principalement en vue d'une utitisation comme poutre primaire, mais qui peut aussi être employée comme poutre secondaire et/ou comme entretoise de stabilitation.Figure 10 is a front view, with partial sections, of a beam executed according to the invention, mainly for use as a primary beam, but which can also be used as a secondary beam and / or as a stabilization spacer .

La figure 11 est une vue de dessus de cette poutre.Figure 11 is a top view of this beam.

La figure 12 est une vue à plus grande échelle et en coupe transversale selon la ligne 12-12 de la figure 10.FIG. 12 is a view on a larger scale and in cross section along line 12-12 of FIG. 10.

La figure 13 est une vue en coupe axiale d'une extrémité de poutre primaire équipée de son about d'accrochage.Figure 13 is an axial sectional view of an end of the primary beam equipped with its attachment end.

La figure 14 est une vue de face d'un about de poutre primaire.Figure 14 is a front view of a primary beam butt.

La figure 15 est une vue en plan et en demi-coupe suivant la ligne 15-15 de la figure 14.FIG. 15 is a plan view and in half-section on line 15-15 of FIG. 14.

La figure 16 est une vue arrière d'un about de poutre primaire.Figure 16 is a rear view of a primary beam butt.

La figure 17 est une vue en coupe suivant la ligne 17-17 de la figure 16.Figure 17 is a sectional view along line 17-17 of Figure 16.

La figure 18 est une vue de face, avec coupe partielle, d'une portion extrême de poutre secondaire qui, dans ce cas, est différente des poutres primaires.Figure 18 is a front view, partly in section, of an end portion of the secondary beam which, in this case, is different from the primary beams.

La figure 19 est une vue de face d'un about de poutre secondaire.Figure 19 is a front view of a secondary beam butt.

La figure 20 est une vue en coupe selon la ligne 20-20 de la figure 19.Figure 20 is a sectional view along line 20-20 of Figure 19.

La figure 21 est une vue arrière de la figure 19.Figure 21 is a rear view of Figure 19.

La figure 22 est une vue de dessus de la figure 19.Figure 22 is a top view of Figure 19.

La figure 23 est une vue en élévation avec coupe axiale partielle, de la portion supérieure d'un étai équipé d'une tête tombante.Figure 23 is an elevational view with partial axial section, of the upper portion of a forestay equipped with a drooping head.

Les figures 24 et 25 sont des vues en plan et en coupe, respectivement, suivant les lignes 24-24 et 25-25 de la figure 23.Figures 24 and 25 are plan and sectional views, respectively, along lines 24-24 and 25-25 of Figure 23.

La figure 26 est une vue en plan et à plus grande échelle, de la came de décintrage permettant la descente de tête tombante.FIG. 26 is a plan view, on a larger scale, of the descending cam allowing the descent of the drooping head.

La figure 27 est une vue en coupe suivant la ligne 27-27 de la figure 26.Figure 27 is a sectional view along line 27-27 of Figure 26.

La figure 28 est une vue en élévation avec coupe partielle montrant l'accrochage de deux poutres primaires sur une tête tombante représentée en position haute de fonctionnement.Figure 28 is an elevational view in partial section showing the attachment of two primary beams on a drop head shown in the high operating position.

La figure 29 est une vue analogue à la figure 28 et représentant le décintrage obtenu par la descente de la tête tombante montrée en position basse.FIG. 29 is a view similar to FIG. 28 and showing the decoupling obtained by the descent of the drooping head shown in the low position.

La figure 30 illustre la dynamique de mise en place d'une poutre primaire.Figure 30 illustrates the dynamics of setting up a primary beam.

La figure 31 est une vue de détail de la figure 30.FIG. 31 is a detailed view of FIG. 30.

La figure 32 est une vue en élévation illustrant l'agencement de la partie basse des étais pour permettre la fixation des poutres utitisées comme éléments stabitisateurs.Figure 32 is an elevational view illustrating the arrangement of the lower part of the props to allow the fixing of the beams used as stabilizing elements.

Les figures 33 et 34 sont des vues en plan et en coupe respectivement selon les lignes 33-33 et 34-34 de la figure 32.Figures 33 and 34 are plan and sectional views respectively along lines 33-33 and 34-34 of Figure 32.

La figure 35 est une vue en perspective d'une cellule de trame de structure porteuse réalisée selon l'invention.FIG. 35 is a perspective view of a frame cell of a supporting structure produced according to the invention.

On se reporte auxdits dessins pour décrire des exemples avantageux, quoique nullement limitatifs, d'exécution du système portant modulaire ou structure porteuse modulaire pour coffrage de planchers ou dalles en béton, et de mise en oeuvre des procédés faisant application dudit système.Reference is made to said drawings to describe advantageous examples, although in no way limitative, of the execution of the modular bearing system or modular supporting structure for formwork of concrete floors or slabs, and of the implementation of methods applying said system.

Ce système comprend, de manière connue en soi : - des étais ou poteaux d'étaiement 1, dont le sommet est, de préférence, équipé d'une tête tombante 2 ; - des poutres primaires ou poutres porteuses 3 destinées à s'accrocher sur les têtes de ces étais ou poteaux d'étaiement ; - des poutres secondaires 4 appelées à s'accrocher sur lesdites poutres primaires.This system comprises, in a manner known per se: - props or shoring posts 1, the top of which is preferably equipped with a drooping head 2; - primary beams or supporting beams 3 intended to hang on the heads of these props or shoring posts; - Secondary beams 4 called to hang on said primary beams.

Les poutres primaires 3 et les poutres secondaires 4 sont conformées ou agencées de manière que lorsque les premières se trouvent accrochées sur les têtes 2 des étais 1 et les secondes accrochées, par l'intermédiaire de leurs abouts d'accrochage 5, sur le côté des poutres primaires 3, les surfaces horizontales supérieures S desdites poutres secondaires 4 se trouvent disposées dans un plan P-P situé à distance et au-dessus du plan P′-P′ dans lequel se trouvent placées les surfaces supérieures S′ desdites poutres primaires 3. Selon l'invention, la peau coffrante ou surface coffrante 33 qui peut être constituée par une feuille de contreplaqué présentant l'épaisseur souhaitable, est posée sur la face supérieure S des poutres secondaires 4, de sorte qu'un espace d se trouve ménagé, au-dessous de ladite peau coffrante 33, entre les plans P-P et P′-P′ dans lesquels sont respectivement disposés les faces supérieures S et S′ des poutres secondaires 4 et primaires 3.The primary beams 3 and the secondary beams 4 are shaped or arranged so that when the first are hung on the heads 2 of the props 1 and the second hung, by means of their hooking ends 5, on the side of the primary beams 3, the upper horizontal surfaces S of said secondary beams 4 are arranged in a plane PP located at a distance and above the plane P′-P ′ in which the upper surfaces S ′ of said primary beams are placed 3. According to the invention, the formwork skin or formwork surface 33 which may consist of a sheet of plywood having the desired thickness, is placed on the upper face S of the secondary beams 4, so that a space d is formed, below said formwork skin 33, between the planes PP and P′-P ′ in which the upper faces S are respectively arranged and S ′ of secondary 4 and primary 3 beams.

Les poutres 3 et 4 peuvent être avantageusement constituées par des profilés métalliques tels que profilés d'aluminium comportant, de manière connue en soi, une gorge supérieure dans laquelle est logée une fourrure 6 constituée par un tasseau de bois et une gorge inférieure 7 permettant notamment l'accrochage de différents appareils ou dispositifs nécessaires à la construction.The beams 3 and 4 may advantageously be constituted by metal profiles such as aluminum profiles comprising, in a manner known per se, an upper groove in which is housed a fur 6 constituted by a wooden batten and a lower groove 7 allowing in particular the attachment of various devices or devices necessary for construction.

Ces poutres 3 comportent, dans leur partie inférieure et sur chacun de tous côtés, une ailette 8 inclinée vers l'extérieur et en direction du haut, cette ailette s'étendant sur toute la longueur desdites poutres et délimitant une gouttière ou gorge longitudinale 9.These beams 3 comprise, in their lower part and on each from all sides, a fin 8 inclined towards the outside and in the direction of the top, this fin extending over the entire length of said beams and delimiting a gutter or longitudinal groove 9.

A chacune de leurs extrémités, les poutres 3 sont équipées d'un about d'accrochage 5 constitué par un flasque métallique rigidement fixé, par exemple par vissage, sur ladite extrémité. Ce flasque comporte, extérieurement :

  • dans sa partie inférieure, au moins un ergot d'accrochage 10 ;
  • dans se partie supérieure, un bossage d'appui 11 à sommet arrondi comportant une large surface inférieure d'appui 11a et dans lequel est, de préférence, ménagé un passage transversal 12.
At each of their ends, the beams 3 are equipped with an attachment end 5 constituted by a metal flange rigidly fixed, for example by screwing, on said end. This flange includes, externally:
  • in its lower part, at least one latching pin 10;
  • in its upper part, a support boss 11 with a rounded top having a large lower support surface 11a and in which is preferably formed a transverse passage 12.

