EP1544377A1 - Form for curved wall - Google Patents

Abstract

The piece has vertically-extending profile rails (3,4) installed at the backside of a form skin (1). Horizontally-extending curved shaping bars (13) are detachably fixed to the profile rails, and each forms at least two cast pieces (14) held together by shoes. AT least one the cast piece extends upward to the front-side end (16,17) of the shaping bar.

Description

The invention relates to a Schaluggselement a circular formwork, which is a formwork skin has, at the rear side vertically extending profile rails are attached, with which horizontally extending curved shaping rails detachably connected are

Shuttering elements of this type are known. Around one side of the circular formwork (ie e.g. the outer formwork) form such formwork elements are several side by side and / or superimposed formwork elements this Kind of connected. The outer and inner formwork can be used here in be formed analogously. In the area between the vertical rails the concrete pressure is carried by the formlining. The shaping Rails, also called anchor rails, give the curved shape of the formwork element in front. These shaping rails usually continue to form the Aufund Abutment for anchors of through-anchored formwork.

Such formwork elements are reusable. If here the radius of curvature the circular formwork, for example, smaller than in the previous application should be, then the demounted shaping rails with a corresponding Rounding device to the required greater curvature by plastic Rounding deformation. Since the shaping rails radially further inside lie as the formwork, would the shaping rails after the orbit protrude laterally over the formwork. The shaping rails are therefore Cut off accordingly to finish flush with the formlining at the side. If the formwork element in a later use for producing a Circular formwork with a larger radius of curvature (= a smaller curvature) is to be used, so the forming rails must be replaced because the previous shaping rails are now too short.

In addition to circular formwork, in which the shaping rails by means of a corresponding Rounding device by plastic deformation to the desired Curvature deformed, mechanical systems are also known in which the shaping rails have joints that correspond to the desired Curvature of the formwork element are adjustable. The disadvantage here is the more complicated Construction and the elaborate adjustment work of the joints.

The object of the invention is a formwork element of the type mentioned to provide, which in a simple structure for different radii of curvature the circular formwork can be used without cutting off the ends the shaping rails or an exchange of these shaping rails is required. This is achieved by a formwork element with the invention Features of claim 1.

According to the invention, a length-adjustable shaping rail is thus provided. The shaping rail can thereby in the case of an internal formwork at shortened a stronger curvature and extended at a lower curvature be extended or in the case of an external formwork with a greater curvature and be shortened at a lower curvature, so that they are respectively at the edge of Formwork ends. The strand elements are dependent on the curvature different distances offset against each other. In the case of an internal formwork is the smallest radius of curvature for which the shuttering element can be used, the one in which the strand elements without offset against each other at the side edges of the Formwork ends. In the case of an external formwork this is the largest radius of curvature the case for which the formwork element is used.

The connection of the forming rails with the vertical rails preferably takes place over the shoes. These can be used for this purpose first adjacent to the rail and a second, the strand elements on Have their facing away from the formwork facing sides clamping part, wherein the clamping parts are clamped by means of a clamping screw, which holes in the clamping parts and in a lying parallel to the formwork web of a respective Passed through profile rail.

In a preferred embodiment of the invention are above and below a longitudinal opening of the shaping rail in each case at least two together adjacent strand elements present, of which at least one of the respective end face of the shaping rail extends. Through the longitudinal openings can anchor rods for the anchorage of the formwork occur.

Preferably, the strand elements are plate-shaped, so have in Cross section the shape of a flat rectangle. Such flat elements can be The easiest way to go around it with rollers with the least twisting.

Fig. 1

eine schematische perspektivische Darstellung von zwei übereinander angeordneten erfindungsgemäßen Schalungselementen;

Fig. 2

eine vergrößerte perspektivische Darstellung eines Randbereichs des erfindungs-gemäßen Schalungselements von Fig. 1, in größerem Detail;

Fig. 3

eine Rückansicht des linken unteren Eckbereichs des Schalungselements von Fig. 1;

Fig. 4

einen Schnitt entlang der Linie A-A von Fig. 3;

Fig. 5, Fig. 6 und Fig. 7

eine Ansicht (Blickrichtung B in Fig. 6), eine Seitenansicht (Blick-richtung C in Fig. 5) und eine Draufsicht (Blickrichtung D in Fig. 6) eines Klemmteils eines Schuhs zum Zusammenhalten der Strangelemente;

Fig. 8 und Fig. 9

eine Seitenansicht analog Fig. 6 (Blickrichtung E in Fig. 9) und eine Draufsicht analog Fig. 7 (Blickrichtung F in Fig. 8) einer weiteren Ausführungsform eines Klemmteils;

Fig. 10

eine schematische Darstellung eine Verbindungseinheit zur Verbindung der formgebenden Schienen von zwei seitlich aneinander angrenzenden Schalungselementen;

Fig. 11 und Fig. 12

eine Seitenansicht analog Fig. 6 (Blickrichtung G in Fig. 12) und eine Draufsicht analog Fig. 7 (Blickrichtung H in Fig. 11) einer weiteren Ausführungsform eines Klemmteils.

