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EP3868970B1 - Vorgefertigte verbundplatte, insbesondere für den decken- oder wandbau, und entsprechendes herstellungsverfahren - Google Patents

Vorgefertigte verbundplatte, insbesondere für den decken- oder wandbau, und entsprechendes herstellungsverfahren Download PDF

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Publication number
EP3868970B1
EP3868970B1 EP21158505.4A EP21158505A EP3868970B1 EP 3868970 B1 EP3868970 B1 EP 3868970B1 EP 21158505 A EP21158505 A EP 21158505A EP 3868970 B1 EP3868970 B1 EP 3868970B1
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EP
European Patent Office
Prior art keywords
profile
concrete plate
inner face
slab
end portion
Prior art date
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Application number
EP21158505.4A
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English (en)
French (fr)
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EP3868970A1 (de
EP3868970C0 (de
Inventor
Quentin KLEINDIENST
Jean-Bernard DERREY
Philippe Roux
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Apb2
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Apb2
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Publication of EP3868970C0 publication Critical patent/EP3868970C0/de
Publication of EP3868970B1 publication Critical patent/EP3868970B1/de
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17—Floor structures partly formed in situ
    • E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
    • E04B2005/232—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated with special provisions for connecting wooden stiffening ribs or other wooden beam-like formations to the concrete slab
    • E04B2005/235—Wooden stiffening ribs or other wooden beam-like formations having a special form
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17—Floor structures partly formed in situ
    • E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated

Definitions

  • the present invention relates to a prefabricated composite slab for the construction in particular of floors or walls, comprising a wooden frame formed of a plurality of beams and a concrete plate connected to said frame by assembly means, said beams and said concrete slab having an inner face and an outer face, while the assembly means comprise on the one hand a plurality of substantially "I" profiles made of wood or a material derived from wood, having two lateral faces opposite and four longitudinal faces two by two opposite, and on the other hand means for gluing each profile to the internal face of a beam, the internal face of the concrete slab comprising a plurality of grooves extending parallel to each other , designed capable of accommodating a first end portion of a profile, with an axis parallel to the axis of the profile.
  • the invention also relates to a method for manufacturing such a slab.
  • composite slabs are used in the construction of all types of buildings and can be integrated into residential buildings or buildings for professional use, regardless of the nature of the primary structure or which they are designed to create horizontal, vertical or inclined structures.
  • mixed wood-concrete slabs are renowned for their excellent sound and heat insulation properties and have the advantage of offering good fire resistance allowing them to define an effective screen for the direct propagation of a possible fire from one area of a building to another.
  • the traditional solution consists of pouring concrete directly on wooden beams already installed at site level, then mechanically linking the two materials by means of connectors of variable geometries, types and fixing methods, which will end up integrated into the thickness of the the slab.
  • the second method currently commonly used to manufacture mixed wood-concrete slabs consists of using prefabricated elements, assembled directly on site or in the workshop and then transported to their place of installation.
  • This technique advantageously allows an assembly speed equivalent to that of structures made entirely of wood, and eliminates the problems of shoring and moisture absorption of the wood mentioned above.
  • the use of prefabricated elements guarantees the obtaining of standard products, perfectly calibrated and controlled in terms of mechanical properties, easier to integrate into the design of buildings.
  • the on-site assembly of prefabricated elements in the factory also allows better technical control of manufacturing.
  • the industrialization of manufacturing processes makes it possible to guarantee a level of quality and to push the level of finish of the elements, while reducing costs.
  • the use of prefabrication also has the advantage of being able to overcome any bad weather on site.
  • the connectors used must have special properties, allowing them in particular to ensure the most rigid connection possible between the wood and the concrete, so as to limit slippage between the two materials, and thus guarantee a good composite action of the floor.
  • the object of the present invention is to propose a solution making it possible to overcome all the drawbacks mentioned above, in order to promote the commercial development of mixed wood-concrete slabs. To this end, it aims more particularly to remedy the drawbacks inherent in prefabricated products, through a assembly method easy to implement, which is based on simple structural means while guaranteeing the preservation of the properties linked to the composite nature of the slab.
  • Another object is to propose a mixed wood-concrete slab, designed to be used both in a horizontal position to make floors, and in a vertical or inclined position to make partition walls, load-bearing exterior walls, cages of elevators or stairs, etc.
  • the present invention relates to a slab of the kind indicated in the preamble, characterized in that at least the first end portion of the profile has two chamfers, symmetrical with respect to the axis of the profile, and each extending between two adjacent longitudinal faces of the profile and in that the assembly means also comprise means for gluing each profile to the internal face of the concrete slab.
  • the beams each to have on their internal face a groove of a shape complementary to a second end portion of a profile, with an axis parallel to the axis of the profile, and opposite to the first end portion.
  • such a groove preferably has a depth extending over at least 1/3 of the height of the beam.
  • the bonding means are for their part preferably chosen from the group comprising a two-component epoxy resin adhesive and a polyurethane adhesive.
  • mechanical assembly means may also be provided to fix the sections to the concrete plate and to the plurality of beams in addition to the assembly means by gluing.
  • the invention also relates to a method for manufacturing a slab as described above, in which a concrete slab is manufactured by molding having an internal face and an external face and said concrete slab is connected by means assembly to a wooden frame formed of a plurality of beams having an internal face and an external face, characterized in that a plurality of substantially "I" profiles are used as assembly means, made of wood or a material derived from wood, and in that each profile is glued on the one hand to the internal face of the concrete slab and on the other hand to the internal face of each of the beams.
  • the step of manufacturing the plurality of grooves can be carried out either by machining the concrete slab previously manufactured by molding, or concomitantly with the manufacturing by molding of the concrete slab, using a mold of appropriate form.
  • a step is then preferably provided in which to manufacture the slab according to the invention, the first end portion of a profile is respectively housed and fixed by gluing in a groove of the concrete plate and the second end portion in the groove of a beam.
  • the present invention relates to a prefabricated mixed slab 1 for the construction in particular of floors or walls, comprising a wooden frame 2 formed of a plurality of beams 3 and a concrete plate 4 connected to said frame 2 by assembly means.
  • the beams 3 and the plate 4 have an internal face 30, 40 facing each other and an external face 31, 41 which constitute the external faces of the slab 1.
  • the assembly means comprise a plurality of profiles 5, of axis X, substantially "I", made of wood or a material derived from wood, for example plywood or any equivalent material, having two opposite lateral faces 6, perpendicular to the X axis, and four opposite longitudinal faces two by two, parallel to the X axis. More precisely, the latter comprise upper 7 and lower 8 opposite faces and left opposite faces 9 and right 10.
  • each profile 5 has two chamfers 11, symmetrical with respect to the axis X, and connecting the upper face 7 with respectively the left face 9 and the right face 10.
  • the two chamfers 11 and the upper face 7 of the profile together form a first end portion 12 of profile 5, of which a second end portion 13 comprises the lower face 8 and the respective lower end zones of the left 9 and right 10 faces.
  • the first and second end portions 12, 13 extend along an axis parallel to the axis X of the profile 5.
  • each beam 3 is provided with a longitudinal groove 15, formed on its internal face 30, designed to accommodate the second end portion 13 of a profile 5.
  • the grooves 14 are preferably obtained during manufacture by molding of the concrete slab 4, but can also result from subsequent machining of the latter which has been dried beforehand.
  • the grooves 15 are obtained by suitable machining of the beams 3.
  • the composite slab illustrated in the figures has a width of approximately 1.2 m. It consists of a concrete plate 4 with a thickness e of approximately 70 mm, each groove 14 of which has a depth p substantially equal to 25 mm. Furthermore, each beam 3 of the wooden frame 2 has a height h of about 30 mm and a width l of about 100 mm, while the groove 15 with which it is provided has a depth p1 substantially equal to 5 mm. It should also be noted that each groove 14 has opposed inclined walls 16 forming an angle ⁇ of between 85° and 95°, preferably 94°, with the internal face 40 of the plate 4 of concrete. This angle ⁇ corresponds to the angle of inclination of the chamfers 11 that each profile 5 comprises. Of course, these values are only given by way of non-limiting example. In practice, the composite slab according to the invention and its constituent elements can of course have any other dimensions, specifically adapted to the applications and to the needs of the corresponding construction sites.
  • the sections 5 make it possible to connect the concrete plate 4 to the beams 3 of the wooden frame 2.
  • the first and second end portions 12, 13 of each section 5 are respectively inserted into a groove 14 of the plate 4 and the groove 15 of a beam 3. They are fixed in their respective housings by means of an adhesive, for example of the polyurethane type or of the two-component epoxy resin type allowing the time to achieve the assembly characteristics required by the standards in force in the field of construction, and to guarantee a total absence of slippage between the wood of the sections 5 and the concrete of the plate 4.
  • an adhesive for example of the polyurethane type or of the two-component epoxy resin type
  • the second end portion 13 of the profile 5 intended to interact with the groove 15 of a beam 3, has a structure to further strengthen the bond by gluing.
  • a variant embodiment is for example envisaged in which the second end portion 13 of the profile has a structure similar to that of the first end portion 12.
  • the second end portion also has two chamfers then extending respectively between the faces 8 and 10 and the faces 8 and 9 (cf. fig. 4 ), the groove 15 then being shaped in a corresponding manner.
  • the lower face 8 of the profile 5 can be shaped so as to include a series of teeth extending parallel to each other over its entire length (cf. fig. 5 ).