Lorsqu'une poutre 3 utilisée comme poutre secondaire 4 est accrochée sur une poutre primaire 3, son ergot d'accrochage 10 est logé dans la gorge 9 de la poutre primaire, tandis que son bossage 11 repose sur la face supérieure S′ de ladite poutre primaire (figure 1). L'ergot 10 assure l'accrochage tandis que le bossage 11 permet l'application des forces supportées par la poutre secondaire sur la partie la plus robuste de la poutre primaire. On obtient ainsi un assemblage rapide, stable, solide et sûr des poutres primaires et des poutres secondaires.When a beam 3 used as a secondary beam 4 is hung on a primary beam 3, its latching lug 10 is housed in the groove 9 of the primary beam, while its boss 11 rests on the upper face S ′ of said beam primary (figure 1). The lug 10 ensures the attachment while the boss 11 allows the application of the forces supported by the secondary beam on the most robust part of the primary beam. This provides a quick, stable, solid and safe assembly of the primary beams and the secondary beams.

Selon le mode d'exécution illustré, les abouts 5 de poutre primaire 3, comportent deux ergots d'accrochage 10 disposés symétriquement de part et d'autre de l'axe vertical dudit about.According to the illustrated embodiment, the ends 5 of primary beam 3, comprise two latching lugs 10 arranged symmetrically on either side of the vertical axis of said abutment.

D'autre part chaque flasque d'about 5, comporte, sur son côté arrière ou côté interne, au moins une petite console 13 et, par exemple, deux petites consoles 13 disposées symétriquement, de part et d'autre de son axe vertical. Ces petites consoles 13 sont placées au-dessous et au contact d'une cloison horizontale 14 dont sont pourvus les profilés constituant les poutres 3 dans leur demi-partie inférieure, de sorte qu'elles supportent l'essentiel des forces appliquées sur les poutres primaires, en cours d'utilisation de la structure porteuse.On the other hand each end flange 5, comprises, on its rear side or internal side, at least one small console 13 and, for example, two small consoles 13 arranged symmetrically, on either side of its vertical axis. These small brackets 13 are placed below and in contact with a horizontal partition 14 with which the profiles constituting the beams 3 are provided in their lower half-part, so that they support most of the forces applied to the primary beams , during use of the supporting structure.

La possibitité d'utiliser des poutres rigoureusement identiques pour remplir la fonction de poutres primaires porteuses 3 accrochées sur les têtes 2 des étais 1, et également la fonction de poutres secondaires 4 accrochées sur les côtés des poutres primaires et servent de supports à la peau coffrante, permet d'utiliser un seul type de poutre pour réaliser le système portent modulaire selon l'invention.The possibility of using rigorously identical beams to fulfill the function of primary load-bearing beams 3 hung on the heads 2 of the props 1, and also the function of secondary beams 4 hung on the sides of the primary beams and serve as supports for the formwork skin , allows the use of a single type of beam to make the modular door system according to the invention.

Toutefois, notamment pour répondre à des impératifs économiques, les poutres secondaires 4 peuvent être différentes des poutres primaires 3. Dans ce cas, elles peuvent être avantageusement constituées par des pièces de bois à structure lamellaire ou par des profités en aluminium présentent une section simple, aux extrémités desquelles sont fixés, par exemple par vissage, des abouts d'accrochage 5′. Ces derniers sont constitués par des flasques comportant, de manière semblable aux flasques d'about 5, un ergot d'accrochage 10′ et un bossage d'appui 11′, présentant une surface inférieure d'appui 11a′. Ils comportent également, à leur base, une semelle de soutien 15 orientée vers l'arrière et fixée, par exemple par vissage, contre la face inférieure de l'extrémité de la poutre proprement dite, notamment lorsque cette dernière est constituée par un composite lamellaire. De la sorte, cette semelle de soutien métallique 15 supporte l'essentiel des forces appliquées sur les poutres secondaires, lors de l'utitisation de la structure portante.However, in particular to respond to economic imperatives, the secondary beams 4 may be different from the primary beams 3. In this case, they may advantageously be constituted by pieces of wood with a lamellar structure or by aluminum profiters having a simple section, at the ends of which are fixed, by example by screwing, 5 ′ hanging ends. The latter consist of flanges comprising, in a manner similar to the end flanges 5, a latching lug 10 ′ and a support boss 11 ′, having a lower support surface 11a ′. They also comprise, at their base, a support sole 15 oriented towards the rear and fixed, for example by screwing, against the underside of the end of the beam proper, in particular when the latter is formed by a lamellar composite. . In this way, this metal support sole 15 supports most of the forces applied to the secondary beams, during the use of the bearing structure.

La distance D1 comprise entre les ergots d'accrochage 10, 10′ et la face supérieure S′, S des poutres 3 et 4, est supérieure à la distance D2 comprise entre les ailettes d'accrochage 8 et la face supérieure S′ des poutres 3 utitisables comme poutres primaires.The distance D1 between the hooking pins 10, 10 ′ and the upper face S ′, S of the beams 3 and 4 is greater than the distance D2 between the hooking fins 8 and the upper face S ′ of the beams 3 usable as primary beams.

Dans ces conditions, lorsqu'une poutre 3 utitisée comme poutre secondaire 4, ou lorsqu'une poutre secondaire spécifique 4 se trouve accrochée, par l'intermédiaire de l'un de ses flasques d'about 5, 5′ sur l'une des ailes d'accrochage 8 d'une poutre primaire 3, sa lace supérieure S se trouve disposée dans un plan P-P situé à distance et au-dessus du plan P′-P′ dans lequel se trouve placée la face supérieure S′ de ladite poutre primaire 3.Under these conditions, when a beam 3 used as a secondary beam 4, or when a specific secondary beam 4 is hooked, by means of one of its end flanges 5, 5 ′ on one of the attachment wings 8 of a primary beam 3, its upper lace S is arranged in a plane PP located at a distance and above the plane P′-P ′ in which the upper face S ′ of said beam is placed primary 3.

D'autre part, la distance D3 comprise entre les ergots d'accrochage 10, 10′ et la base 11a, 11a′des bossages d'appui 11, 11′, est sensiblement égale à la distance D2 comprise entre les ailettes d'accrochage 8 et la face supérieure S′ des poutres 3 utilisables comme poutres primaires. De la sorte, le bossage 11′ ou 11 du flasque d'about 5′ ou 5 des poutres secondaires spécifiques 4, ou des poutres 3 utilisées comme poutres secondaires 4, se trouve placé en appui sur une partie métallique de la surface supérieure S′ des poutres primaires 3, dans la position d'assemblage desdites poutres.On the other hand, the distance D3 comprised between the latching lugs 10, 10 ′ and the base 11a, 11a′ of the support bosses 11, 11 ′, is substantially equal to the distance D2 comprised between the latching fins 8 and the upper face S ′ of beams 3 usable as primary beams. In this way, the boss 11 ′ or 11 of the end flange 5 ′ or 5 of the secondary beams specific 4, or beams 3 used as secondary beams 4, is placed in abutment on a metal part of the upper surface S ′ of the primary beams 3, in the assembly position of said beams.

La tête tombante 2 équipant le sommet des étais 1 comprend :

  • une colonne fixe 16 par exemple rigidement fixée à la partie supérieure d'un étai classique 1 ;
  • un support 17 comportant un corps tubulaire et monté autour de cette colonne fixe 16 avec une aptitude de mouvement axial le long de celle-ci.
  • une came de décintrage 18, montée avec une aptitude de rotation autour de la colonne fixe 16 et au-dessous du support mobile 17, cette came de décintrage pouvant coulisser axialement, le long de la partie inférieure de ladite colonne.
The drooping head 2 fitted to the top of the props 1 comprises:
  • a fixed column 16 for example rigidly fixed to the upper part of a conventional forestay 1;
  • a support 17 comprising a tubular body and mounted around this fixed column 16 with an aptitude for axial movement along the latter.
  • a descending cam 18, mounted with an aptitude for rotation around the fixed column 16 and below the movable support 17, this descending cam being able to slide axially, along the lower part of said column.