Further advantages and details of the invention are explained below with reference to the accompanying drawings. In this show:

Fig. 1

a schematic perspective view of two superposed formwork elements according to the invention;

Fig. 2

an enlarged perspective view of an edge region of the inventive formwork element of Figure 1, in greater detail.

Fig. 3

a rear view of the left lower corner region of the formwork element of Fig. 1;

Fig. 4

a section along the line AA of Fig. 3;

Fig. 5, Fig. 6 and Fig. 7

a view (viewing direction B in Fig. 6), a side view (viewing direction C in Fig. 5) and a plan view (viewing direction D in Figure 6) of a clamping part of a shoe for holding the strand elements;

FIGS. 8 and 9

a side view analogous to FIG. 6 (viewing direction E in FIG. 9) and a plan view analogous to FIG. 7 (viewing direction F in FIG. 8) of a further embodiment of a clamping part;

Fig. 10

a schematic representation of a connecting unit for connecting the forming rails of two laterally adjacent formwork elements;

11 and FIG. 12

a side view analogous to FIG. 6 (viewing direction G in FIG. 12) and a plan view analogous to FIG. 7 (viewing direction H in FIG. 11) of a further embodiment of a clamping part.

In Fig. 1 are two formwork elements according to the invention an inner formwork a Circular formwork in superimposed arrangement shown. The formwork elements the outer formwork of the circular formwork can be formed in an analogous manner be. A respective formwork element has a formwork skin 1, for example Wood (e.g., plywood), and preferably across the entire width of the Shuttering element is formed continuously. In height, the formwork can 1 also be formed continuously or of several adjoining Sections exist. The formwork 1, for example, by a steel plate be formed.

At the side facing away from the scarf surface 2 back of the formwork 1 are several vertically extending profile rails 3, 4 attached, for example screwed. There are in this case two edge-side rails 3, preferably a Have U-shaped cross-section. The open sides of the U-shaped cross sections of the two edge profile rails 3 are in each case from the edge of the formwork element away. The rails 3 here have the back of the Formwork skin 1 adjacent and fixed to the formwork 1 webs 9, of the webs. 9 outgoing edge and perpendicular to the formwork 1 standing webs 5 and to the from the formwork 1 remote ends of the webs 5 of these outgoing parallel to the formwork 1 extending webs 6. The perpendicular to the formwork 1 standing webs 5 are preferably flush with the front ends 7, 8 of the Formwork 1.

Between the marginal profile rails 3 are a plurality of vertically extending rails 4 attached to the back of the formwork 1 at a distance from each other. These Profile rails 4 are preferably formed in cross-section Z-shaped. With the on the back of the formwork 1 adjacent web 10, they are on the formwork skin. 1 attached. From the edge of the web 10 is a standing vertically to the formwork web 11th From and on the side of the formwork 1 remote end of the web 11 is a parallel to Formwork skin 1 extending bridge 12 from. The distances between adjacent rails 3, 4 are static and can, for example, in the range between 50 cm and 1.5 m.

With the vertical profile rails 3, 4 are horizontally extending shaping Rail 13 detachably connected. The shaping rails 13 are in horizontal Direction curved, causing the curvature of the formwork element in horizontal Direction is given. By changing the curvature of the shaping Rails 13, the curvature of the formwork element can be changed.

The more detailed design of the shaping rails 13 will be described below Fig. 2 to 9 explained. The shaping rails 13 have in the preferred shown Embodiment in each case four strand elements 14, which by means of shoes 15 are held together. The strand elements 14 are preferably plate-shaped formed, so seen in cross-section the shape of a flat Rectangle. These strand elements 14 each extend over a majority of the Longitudinal extent of the shaping rail, but at least for all curvatures the shaping rail 13 except the strongest (in the case of internal formwork) or the least (in the case of an external formwork) for this formwork element provided curvature shorter than the total length of the shaping rail 13. The strand elements 14 are in the longitudinal direction of the shaping Rail 13 offset from each other, namely extending in the arrangement shown the two inner strand elements 14 to that shown in Fig. 2 front end 16 of the shaping rail 13 and the other two strand elements 14 are spaced from this front end 16 by the offset v. At the opposite end face 17 of the shaping rail 13 is the Situation just the opposite (see Fig. 3, with a slightly lower curvature of shaping rail). In the assembly position shown in FIG. 2, this offset is v relatively low. The offset v decreases with decreasing curvature of the shaping Rail 13 too. In contrast, a somewhat larger offset v is shown in FIG.