La colonne fixe 16 comporte à sa partie supérieure, deux plaques horizontales superposées 19, 20 distantes l'une de l'autre. La plaque supérieure 19 est destinée à l'appui de la peau coffrante, tandis que la plaque inférieure 20 constitue une butée s'opposant au soulèvement accidentel des poutres primaires 3 accrochées sur la tête tombante, lorsque l'élément mobile de cette dernière se trouve en position haute.The fixed column 16 has at its upper part, two superimposed horizontal plates 19, 20 distant from each other. The upper plate 19 is intended to support the formwork skin, while the lower plate 20 constitutes a stop opposing the accidental lifting of the primary beams 3 hung on the drooping head, when the movable element of the latter is located in the high position.

La colonne 16 présente, dans se partie inférieure, deux colonnettes longitudinales 21 diamétralement opposées et sur le sommet desquelles repose la came de décintrement 18 lorsque le support mobile 17 se trouve immobilisé en position haute.The column 16 has, in the lower part, two longitudinal columns 21 diametrically opposite and on the top of which rests the cam 18 when the movable support 17 is immobilized in the high position.

Le support mobile 17 comprend, d'une part, à proximité de son extrémité inférieure, une platine d'accrochage 22 pour l'accrochage des abouts 5 de poutres primaires 3 et, d'autre part, à sa partie supérieure, une console de soutien 23 disposée au-dessus et à distance de ladite platine d'accrochage, cette console constituant, par exemple, le sommet dudit support mobile. La platine d'accrochage 22 comporte un rebord 24 incliné vers l'extérieur et délimitant une gorge périphérique 22a en forme de quadrilatère, le degré d'inclinaison de ce rebord étant sensiblement le même que celui des ailettes latérales 8 des poutres 3. D'autre part, la distance D4 qui sépare le rebord 24 et la surface d'appui de la console de soutien 23, est sensiblement égale à la distance D3 comprise entre les ergots d'accrochage 10 et la base 11a des bossages d'appui 11 des poutres primaires 3.The mobile support 17 comprises, on the one hand, near its lower end, a hooking plate 22 for hooking the ends 5 of primary beams 3 and, on the other hand, at its upper part, a console support 23 disposed above and at a distance from said attachment plate, this console constituting, for example, the top of said mobile support. The attachment plate 22 has a rim 24 inclined outward and delimiting a peripheral groove 22a in the form of a quadrilateral, the degree of inclination of this rim being substantially the same as that of the lateral fins 8 of the beams 3. D ' on the other hand, the distance D4 which separates the rim 24 and the support surface of the support console 23, is substantially equal to the distance D3 comprised between the latching lugs 10 and the base 11a of the support bosses 11 of the primary beams 3.

La came de décintrage 18 des têtes tombantes comprend un corps 25 pourvu d'une ouverture centrale circulaire 26 communiquant avec deux échancrures latérales 27 diamétralement opposées et dimensionnées pour permettre le passage des colonnettes d'appui et de guidage 21. Les cames de décintrage présentent sur leur face inférieure, deux surfaces planes 28 diamétralement opposées, permettant leur appui sur le sommet des colonnettes 21 et des surfaces pentées hélicoïdales 29 reliant lesdites surfaces planes 28 aux échancrures 27. Latéralement, les cames de décintrage comportent deux manettes 30 diamétralement opposées, permettant leur manoeuvre.The descending head cam 18 comprises a body 25 provided with a circular central opening 26 communicating with two lateral notches 27 diametrically opposite and dimensioned to allow the passage of the support and guide columns 21. The cams present on their lower face, two planar surfaces 28 diametrically opposed, allowing their support on the top of the balusters 21 and helical sloping surfaces 29 connecting said planar surfaces 28 to the notches 27. Laterally, the cams have two diametrically opposed levers 30, allowing their maneuver.

On conçoit bien le fonctionnement de ces têtes tombantes qui ne trouvent en position haute lors de la mise en place des composants horizontaux de la structure portante (figure 28) ainsi que pendant l'opération de coulage de la dalle et durant un premier temps de séchage de celle-ci, et qui sont descendues en position basse (figure 29), par exemple lorsqu'on veut procéder au démontage prématuré desdits composants horizontaux avant le complet séchage de la dalle D coulée, afin de pouvoir les réutiliser immédiatement.It is easy to understand the operation of these drooping heads which are not in the high position during the positioning of the horizontal components of the supporting structure (FIG. 28) as well as during the operation of pouring the slab and during a first drying time. thereof, and which are lowered to the low position (Figure 29), for example when one wants to proceed with the premature dismantling of said horizontal components before the complete drying of the slab D poured, so that they can be reused immediately.

Le support mobile 17 se trouve maintenu en position haute par la came de décintrement 18 qui repose sur le sommet des colonnettes 21, par l'intermédiaire de ses surfaces d'appui 28. On obtient la descente dudit support mobile en tournant la came de décintrement 18 sur 90 degrés, de manière à amener ses échancrures 27 au-dessus des colonnettes 21 qui servent de qui des à ladite came, lors de la chute de cette dernière et lors de sa remontée en position de blocage.The mobile support 17 is held in the high position by the cam 18 which rests on the top of the balusters 21, by means of its bearing surfaces 28. The lowering of said movable support is obtained by turning the cam 18 over 90 degrees, so as to bring its notches 27 above the balusters 21 which serve which of said cam, during the fall of the latter and during its ascent in the locked position.

On à représenté, à la figure 30, la mile en place d'une poutre primaire 3. Cette-ci est d'abord accrochée, par l'intermédiaire des ergots d'accrochage 10 de l'un de ses abouts 5, sur la platine d'accrochage 22 de la tête tombante 2 d'un étai 1, puis soulevée en position horizontale et accrochée, par l'intermédiaire de son about opposé, sur la tête tombante d'un deuxième étai disposé dans l'alignement du premier. Dans cette position (figure 28), les ergots d'accrochage 10 de la poutre primaire 3 se trouvent logés dans la gorge 22a de la platine d'accrochage 22, tandis que son bossage d'appui 11 repose sur la face supérieure de la console de soutien 23. Cette double liaison assure un positionnement stable et solide des poutres primaires sur les têtes tombantes des étais.FIG. 30 shows the mile in place of a primary beam 3. This is first hooked, by means of the hooking lugs 10 of one of its end pieces 5, on the attachment plate 22 of the drooping head 2 of a forestay 1, then lifted in a horizontal position and hooked, by means of its opposite butt, to the drooping head of a second forestay arranged in alignment with the first. In this position (FIG. 28), the latching lugs 10 of the primary beam 3 are housed in the groove 22a of the latching plate 22, while its support boss 11 rests on the upper face of the console support 23. This double bond ensures stable and solid positioning of the primary beams on the falling heads of the props.

On observe que lorsque la poutre 3 a été positionnée, elle ne peut se décrocher accidentellement en raison d'une force appliquée vers le haut, par suite du fait que la plaque fixe de butée 20 de la tête tombante au-dessous de laquelle se trouve engagé le bossage 11 de l'about 5 de ladite poutre, empêche tout soulèvement de cette dernière.It is observed that when the beam 3 has been positioned, it cannot accidentally unhook due to an applied force upwards, owing to the fact that the fixed abutment plate 20 of the drooping head below which is located engaged the boss 11 of the end 5 of said beam, prevents any lifting of the latter.

On observe que la plaque fixe supérieure 19 destinée à l'appui de la peau coffrante 33, assure la protection de la plaque fixe sous-jacente 20 en cas de chute de l'étai, ce résultat ayant son importance car une déformation de la plaque fixe de butée, mêne réduite, risque de rendre ledit étai inutitisable.It is observed that the upper fixed plate 19 intended to support the formwork skin 33, provides protection for the underlying fixed plate 20 in the event of the forestay falling, this result having its importance since a deformation of the plate fixed abutment, even reduced, risks making said stay useless.

D'autre part, chaque extrémité des poutres primaires 3 présente, dans sa partie inférieure, un chanfrein 31 disposé en arrière et à proximité des becs d'accrochage 10, et dont l'inclinaison est inversée par rapport à l'inclinaison des ailettes 8 et des rebords 24.On the other hand, each end of the beams primary 3 has, in its lower part, a chamfer 31 disposed behind and near the hooking spouts 10, and the inclination of which is reversed with respect to the inclination of the fins 8 and of the flanges 24.

On a illustré, aux figures 3 à 9, des exemples de mise en oeuvre du système portent modulaire ou structure porteuse modulaire selon l'invention.Illustrated in Figures 3 to 9, examples of implementation of the modular support system or modular support structure according to the invention.

De manière connue en soi, la structure porteuse est réalisée suivant une trame composée de mailles ou modules quadrangulaires (carrés ou rectangulaires) dont les angles sont matérialisés par les têtes tombantes 2 des étais 1 et comprenant des poutres primaires 3 accrochées sur lesdites têtes tombantes et des poutres secondaires 4 accrochées sur les côtés desdites poutres primaires. Toutefois, il arrive fréquemment que la surface de la trame ne correspond pas exactement à la surface de la dalle à réaliser.In a manner known per se, the supporting structure is produced according to a frame composed of meshes or quadrangular modules (square or rectangular) whose angles are materialized by the drooping heads 2 of the struts 1 and comprising primary beams 3 hung on said drooping heads and secondary beams 4 hung on the sides of said primary beams. However, it often happens that the surface of the frame does not exactly correspond to the surface of the slab to be produced.

Comme on le voit sur les figures 3, 6 et 9, la surface de la trame portante représentée, ne couvre pas la totalité de la surface de la dalle à réaliser, laquelle, est délimitée par les murs M de la construction, de sorte qu'il subsiste des surfaces ou aires, respectivement A1, A2, A3, non couvertes par ladite trame.As can be seen in FIGS. 3, 6 and 9, the surface of the supporting frame shown does not cover the entire surface of the slab to be produced, which is delimited by the walls M of the construction, so that 'there remain surfaces or areas, respectively A1, A2, A3, not covered by said frame.

Selon le procédé de l'invention, on met d'abord en place une structure portante modulaire comprenant, d'une part, des poutres primaires 3 accrochées sur les têtes 2 d'étais ou poteaux d'étaiement 1 disposés aux angles des mailles ou modules constituant la trame de ladite structure portante modulaire, et, d'autre part, des poutres secondaires 4 accrochées sur les côtés des poutres primaires 3 ; on dispose ensuite, au-dessus de l'aire non couverte par la trame de la structure porteuse 3-4, un solivage 32 reposant sur lesdites poutres primaires et servant de support à la peau coffrante 33.According to the method of the invention, first of all a modular bearing structure is put in place comprising, on the one hand, primary beams 3 hung on the heads 2 of props or shoring posts 1 arranged at the angles of the meshes or modules constituting the frame of said modular supporting structure, and, on the other hand, secondary beams 4 hung on the sides of the primary beams 3; there is then, above the area not covered by the frame of the support structure 3-4, a joist 32 resting on said primary beams and serving as support for the skin formwork 33.

Les solives 32 peuvent être constituées par des pièces de bois à structure lamellaire de caractéristiques et section identiques à celles du corps des poutres secondaires 4. Selon une disposition caractéristique de l'invention, leur épaisseur e est identique à la distance d séparant les plans horizontaux P-P et P′-P′ dans lesquels se trouvent respectivement placées la surface supérieure S des poutres secondaires 4 et la surface supérieure S′ des poutres primaires 3.The joists 32 may consist of pieces of wood with a lamellar structure of characteristics and section identical to those of the body of the secondary beams 4. According to a characteristic arrangement of the invention, their thickness e is identical to the distance d separating the horizontal planes PP and P′-P ′ in which the upper surface S of the secondary beams 4 and the upper surface S ′ of the primary beams 3 are respectively located.

Selon le mode de mise en oeuvre du procédé de l'invention illustré aux figures 3 à 5, la trame est divisée en au moins deux parties T1, T2 séparées par un intervalle I correspondant à l'aire A1 non couverte par celle-ci, et on relie ces parties de trame séparées T1, T2, par un solivage 32 reposant sur les poutres primaires 3a disposées en rive desdites parties, ce solivage 32 surmontant ladite aire A1 et servant de support à la peau coffrante 33, par exemple constituée, de la façon habituelle, par des panneaux de contreplaqué présentent l'épaisseur souhaitable.According to the embodiment of the process of the invention illustrated in FIGS. 3 to 5, the frame is divided into at least two parts T1, T2 separated by an interval I corresponding to the area A1 not covered by it, and these separate frame parts T1, T2 are connected by a joist 32 resting on the primary beams 3a disposed on the bank of said parts, this joist 32 surmounting said area A1 and serving as support for the formwork skin 33, for example made up of the usual way, by plywood panels have the desired thickness.

Les panneaux de contreplaqué 33 sont placés en appui sur la face supérieure S des poutres secondaires 4 et sur la face supérieure des solives 32 qui sont donc disposées dans un même plan horizontal P-P.The plywood panels 33 are placed in abutment on the upper face S of the secondary beams 4 and on the upper face of the joists 32 which are therefore arranged in the same horizontal plane P-P.

Suivant le mode d'exécution du procédé de l'invention illustré aux figures 6 à 8, on installe une structure portante complémentaire 3c en rive de dalle, à distance et à hauteur identique des poutres primaires 3b constituant l'une des rives de la trame T du système portent modulaire, et on relie ladite structure portante complémentaire 3c et lesdites poutres primaires 3b au moyen de solives 32 disposées au-dessus de la surface A2 non couverte par ladite trame et présentent les caractéristiques susmentionnées.According to the embodiment of the method of the invention illustrated in FIGS. 6 to 8, a complementary supporting structure 3c is installed at the edge of the slab, at a distance and at the same height from the primary beams 3b constituting one of the edges of the frame T of the modular support system, and said complementary supporting structure 3c and said primary beams 3b are connected by means of joists 32 disposed above the surface A2 not covered by said frame and have the aforementioned characteristics.

La structure portante complémentaire 3c peut être avantageusement constituée par des poutres identiques aux poutres primaires 3, accrochées sur les têtes tombantes 21 d'étais 11 positionnés en rive de dalle.The additional supporting structure 3c can advantageously be constituted by beams identical to the primary beams 3, hung on the drooping heads 21 of props 11 positioned on the edge of the slab.

Les solives 32 sont placées en appui sur les faces supérieures des poutres 3b et 3c, tandis que les panneaux de contreplaqué constituant la peau coffrante 33, sont placés en appui sur la face supérieure des poutres secondaires 4 et sur ta face supérieure des solives 32 qui sont disposées dans un même plan horizontal P-P.The joists 32 are placed in abutment on the upper faces of the beams 3b and 3c, while the plywood panels constituting the formwork skin 33 are placed in abutment on the upper face of the secondary beams 4 and on the upper face of the joists 32 which are arranged in the same horizontal plane PP.

Le mode de mise en oeuvre du système coffrant modulaire illustré à la figure 9 diffère du procédé représenté aux figures 6 à 8, uniquement par le fait que la surface A3 non couverte par la trame de la structure porteuse 2-3-4, n'est pas délimitée par deux côtés parallèles. Dans ce cas, la structure portante complémentaire 3c installée en rive de dalle, n'est pas parallèle aux poutres primaires 3b constituant l'une des rive de la structure portante principale, de sorte que l'on utilise, dans ce cas, des solives 32 de longueurs différentes pour relier ladite structure portante complémentaire 3c auxdites poutres primaires 3b.The mode of implementation of the modular shuttering system illustrated in Figure 9 differs from the process shown in Figures 6 to 8, only in that the surface A3 not covered by the frame of the supporting structure 2-3-4, n ' is not bounded by two parallel sides. In this case, the additional supporting structure 3c installed on the edge of the slab, is not parallel to the primary beams 3b constituting one of the edge of the main supporting structure, so that joists are used in this case. 32 of different lengths to connect said complementary supporting structure 3c to said primary beams 3b.

On comprend que selon le procédé de l'invention, la quasi totalité de la surface coffrante peut être réalisée à l'aide de feuilles de contreplaqué utitisées telles que livrées par les fabricants,et qu'il est seulement nécessaire de découper spécialement les éléments de peau coffrante correspondant aux surfaces non couvertes par les feuilles de contreplaqué "standard". La mise en place de la peau coffrante est ainsi grandement simplifiée et on obtient un important gain de temps dans cette mise en place. D'autre part, il est possible de réutiliser les feuilles de contreplaqué "standard".It is understood that according to the method of the invention, almost all of the formwork surface can be produced using plywood sheets used as supplied by the manufacturers, and that it is only necessary to cut the elements of formwork skin corresponding to the surfaces not covered by "standard" plywood sheets. The establishment of the shuttering skin is thus greatly simplified and a significant time saving is obtained in this establishment. On the other hand, it is possible to reuse the "standard" plywood sheets.

Les structures porteuses modulaires pour coffrage de dalles comprennent parfois un système de stabitisation en partie basse, constitué par des entretoises retient la partie inférieure de la totalité des étais ou d'un certain nombre d'entre eux seulement.Modular load-bearing structures for slab formwork sometimes include a stabilization system in the lower part, consisting of spacers retaining the lower part of all the struts or only a certain number of them.