If all the strand elements 14 without mutual offset v to both frontal Ends of the shaping rail 13 extend, is the strongest (in the case of Inner formwork) or lowest (in the case of an external formwork) for this formwork element provided curvature ago.

The strand elements 14 preferably all have the same length, can but also have different lengths.

The shoes 15 serve as mentioned for holding together the strand elements 14 and Furthermore, to prevent their tilting or twisting around a horizontal, in Longitudinal direction of the forming rail 13 extending (curved) axis. Furthermore, Preferably, the connection of the shaping rail 13 with the vertically extending profile rails 3, 4 on the shoes 15th

In the embodiment according to FIGS. 2 to 7, a respective shoe 15 of two U-shaped clamping parts 18, 19 formed by means of a clamping bolt 20 with each other be tense. The clamping parts 18, 19 each have a base leg 21 and two side legs 22. In the side legs 22 are each two of hers free longitudinal edge 23 except outgoing slots 24, wherein the slots 24 seen in the two side legs 22 in side view (Fig. 6) cover. In the Slits 24 are each two adjacent strand elements 14 with their Margins introduced. In the base leg 21 is a bore 25 in an intermediate the height of the two slots 24 introduced for the passage of the clamping bolt 20. The bore 25 is in this case one side leg 22 closer than the other side legs 22.

One of the two clamping parts 18, 19 is located on the web 6 of the rail 3 or on the bridge 12 of the rail 4 at. In the web 6 and 12 is in this case a with the bore 25th covering hole attached. In the slots 24 of this clamping member 18 are the one Side edges of the strand elements 14 introduced. On the opposite side edges the strand elements 14, the second clamping part 19 is attached. Im shown Embodiment, the second clamping part 19 is the same as the clamping part 18 is formed, but 180 ° about a horizontal axis and 180 ° about a vertical axis used rotated relative to the clamping part 18. By means of the web 6 or 12 and the clamping parts 18, 19 passing through the clamping bolt 20 are the clamping parts 18, 19 braced against each other and attached to the rail 3 and 4 respectively. The clamping bolts 20 are in the illustrated embodiment of screws in combination formed with nuts.

Preferably, at each crossing point between the forming rail 13 and the rails 3, 4, a shoe 15 for holding together and aligning the Strand elements 14 and for fixing the shaping rail 13 to the rails 3, 4 provided. In the two peripheral shoes 15 protrude respectively from this front end 16, 17 spaced strand elements 14 only or more less far and can (with smaller curvatures of the formwork element in Case of internal formwork or larger curves in case of external formwork) even before the peripheral shoe 15 ends. It would also be possible in principle and possible, for this situation, a side shoe with in one or both Provide side legs of the clamping parts 18, 19 formed slots 24, the width of which corresponds only to the thickness of a single strand element 14.

Between the upper adjoining strand elements 14 and the lower adjoining strand elements 14 there is a longitudinal opening 26 of the shaping rail 13. Through this can anchor rod 27 of an anchor extend as shown in Figs. 3 and 4. At the of the formwork 1 facing away from side edges of the strand elements 14 is based on the strand elements 14 spanning anchor plate 28 from. The anchor rod 27 passes through the anchor plate 28 through a hole in the same and has in the region of its end Thread on which a nut 29 is screwed. That way you can the anchored on both sides of the wall to be erected formwork become. The curvature of the to be arranged on the other side of the wall Formwork (not shown in the figures) is the reverse of that shown in FIG Shuttering elements (convex instead of concave). As already mentioned several times can also such a convex curved formwork element in the invention Be formed manner, in which case the offset between the Strand elements increases with increasing curvature.

The connection of several formwork elements to be stacked one above the other can be done in a conventional manner, for example by means of at the bottom of the Formwork element arranged pipe sections 30, which on at the upper end of the lower formwork element mounted pipe sections are placed and with these be screwed by means of bolts. For centering the pipe sections 30 can conical recesses 31 and corresponding frustoconical Projections (not shown in the figures) for engagement in the conical recesses 31 may be provided.

Side by side to be arranged formwork elements can on their edge side Profile rails 3, the webs 5 abut each other, are bolted together, wherein in the webs 5 holes 32 arranged for the passage of bolts are.