Selon une autre disposition caractéristique de l'invention, cette stabitisation en partie basse est réalisée au moyen de poutres 3d identiques aux poutres 3 utilisées pour constituer les poutres primaires du système coffrant modulaire, et les étais 1 sont agencés, dans leur partie inférieure, pour permettre l'accrochage et le verrouillage des abouts desdites poutres.According to another characteristic arrangement of the invention, this stabilization in the lower part is carried out by means of 3d beams identical to the beams 3 used to constitute the primary beams of the modular shuttering system, and the struts 1 are arranged, in their lower part, for allow the attachment and locking of the ends of said beams.

Afin de permettre l'accrochage et le verrouillage des abouts 5 des poutres-entretoises 3d dans quatre directions espacées de 90 degrés, les était 1 sont équipés de deux dispositifs superposés identiques orientés perpendiculairement. Chacun de ces dispositifs comprend une platine d'accrochage 34 et une bride double de verrouillage 35 disposée à distance et au-dessus de celle-ci. Cette platine d'accrochage et cette bride double de verrouillage comprennent, chacune, deux côtés fonctionnels opposés conformés et agencés de manière identique, pour permettre l'accrochage et le verrouillage de deux poutres de stabilisation 3d disposées dans le prolongement l'une de l'autre.In order to allow the attachment and locking of the ends 5 of the 3d spacer beams in four directions spaced 90 degrees, the was 1 are equipped with two identical superimposed devices oriented perpendicularly. Each of these devices comprises a hooking plate 34 and a double locking flange 35 disposed at a distance and above it. This attachment plate and this double locking flange each comprise two opposite functional sides shaped and arranged identically, to allow the attachment and locking of two 3d stabilization beams arranged in the extension of one of the other.

Chaque platine d'accrochage 34 est constituée par une simple plaque comportant des rebords ou bords relevés opposés 36 et rigidement fixée, par soudure ou autrement, autour du tube de l'étai, ces bords relevés délimitant deux gorges opposées 34a.Each attachment plate 34 is constituted by a simple plate having opposite raised edges or edges 36 and rigidly fixed, by welding or otherwise, around the forestay tube, these raised edges delimiting two opposite grooves 34a.

Chaque bride double de verrouillage 35 comprend deux joues parallèles 37 rigidement reliées au tube de l'étai par l'intermédiaire de deux plaques-entretoises superposées 38 fixées, par soudure ou autrement, autour dudit tube. Les joues 37 ont une longueur plus importante que cette des côtés des plaques-entretoises 38 auxquels elles sont rattachées, de sorte qu'elles constituent les branches espacées 39 de deux fourches opposées. Ces branches 39 comportent des ouvertures 40, 41 pour le passage d'une clavette 42 permettant le verrouillage des poutres 3d sur la bride double 35, par clavetage transversal. Pour obtenir cette liaison, le bossage 11 de l'about 5 de la poutre se trouve disposé entre les branches 39 et la clavette 42 est engagée à travers le passage transversal 12 dudit bossage.Each double locking flange 35 comprises two parallel cheeks 37 rigidly connected to the forestay tube by means of two superimposed spacer plates 38 fixed, by welding or otherwise, around of said tube. The cheeks 37 have a greater length than that of the sides of the spacer plates 38 to which they are attached, so that they constitute the spaced branches 39 of two opposite forks. These branches 39 have openings 40, 41 for the passage of a key 42 allowing the locking of the 3d beams on the double flange 35, by transverse keying. To obtain this connection, the boss 11 of the end piece 5 of the beam is placed between the branches 39 and the key 42 is engaged through the transverse passage 12 of said boss.

Une barrette de retenue 43 est disposée devant l'ouverture 40 de plus grande dimension de chaque fourche 39-39, cette barrette se trouvant emprisonnée à l'intérieur de la clavette 42 réalisée sous forme d'anneau aplati. De la sorte, la clavette ne peut être séparée de la branche munie de la barrette de retenue.A retaining bar 43 is disposed in front of the larger opening 40 of each fork 39-39, this bar being trapped inside the key 42 produced in the form of a flattened ring. In this way, the key cannot be separated from the branch provided with the retaining bar.

On a illustré, à la figure 35, une cellule de trame du système coffrant modulaire dont les étais 1 sont stabilisés, en partie basse, par le système de contreventement selon l'invention.Illustrated in Figure 35, a frame cell of the modular shuttering system whose props 1 are stabilized, in the lower part, by the bracing system according to the invention.

Claims (17)