To achieve a continuous rigidity of the shaping rails 13 between laterally adjacent formwork elements, the shaping Rails 13 of the adjacent formwork elements also via connection units be connected to each other. A possible education of such Connection unit is shown schematically in Fig. 10. They are two bridge-like ones Claws 33 available. The upper claw 33 lies with feet 34 on the tops of the shaping rails 13 of the adjacent formwork elements and the lower Claw 33 on the bottoms. In the two edge regions of the bridge bridges 35 of Cleats 33 are transverse webs 36 welded to them, which project beyond them on both sides. In the before and behind the bridges bridges 35 areas have the Transverse webs 36 holes, which are penetrated by clamping bolt 37, which brace the two claws 33 together. Left and right are two in each case Fig. 10 successive clamping bolt 37 available. Other forms of training connecting units for the forming rails 13 would also be conceivable and possible.

Conceivable and possible to achieve a continuous rigidity between the side It would also be at adjoining formwork elements, at heights between the shaping rails 13 preferably horizontally extending connecting rails to be applied, which extend over both adjacent formwork elements and with at least one of the profile rails 3, 4 of a respective shuttering element are connected. Preferably, they are in any case with each other with the two adjacent marginal profile rails 3 of the two formwork elements connected. The connecting rails could in this case in an analogous manner as the forming rails 13 and also their connections with the Profile rails 3 and / or 4 could be done in an analogous manner by means of shoes 15.

If the curvature of the formwork element to be changed, so are the Clamping bolt 20 is released, after which the strand elements 14 can be removed. The strand elements 14 are provided with a circulating device (by means of corresponding Rolls) plastically deformed to the desired curvature. Subsequently the shaping rails 13 are reassembled, the strand elements 14 are offset accordingly, and the clamping bolt 20 tightened. in the Area of the two front ends 16, 17 of the forming rails 13 are intended at least the respective up to these front ends 16, 17 extending Strand elements 14 extend through the edge-side shoes 15. The shaping Rail 13 can thereby be connected to the edge profile rails 3.

FIGS. 8 and 9 show a modified embodiment of a clamping part 18 a shoe. The clamping part 18 has a base leg 38 and at both ends the same attached edge leg 39. In the middle area of the base leg 38 side legs 40 are arranged at the two side edges, which are in the side view of FIG. 8 overlap. The slots 24 for inserting the Strand elements 14 are here between the edge legs 39 and the side legs 40 formed.

Another modified embodiment of a clamping part 18 of a shoe is in Figs. 11 and 12 are shown. The clamping member is H-shaped to increase its rigidity formed, with side legs 22 and a connecting leg 41, the the bore 25 has. From the longitudinal edges 23 of the side legs 22 on the one side of the clamping part in turn are slots 24 for receiving the strand elements 14 off.

At the front ends 7, 8, the formwork skin is preferably with an edge protection 42 provided (Fig. 4). This can, for example, from one to the rail 3 welded metal web are formed, which are preferably made of wood Formwork skin 1 is covered on the face side, whereby between this web and the formwork skin 1 may be formed a silicone joint.

Various modifications of the illustrated embodiments of the invention are conceivable and possible without departing from the scope of the invention. So could For example, more or less strand elements 14 may be present. For example it would also be conceivable and possible that the shaping rail 13 of two in the Cross-section U-shaped strand elements 14 is formed, which in the longitudinal direction the shaping rail 13 are offset accordingly. To one To allow clearance for the passage of anchor rods 27, this could also be provided, the two U-shaped strand elements with the free ends their side legs to put together, with the free ends of the side legs partially provided with indentations for the formation of the longitudinal opening are.

Conceivable and possible it would be, the edge profile rails 3 instead of shown U-shaped training in the same manner as the rails 4, so as Z-profiles. The distance from the formwork skin 1 parallel to the formwork skin 1 extending web could then, for example, each from the side edge of the formwork element be pointing the way. The vertically standing to the formwork 1 Bridge would be in the case of Z-shaped design of the rails 4 from the front End 7, 8 of the formwork element distances. The shaping rails 13 can extend beyond this web out to the respective front end 16, 17 and preferably in turn flush with this. To the connection of two laterally adjacent formwork elements could turn arranged at heights between the shaping rails 13 and with the Profile rails 3 and / or 4 connected connecting rails may be present. additionally could at heights between the forming rails 13 and the connecting rails plate-shaped elements at the spaced from the formwork skin 1 and parallel to this extending webs of the adjacent rails 4 be screwed to accommodate acting in a vertical direction shear forces can.

Other than the shown and described U- or Z-shaped configurations of Profile rails 3, 4 would also be conceivable and possible, for example H-shaped.