1. - Procédé pour coffrage de dalles en béton, utilisant un système portent modulaires comprenant : - des étais ou poteaux d'étalement (1), de préférence du type à tête tombante (2) ; - des poutres primaires ou poutres porteuses (3) comportant, latéralement, des gorges longitudinales (9) et destinées à s'accrocher sur les têtes (2) des étais ou poteaux (1) par l'intermédiaire de leurs abouts (5) munis d'ergots d'accrochage (10) ; - des poutres secondaires (4) appelées à s'accrocher sur les côtés des poutres primaires (3), par l'intermédiaire de leurs abouts (5) munis d'ergots d'accrochage (10′) ; ces poutres primaires (3) et ces poutres secondaires (4) étant conformées de manière que lorsque les premières (3) se trouvent accrochées sur les têtes (2) des étais (1) et les secondes (4) accrochées, par l'intermédiaire de leurs abouts d'accrochage (5′), sur le côté des poutres primaires, les surfaces supérieures (S) desdites poutres secondaires (4) se trouvent disposées dans un plan (P-P) situé à distance et au-dessus du plan (P′-P′) dans lequel se trouvent placées les surfaces supérieures (S′) desdites poutres primaires (3), ce procédé étant caractérisé par le fait que les peaux ou surfaces coffrantes (33) sont placées en appui sur les faces supérieures (S) desdites poutres secondaires (4), de sorte qu'un espace (d) se trouve ménagé, au-dessous desdites peaux ou surfaces coffrantes (33), entre les plans (P-P ; P′P′) dans lesquels sont disposées les faces supérieures (S ; S′) des poutres secondaires (4) et des poutres primaires (3), respectivement. 1. - Method for formwork of concrete slabs, using a modular door system comprising: - props or spreading posts (1), preferably of the drop head type (2); - primary beams or supporting beams (3) comprising, laterally, longitudinal grooves (9) and intended to hang on the heads (2) of the props or posts (1) by means of their provided ends (5) hooking lugs (10); - secondary beams (4) called to hang on the sides of the primary beams (3), by means of their ends (5) provided with hooking lugs (10 ′); these primary beams (3) and these secondary beams (4) being shaped so that when the first (3) are hung on the heads (2) of the props (1) and the second (4) hooked, via of their attachment ends (5 ′), on the side of the primary beams, the upper surfaces (S) of said secondary beams (4) are arranged in a plane (PP) located at a distance and above the plane (P ′ -P ′) in which the upper surfaces (S ′) of said primary beams (3) are placed, this method being characterized in that the skins or formwork surfaces (33) are placed in abutment on the upper faces (S ) of said secondary beams (4), so that a space (d) is provided, below said skins or formwork surfaces (33), between the planes (PP; P′P ′) in which the faces are arranged upper (S; S ′) secondary beams (4) and primary beams (3), respectively is lying. 2. - Système portant modulaire pour coffrage de dalles en béton, du genre comprenant : - des étais ou poteaux d'étaiement (1), de préférence du type à tête tombante (2) ; - des poutres primaires ou poutres porteuses (3) comportent, latéralement, des gorges longitudinales (9) et destinées à s'accrocher sur les têtes (2) des étais ou poteaux (1) par l'intermédiaire de leurs abouts (5) munis d'ergots d'accrochage (10) ; - des poutres secondaires (4) appelées à s'accrocher sur les poutres primaires (3) par l'intermédiaire de leurs abouts (5′) muni d'ergots d'accrochage ; ces poutres primaires (3) et ces poutres secondaires (4) étant conformées de manière que lorsque les premières (3) se trouvent accrochées sur les têtes (2) des étais (1) et les secondes (4) accrochées, par l'intermédiaire de leurs abouts d'accrochage (5), sur le côté des poutres primaires, les surfaces supérieures (S) desdites poutres secondaires (4) se trouvent disposées dans un plan (P-P) situé à distance et au-dessus du plan (P′-P′) dans lequel se trouvent placées les surfaces supérieures (S′) desdites poutres primaires (3), caractérisé en ce que les faces supérieures (s) desdites poutres secondaires (4) sont destinées à l'appui des peaux ou surfaces coffrantes (33), de sorte qu'un espace (d) se trouve ménagé au-dessous desdites peaux ou surfaces coffrantes (33), entre les plans (P-P ; P′-P′) dans lesquels sont disposées les faces supérieures (S ; S′) des poutres secondaires (4) et des poutres primaires, respectivement. 2. - Modular bearing system for formwork of concrete slabs, of the type comprising: - props or shoring posts (1), preferably of the drop head type (2); - Primary beams or load-bearing beams (3) comprise, laterally, longitudinal grooves (9) and intended to hang on the heads (2) of the props or posts (1) by means of their provided ends (5) hooking lugs (10); - secondary beams (4) called to hang on the primary beams (3) via their ends (5 ′) provided with hooking lugs; these primary beams (3) and these secondary beams (4) being shaped so that when the first (3) are hung on the heads (2) of the props (1) and the second (4) hooked, via of their attachment ends (5), on the side of the primary beams, the upper surfaces (S) of said secondary beams (4) are arranged in a plane (PP) located at a distance and above the plane (P ′ -P ′) in which the upper surfaces (S ′) of said primary beams (3) are placed, characterized in that the upper faces (s) of said secondary beams (4) are intended to support the skins or formwork surfaces (33), so that a space (d) is formed below said skins or formwork surfaces (33), between the planes (PP; P′-P ′) in which the upper faces (S; S ′) secondary beams (4) and primary beams, respectively. 3. - Système portant modulaire pour coffrage de dalles en béton, selon la revendication 2, caractérisé en ce que les abouts (5, 5′) des poutres (3, 4) comportent, au-dessus et à distance de leur ergot d'accrochage (10, 10′), un bossage (11, 11′) présentant une surface d'appui (11a, 11a′). 3. - modular bearing system for formwork of concrete slabs, according to claim 2, characterized in that the ends (5, 5 ′) of the beams (3, 4) comprise, above and at a distance from their lug attachment (10, 10 ′), a boss (11, 11 ′) having a bearing surface (11a, 11a ′). 4. - Système portent modulaire pour coffrage de dalles en béton, suivant la revendication 3, utilisant des étais (1) à tête tombante (2) connus en soi, cette tête tombante (2) comprenant une colonne fixe (16) munie, à son sommet, d'une plaque (19) destinée à l'appui du contreplaqué constituant la peau coffrante (33), et un support (17) monté avec une aptitude de mouvement axial autour de ladite colonne fixe (16) et comportant une platine d'accrochage (22) pour l'accrochage des abouts (5) de poutres primaires (3), caractérisé en ce que ladite tête tombante comprend également une console de soutien (23) disposée au-dessus et à distance de la platine d'accrochage (22), pour l'appui du bossage (11) des abouts (5) de poutres primaires (3). 4. - modular door system for formwork of concrete slabs, according to claim 3, using props (1) with drop head (2) known per se, this drop head (2) comprising a fixed column (16) provided, at its top, with a plate (19) intended to support the plywood constituting the skin formwork (33), and a support (17) mounted with an axial movement capacity around said fixed column (16) and comprising a hooking plate (22) for hooking the ends (5) of primary beams (3 ), characterized in that said drooping head also comprises a support console (23) disposed above and at a distance from the attachment plate (22), for supporting the boss (11) of the ends (5) of primary beams (3). 5. - Système portant modulaire pour coffrage de dalles en béton, selon la revendication 4, caractérisé en ce que la colonne fixe 16 de l'étai comporte également une plaque de butée (20) disposée au-dessous de la plaque supérieure fixe (19) et au-dessus de la console de soutien (23), cette plaque de butée (20) s'opposant au soulèvement des poutres primaires (3) accrochée sur la tête tombante (2) lorsque celle-ci se trouve en position haute. 5. - Modular bearing system for formwork of concrete slabs, according to claim 4, characterized in that the fixed column 16 of the forestay also includes a stop plate (20) disposed below the fixed upper plate (19 ) and above the support console (23), this stop plate (20) opposing the lifting of the primary beams (3) hung on the drooping head (2) when the latter is in the high position. 6. - Système portant modulaire pour coffrage de dalles en béton selon la revendication 2, comportent des entretoises de stabitisation (3d) reliant au moins certains étais (1) de ce système, caractérisé en ce que lesdites entretoises de stabilisation (3d) sont constituées par des poutres identiques aux poutres primaires (3) dudit système, et en ce que lesdits étais sont agencés, dans leur partie inférieure, pour permettre l'accrochage et le verrouillage des abouts (5) desdites poutres (3d). 6. - modular bearing system for formwork of concrete slabs according to claim 2, comprise stabilization spacers (3d) connecting at least some struts (1) of this system, characterized in that said stabilization spacers (3d) are formed by beams identical to the primary beams (3) of said system, and in that said struts are arranged, in their lower part, to allow the attachment and locking of the ends (5) of said beams (3d). 7. - Système portant modulaire pour coffrage de dalles en béton, suivant l'une quelconque des revendications 2 à 6, utitisant des poutres (3) constituées par des profilés métalliques munis d'abouts d'accrochage (5). caractérisé en ce que les flasques d'about (5) comportent, sur leur côté interne, au moins une petite console (13) disposée au-dessous et au contact d'une cloison horizontale (14) dont sont pourvus lesdits profilés, de façon à supporter l'essentiel des forces appliquées sur lesdites poutres (3). lors de l'utitisation du système portant. 7. - Modular bearing system for formwork of concrete slabs, according to any one of claims 2 to 6, using beams (3) formed by metal profiles provided with attachment ends (5). characterized in that the end flanges (5) comprise, on their internal side, at least one small console (13) disposed below and in contact with a horizontal partition (14) with which said profiles are provided, so to withstand most of the forces applied to said beams (3). when using the bearing system. 8. - Système portant modulaire pour coffrage de dalles en béton, suivant l'une quelconque des revendications 2 à 6, utitisant des poutres (4) constituées par des pièces de bois, par exemple d'un type à structure lamellairee, munis d'abouts d'accrochage (5′), caractérisé en ce que les flasques d'about (5′) comportent une semelle de soutien (15) orientée vers l'arrière et fixée sous la face inférieure de l'extrémité de la poutre (4) proprement dite, de façon à supporter l'essentiel des forces appliquées sur lesdites poutres (4), lors de l'utitisation du système portant. 8. - modular bearing system for formwork of concrete slabs, according to any one of claims 2 to 6, using beams (4) consisting of pieces of wood, for example of a type with lamellar structure, provided with attachment ends (5 ′), characterized in that the end flanges (5 ′) comprise a support sole (15) oriented towards the rear and fixed under the underside of the end of the beam (4 ) proper, so as to withstand most of the forces applied to said beams (4), during the use of the bearing system. 9. - Système portant modulaire pour coffrage de dalles en béton, suivant la revendication 2, caractérisé en ce que la distance (D3) comprise entre les ergots d'accrochage (10, 10′) et la base (11a) des bossages d'appui (11, 11′) est sensiblement égale à la distance (D2) comprise entre les ailettes d'accrochage (8) et la face supérieure (S′) des poutres (3) utitisables comme poutres primaires, sur laquelle est destinée à reposer ladite base. 9. - Modular bearing system for formwork of concrete slabs, according to claim 2, characterized in that the distance (D3) between the lugs (10, 10 ′) and the base (11a) of the bosses support (11, 11 ′) is substantially equal to the distance (D2) between the attachment fins (8) and the upper face (S ′) of the beams (3) usable as primary beams, on which is intended to rest said base. 10. - Système portant modulaire pour coffrage de dalles en béton, selon la revendications 4, caractérisé en ce que la distance (D3) comprise entre les ergots d'accrochage (10) et la base (11a) des bossages d'appui (11) des poutres primaires (3), est sensiblement égale à la distance (D4) comprise entre le rebord (24) de la platine d'accrochage (22) et la surface d'appui de la console de soutien (23) de la tête tombante (2) des étais (1). 10. - Modular bearing system for formwork of concrete slabs, according to claim 4, characterized in that the distance (D3) between the latching lugs (10) and the base (11a) of the support bosses (11 ) primary beams (3), is substantially equal to the distance (D4) between the flange (24) of the attachment plate (22) and the bearing surface of the support console (23) of the head falling (2) from the props (1). 11. - Système portant modulaire pour coffrage de dalles en béton, selon l'une quelconque des revendications 2 à 10, caractérisé en ce que les extrémités des poutres utilisées comme poutres primaires (3) présentent, dans leur partie inférieure, un chanfrein (31) disposé en arrière et à proximité des ergots d'accrochage (10). 11. - modular bearing system for formwork of concrete slabs, according to any one of claims 2 to 10, characterized in that the ends of the beams used as primary beams (3) have, in their lower part, a chamfer (31 ) arranged behind and near the hooking pins (10). 12. - Système portant modulaire pour coffrage de dalles en béton, suivant la revendication 6, caractérisé en ce que l'agencement des étais destinés à permettre l'accrochage et le verrouillage des abouts (5) des poutres de stabitisation (3d), comprend deux dispositifs superposés identiques orientés perpendiculairement, chacun de ces dispositifs comportant une platine d'accrochage (34) pour l'accrochage des ergots d'accrochage (10) des abouts (5) de poutres de stabilisation (3d) et une bride double de verrouillage (35) disposée à distance et au-dessus de ledite platine d'accrochage (34) et conformée pour permettre la fixation, par clavetage transversal, du bossage (11) desdits abouts (5) de poutres de stabilisation (3d) dans lequel est ménagé un passage transversal (12). 12. - Modular bearing system for formwork of concrete slabs, according to claim 6, characterized in that the arrangement of the props intended to allow the attachment and locking of the ends (5) of the stabilizing beams (3d), comprises two identical superimposed devices oriented perpendicularly, each of these devices comprising a hooking plate (34) for hooking the hooking lugs (10) of the ends (5) of stabilizing beams (3d) and a double locking flange (35) arranged at a distance and above the said attachment plate (34) and shaped to allow the fixing, by transverse keying, of the boss (11) of said ends (5) of stabilization beams (3d) in which is provided a transverse passage (12). 13. - Système portant modulaire pour coffrage de dalles en béton, selon l'une quelconque des revendications 1 à 10, caractérisé en ce qu'il comporte encore des solives (32) destinées à reposer sur les poutres primaires (3a, 3b) de la structure portante (3-4) et à supporter la peau coffrante (33), ces solives (32) ayant une épaisseur (e) identique à la distance (d) comprise entre les plans (P′-P′, P-P) où se trouvent disposées les faces supérieures (S′, S) des poutres primaires (3) et secondaires (4) lorsque ladite structure portante est en place. 13. - modular bearing system for formwork of concrete slabs, according to any one of claims 1 to 10, characterized in that it also comprises joists (32) intended to rest on the primary beams (3a, 3b) of the supporting structure (3-4) and to support the formwork skin (33), these joists (32) having a thickness (e) identical to the distance (d) between the planes (P′-P ′, PP) where the upper faces (S ′, S) of the primary (3) and secondary (4) beams are arranged when said supporting structure is in place. 14. - Procédé de coffrage de dalles en béton, selon la revendication 1, applicable lorsque la trame de la structure portante ne couvre pas exactement la surface de la dalle à réaliser, caractérisé en ce que l'on dispose au-dessus de l'aire (A1, A2, A3) non couverte par la trame (T, T1, T2) de la structure porteuse (3-4), et en appui sur des poutres primaires (3a, 3b) de ladite structure, un solivage constitué de solives (32) dont l'épaisseur (e) est identique à la distance (d) comprise entre les plans (P′-P′, P-P) où se trouvent disposées les faces supérieures (S′, S) des poutres primaires (3) et secondaires (4), ce solivage servant de support de peau coffrante (33). 14. - A method of formwork of concrete slabs, according to claim 1, applicable when the frame of the supporting structure does not exactly cover the surface of the slab to be produced, characterized in that one has above the area (A1, A2, A3) not covered by the frame (T, T1, T2) of the supporting structure (3-4), and resting on primary beams (3a, 3b) of said structure, a joist consisting of joists (32) whose thickness (e) is identical to the distance (d) between the planes (P′-P ′, PP) where the upper faces (S ′, S) of the primary beams are located (3 ) and secondary (4), this joist serving as a formwork support (33). 15. - Procédé de coffrage de dalles en béton, selon la revendication 14, caractérisé en ce que l'on divise ladite trame en au moins deux parties (T1, T2) séparées par un intervalle (I) correspondant à l'aire ou surface (A1) qui ne peut être couverte pas ladite trame, et en ce que l'on relie ces deux parties de trame séparées (T1, T2) par un solivage (32) reposant sur les poutres primaires (3a) disposée en rive desdites parties (T1, T2), ce solivage (32) surmontant l'aire (A1) non couverte par la trame et servant de support de peau coffrante (33). 15. - A method of formwork of concrete slabs, according to claim 14, characterized in that one divides said frame into at least two parts (T1, T2) separated by an interval (I) corresponding to the area or surface (A1) which cannot be covered by said frame, and in that these two separate frame parts (T1, T2) are connected by a joist (32) resting on the primary beams (3a) arranged on the bank of said parts (T1, T2), this joist (32) surmounting the area (A1) not covered by the frame and serving as a skin support formwork (33). 16. - Procédé de coffrage de dalles en béton, selon la revendication 14, caractérisé en ce qu'on installe une structure portante complémentaire (3c) en rive de dalle, à distance et à bouteur identique des poutres primaires (3b) constituant l'une des rives de la trame (T), et on relie ladite structure portante complémentaire et lesdites poutres primaires (3b) au moyen d'un solivage (32) disposé au-dessus de la surface ou aire (A2, A3) non couverte par ladite trame (T) et servant de support de peau coffrante (33). 16. - A method of formwork of concrete slabs, according to claim 14, characterized in that a complementary supporting structure (3c) is installed at the edge of the slab, at a distance and with identical bulldozer from the primary beams (3b) constituting the one of the edges of the frame (T), and said complementary supporting structure and said primary beams (3b) are connected by means of a joist (32) disposed above the surface or area (A2, A3) not covered by said frame (T) and serving as a formwork support (33). 17. - Coffrage modulaire pour dalles en béton, caractérisé en ce qu'il comporte un système portant modulaire selon l'une quelconque des revendications 2 à 13, et/ou obtenu par la mise en oeuvre du procédé selon l'une quelconque des revendications 1, ou 14 à 16. 17. - Modular formwork for concrete slabs, characterized in that it comprises a modular bearing system according to any one of claims 2 to 13, and / or obtained by the implementation of the method according to any one of the claims 1, or 14 to 16.
EP92430014A 1991-04-30 1992-04-30 Modular supporting system for floor forms; method and form using this system Withdrawn EP0511921A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP96116162A EP0751268A2 (en) 1991-04-30 1992-04-30 Modular supporting system for concrete floor shutterings

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9105653A FR2676082B1 (en) 1991-04-30 1991-04-30 MODULAR BEARING SYSTEM FOR SLAB FORMWORK, METHOD AND FORMWORK USING SUCH A SYSTEM.
FR9105653 1991-04-30

Publications (1)

Publication Number Publication Date
EP0511921A1 true EP0511921A1 (en) 1992-11-04

Family

ID=9412644

Family Applications (2)

Application Number Title Priority Date Filing Date
EP92430014A Withdrawn EP0511921A1 (en) 1991-04-30 1992-04-30 Modular supporting system for floor forms; method and form using this system
EP96116162A Withdrawn EP0751268A2 (en) 1991-04-30 1992-04-30 Modular supporting system for concrete floor shutterings

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP96116162A Withdrawn EP0751268A2 (en) 1991-04-30 1992-04-30 Modular supporting system for concrete floor shutterings

Country Status (2)

Country Link
EP (2) EP0511921A1 (en)
FR (1) FR2676082B1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4305300A1 (en) * 1993-02-20 1994-08-25 Peri Gmbh Floor shuttering
GB2304140A (en) * 1995-08-08 1997-03-12 Lee Wen Yuan Floor form assembly and apparatus used therewith
US5614122A (en) * 1993-02-20 1997-03-25 Peri Gmbh Ceiling form
ES2143377A1 (en) * 1997-09-15 2000-05-01 Ulma C Y E S Coop Perfected horizontal formwork
KR100788742B1 (en) 2007-03-15 2008-01-02 (주) 콘스텍 Combination structure of deck to finish narrow space
EP1903163A1 (en) * 2005-07-11 2008-03-26 Sistemas Técnicos de Encofrados, S.A. Purlin beam comprising attachable ends
US7640871B2 (en) * 2001-04-03 2010-01-05 Ulma Cye., S. Coop. Slab formwork system
WO2013098159A1 (en) * 2011-12-29 2013-07-04 Friedr. Ischebeck Gmbh Panel for a system ceiling formwork, and a system ceiling formwork
WO2013098158A1 (en) * 2011-12-29 2013-07-04 Friedr. Ischebeck Gmbh Panel for a system ceiling formwork, and a system ceiling formwork
IT201800009730A1 (en) * 2018-10-24 2020-04-24 Faresin Formwork Spa BEAM FOR FORMWORK SYSTEMS
US11047142B1 (en) * 2020-07-31 2021-06-29 Bond Formwork Systems, LLC Main beam structure and profile for formwork grid systems