Legend to the reference numbers:

1

scarf skin

2

scarf surface

3

rail

4

rail

5

web

6

web

7

frontal end

8th

frontal end

9

web

10

web

11

web

12

web

13

shaping rail

14

strand element

15

shoe

16

frontal end

17

frontal end

18

clamping part

19

clamping part

20

clamping bolt

21

base leg

22

side leg

23

longitudinal edge

24

slot

25

drilling

26

longitudinal opening

27

anchor rod

28

anchor plate

29

mother

30

pipe section

31

conical recess

32

well

33

paw

34

foot

35

footbridge

36

crosspiece

37

clamping bolt

38

base leg

39

border legs

40

side leg

41

connecting leg

42

edge protection

Claims (15)

Formwork element of a circular formwork, which has a formwork skin (1), at the rear side vertically extending profile rails (3, 4) are mounted, with which horizontally extending curved shaping rails (13) are detachably connected, characterized in that the forming rails (13) each of at least two, preferably of at least four strand elements (14) are formed, each of which extends over a majority of the longitudinal extent of the forming rail (13) and which are held together by shoes (15), wherein by a curvature-dependent offset (v) between the strand elements (14) extend / extend in the longitudinal direction of the shaping rail (13) in each case at least one, preferably at least two, of the strand elements (14) to the respective front end (16, 17) of the shaping rail (13). Shuttering element according to claim 1, characterized in that the connection of the forming rails (13) with the vertically extending profile rails (3, 4) via the shoes (15), preferably by means of webs (6, 12) of the vertically extending profile rails (3, 4) and the shoes (15) passing through clamping bolt (20), which are preferably designed as screw. Shuttering element according to claim 1 or claim 2, characterized in that a longitudinal opening (26) of the forming rail (13) is bounded above and below by at least two mutually adjoining strand elements (14), of which in each case at least one to the respective end face End (16, 17) of the forming rail (13) extends. Shuttering element according to one of claims 1 to 3, characterized in that the strand elements (14) are plate-shaped. Shuttering element according to one of claims 1 to 4, characterized in that the strand elements (14) have the same lengths. Shuttering element according to one of claims 1 to 5, characterized in that the shoes (15) each comprise two clamping parts (18, 19), wherein the two clamping parts (18, 19) with the strand elements (14) lying between them against each other by means of a clamping bolt (20) are braced. Shuttering element according to claim 6, characterized in that the clamping parts (18, 19) slots (24) for receiving the side edges of the strand elements (14) adjoining sections of the strand elements (14). Shuttering element according to claim 6 or claim 7, characterized in that the clamping parts (18, 19) parallel to the formwork skin (1) arranged base legs (21, 38), in which a bore (25) for the passage of a clamping bolt (20) is arranged , wherein the bore (25) preferably laterally offset in the longitudinal direction of the forming rail (13) relative to the center of the base leg (21, 38). Shuttering element according to one of claims 1 to 8, characterized in that the connecting units (33, 34, 35, 36, 37) for connecting the shaping rails (13) of two laterally adjoining shuttering elements are present. Shuttering element according to claim 9, characterized in that the connecting unit (33, 34, 35, 36, 37) from above and from below against the forming rails by means of clamping bolts (37) braced claws (33). Shuttering element according to one of claims 1 to 10, characterized in that the shuttering element has on both side edges a vertically extending rail (3), which has a flush with the side edge of the formwork skin n (1) final web (5), wherein between the edge side vertically extending profile rails (3) preferably a plurality of vertically extending profile rails (4) are present. Shuttering element according to one of claims 1 to 11, characterized in that per shuttering element at least two vertically spaced apart horizontally extending forming rails (13) are present. Shuttering element according to one of claims 1 to 12, characterized in that in the case of an internal formwork at all curvatures except the strongest intended for this formwork element curvature or in the case of an external formwork at all curvatures except for this formwork element smallest curvature of at least one, preferably at least two of the strand elements (14) from the front end (16, 17) of the forming rail (13) is spaced / are. Shuttering element according to one of claims 1 to 13, characterized in that for the connection of laterally adjoining shuttering elements at heights between the shaping rails (13) arranged, preferably horizontally extending, connecting rails are present, which extend at least over edge regions of the adjoining shuttering elements and are connected to at least one profiled rail (3, 4) of a respective formwork element. Shuttering element according to claim 14, characterized in that the connecting rails are formed in an analogous manner as the shaping rails (13) of at least two, preferably of at least 4 over a large part of the longitudinal extent of the connecting rail extending strand elements (14) and by means of shoes (15 ) are attached to the rails (3, 4) of the formwork elements.

Images