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4211299C2 (en) * 1992-04-04 2000-01-20 Dingler Gerhard Profile - main beam
ES2174706B1 (en) * 2000-06-12 2003-10-16 Sistemas Tecn Encofrados Sa PERFECTION IN RECOVERABLE FLOOR FLOORS.
FR2821104B1 (en) * 2001-02-22 2004-02-13 Alphi MODULAR STRUCTURE FOR SUPPORTING A FORM OF A SLAB OR THE LIKE
EP3798387B1 (en) 2019-09-26 2024-02-14 Sistemas Técnicos de Encofrados, S.A. Support system for formworks

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1427518A (en) * 1972-04-10 1976-03-10 Acrow Eng Ltd Apparatus for use in constructing buildings
GB1457136A (en) * 1973-09-21 1976-12-01 Mills Scaffold Co Ltd Builders formwork
GB2005332A (en) * 1977-09-21 1979-04-19 Rapid Metal Developments Ltd Supporting floor formwork
FR2475099A1 (en) * 1980-02-06 1981-08-07 Peri Werk Schwoerer Kg Artur MODULAR FORMWORK WITH FALLING HEADS FOR CONCRETE FLOORS
DE3147081A1 (en) * 1981-05-30 1982-12-30 Udo 4836 Herzebrock Rose Supporting framework for concrete shutterings
DE8907861U1 (en) * 1989-06-28 1989-08-10 Rose, Udo, 4836 Herzebrock Formwork supports for concrete formwork
DE9005901U1 (en) * 1990-05-25 1990-07-26 NOE-Schaltechnik Georg Meyer-Keller GmbH + Co, 7334 Süßen Ceiling formwork system, especially for producing concrete ceilings
DE3921064A1 (en) * 1989-06-28 1991-01-10 Udo Rose Supporting beam for concrete shuttering - has end plates with flanges joined to sidewalls forming U=shaped connectors

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1427518A (en) * 1972-04-10 1976-03-10 Acrow Eng Ltd Apparatus for use in constructing buildings
GB1457136A (en) * 1973-09-21 1976-12-01 Mills Scaffold Co Ltd Builders formwork
GB2005332A (en) * 1977-09-21 1979-04-19 Rapid Metal Developments Ltd Supporting floor formwork
FR2475099A1 (en) * 1980-02-06 1981-08-07 Peri Werk Schwoerer Kg Artur MODULAR FORMWORK WITH FALLING HEADS FOR CONCRETE FLOORS
DE3147081A1 (en) * 1981-05-30 1982-12-30 Udo 4836 Herzebrock Rose Supporting framework for concrete shutterings
DE8907861U1 (en) * 1989-06-28 1989-08-10 Rose, Udo, 4836 Herzebrock Formwork supports for concrete formwork
DE3921064A1 (en) * 1989-06-28 1991-01-10 Udo Rose Supporting beam for concrete shuttering - has end plates with flanges joined to sidewalls forming U=shaped connectors
DE9005901U1 (en) * 1990-05-25 1990-07-26 NOE-Schaltechnik Georg Meyer-Keller GmbH + Co, 7334 Süßen Ceiling formwork system, especially for producing concrete ceilings

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4305300A1 (en) * 1993-02-20 1994-08-25 Peri Gmbh Floor shuttering
US5614122A (en) * 1993-02-20 1997-03-25 Peri Gmbh Ceiling form
GB2304140A (en) * 1995-08-08 1997-03-12 Lee Wen Yuan Floor form assembly and apparatus used therewith
FR2745836A1 (en) * 1995-08-08 1997-09-12 Lee Wen Yuan FLOOR SHAPE MOUNTING
GB2304140B (en) * 1995-08-08 1999-07-28 Lee Wen Yuan Floor form assembly
ES2143377A1 (en) * 1997-09-15 2000-05-01 Ulma C Y E S Coop Perfected horizontal formwork
US7640871B2 (en) * 2001-04-03 2010-01-05 Ulma Cye., S. Coop. Slab formwork system
EP1903163A1 (en) * 2005-07-11 2008-03-26 Sistemas Técnicos de Encofrados, S.A. Purlin beam comprising attachable ends
EP1903163A4 (en) * 2005-07-11 2013-05-01 Sistemas Tecn Encofrados Sa Purlin beam comprising attachable ends
KR100788742B1 (en) 2007-03-15 2008-01-02 (주) 콘스텍 Combination structure of deck to finish narrow space
WO2013098159A1 (en) * 2011-12-29 2013-07-04 Friedr. Ischebeck Gmbh Panel for a system ceiling formwork, and a system ceiling formwork
WO2013098158A1 (en) * 2011-12-29 2013-07-04 Friedr. Ischebeck Gmbh Panel for a system ceiling formwork, and a system ceiling formwork
DE102011057121A1 (en) * 2011-12-29 2013-07-04 Friedr. Ischebeck Gmbh Panel for a system slab formwork and system slab formwork
DE102011057124A1 (en) * 2011-12-29 2013-07-04 Friedr. Ischebeck Gmbh Panel for a system slab formwork and system slab formwork
DE102011057121B4 (en) * 2011-12-29 2013-11-14 Friedr. Ischebeck Gmbh Panel for a system slab formwork and system slab formwork
IT201800009730A1 (en) * 2018-10-24 2020-04-24 Faresin Formwork Spa BEAM FOR FORMWORK SYSTEMS
WO2020083935A1 (en) * 2018-10-24 2020-04-30 Faresin Formwork S.p.A. Beam for formwork systems
US11047142B1 (en) * 2020-07-31 2021-06-29 Bond Formwork Systems, LLC Main beam structure and profile for formwork grid systems
US11473321B2 (en) * 2020-07-31 2022-10-18 Bond Formwork Systems, LLC Main beam structure and profile for formwork grid systems

Also Published As

Publication number Publication date
EP0751268A3 (en) 1997-02-12
EP0751268A2 (en) 1997-01-02
FR2676082B1 (en) 1997-08-29
FR2676082A1 (en) 1992-11-06

Similar Documents

Publication Publication Date Title
EP0511921A1 (en) Modular supporting system for floor forms; method and form using this system
FR3017891A1 (en) STRUCTURES AND METHODS FOR FORMING SLABS
FR2501267A1 (en) Load platform for scaffolding - comprises panels with longitudinal edges held together by co-operating fastenings
EP2044273B1 (en) Shoring tower
EP0057168A1 (en) Assembling elements for provisional stairways
FR2475099A1 (en) MODULAR FORMWORK WITH FALLING HEADS FOR CONCRETE FLOORS
FR3021985A1 (en) CONNECTING DEVICE WITH IMPROVED STABILITY
EP0521745B1 (en) Method for erecting and dismantling shuttering for walls poured on a reference surface and means for its application
EP2402531A2 (en) Prefabricated concrete staircase with modular stair carriage
FR2497862A1 (en) FORMWORK FOR THE CASTING OF CONCRETE WALLS AND METHOD OF ASSEMBLY
FR2934000A1 (en) Climbing protection device for masonry construction, has integration parts integrating respective posts or masts to masonry construction in vertical raised position in which posts or masts support guardrail element
FR2487410A1 (en) Climbing shutter for casting concrete wall - has single jack to raise brackets retaining shutter sections on shoes detachably fixed to wall
FR2689549A1 (en) Ceiling formwork device.
EP2706166B1 (en) Modular strutting tower for civil engineering and construction
EP3655592B1 (en) Retaining wall comprising blocs and reinforcement
FR2589506A1 (en) Device for fixing a bracket for circulation or formwork on a vertical wall of a concrete structure
FR2760482A1 (en) Shuttering for the formation of concrete slabs or floors using a modular, load bearing system
EP3121350B1 (en) Prefabricated formwork element, formwork obtained and method for manufacturing a slab of a construction with a pass through opening delimited by said formwork
EP2177691B1 (en) Scaffolding structure including stairs
FR3029550A1 (en) DEVICE FOR TEMPORARILY ASSEMBLING ELEMENTS ON A BEAM OF BUILDING STRUCTURE
FR3006353A1 (en) FORMING BANK COMPRISING A MOBILE CIRCULATION PLATFORM ACCORDING TO THE VERTICAL DIRECTION
EP1013848A1 (en) Roof-scaffold
FR2474562A1 (en) Retaining wall reinforced concrete L-section - uses precast base and stem slabs with link and site concrete in recessed vertical joint
FR2689543A1 (en) Supporting framework, e.g. for floor slab shuttering - uses secondary beams with coupling elements on its ends to engage with main beams
FR2601335A1 (en) Collapsible pallet box

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE ES FR GB IT

17P Request for examination filed

Effective date: 19930423

17Q First examination report despatched

Effective date: 19941229

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SCOP SOCIETE NOUVELLE RICARD

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19970208