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Panels For Use In Building Construction (AREA)

Claims (11)

  1. Vorgefertigte Verbundplatte (1) für den Bau insbesondere von Böden oder Wänden, die ein Holzgerippe (2), das aus einer Vielzahl von Tragebalken (3) gebildet ist, und eine Betonscheibe (4) aufweist, die durch Montagemittel mit dem Gerippe (2) verbunden ist, wobei die Tragebalken (3) und die Betonscheibe (4) eine Innenfläche (30, 40) und eine Außenfläche (31, 41) vorweisen, während die Montagemittel einerseits eine Vielzahl von im Wesentlichen "I"-förmigen Profilen (5), die aus Holz oder einem aus Holz gewonnenen Material ausgebildet sind, die zwei gegenüberliegende Seitenflächen (6) und vier Längsflächen (7, 8, 9, 10) vorweisen, zwei und zwei gegenüberliegend, und andererseits Mittel zum Verkleben jedes Profils (5) an der Innenfläche (30) eines Tragebalkens (3) aufweisen, wobei die Innenfläche (40) der Betonscheibe (4) eine Vielzahl von sich parallel zueinander erstreckenden Nuten (14) aufweist, die zum Aufnehmen eines ersten Endabschnitts (12) eines Profils (5) geeignet ausgelegt sind, mit einer Achse parallel zu der Achse (X) des Profils (5), dadurch gekennzeichnet, dass mindestens der erste Endabschnitt (12) des Profils (5) zwei Fasen (11) aufweist, symmetrisch relativ zu der Achse (X) des Profils (5), und die sich jeweils zwischen zwei an das Profil (5) angrenzenden Längsflächen (7, 9, 7, 10) erstrecken, und dass die Montagemittel auch Mittel zum Verkleben jedes Profils (5) an der Innenfläche (40) der Betonscheibe (4) aufweisen.
  2. Platte (1) nach Anspruch 1, dadurch gekennzeichnet, dass die Tragebalken (3) jeweils auf ihrer Innenfläche (30) eine in ihrer Form zu einem zweiten Endabschnitt (13) eines Profils (5) angepasste Hohlkehle (15) vorweisen, mit der Achse parallel zu der Achse (X) des Profils (5), und gegenüber dem ersten Endabschnitt (12).
  3. Platte (1) nach Anspruch 2, dadurch gekennzeichnet, dass die Hohlkehle (15) eine Tiefe p1 vorweist, die sich über mindestens 1/3 der Höhe h des Tragebalkens (3) erstreckt.
  4. Platte (1) nach einem der vorstehenden Ansprüche,
    dadurch gekennzeichnet, dass die Klebemittel aus der Gruppe umfassend einen Zweikomponenten-Epoxidharzkleber und einen Polyurethankleber ausgewählt sind.
  5. Platte (1) nach einem der vorstehenden Ansprüche,
    dadurch gekennzeichnet, dass die Montagemittel ferner mechanische Montagemittel aufweisen.
  6. Verfahren zum Fertigen einer Platte (1) nach einem der Ansprüche 1 bis 5, bei dem eine Betonscheibe (4) durch Formguss gefertigt wird, die eine Innenfläche (40) und eine Außenfläche (41) vorweist, und die Betonscheibe (4) durch Montagemittel mit einem Holzgerippe (2) verbunden wird, das aus einer Vielzahl von Tragebalken (3) gebildet ist, die eine Innenfläche (30) und eine Außenfläche (31) aufweisen, dadurch gekennzeichnet, dass als Montagemittel eine Vielzahl von im Wesentlichen "I"-förmigen Profilen (5), ausgebildet aus Holz oder einem aus Holz gewonnenen Material, verwendet werden, und jedes Profil (5) einerseits an der Innenfläche (40) der Betonscheibe (4) und andererseits an der Innenfläche (30) jedes der Tragebalken (3) verklebt wird.
  7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass eine Vielzahl von Nuten (14) in der Innenfläche (40) der Betonscheibe (4) vorgesehen ist, die sich parallel zueinander erstrecken, die geeignet ausgelegt sind, um einen ersten Endabschnitt (12) eines Profils (5) aufzunehmen, mit der Achse parallel zu der Achse (X) des Profils (5), und dass in der Innenfläche (30) jedes der Tragebalken (3) eine Hohlkehle (15) vorgesehen ist, die geeignet ausgelegt ist, um einen zweiten Abschnitt (13) des Profils (3), gegenüber dem ersten Abschnitt (12), aufzunehmen.
  8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass bei dem Schritt des Fertigens der Betonscheibe (4) durch Formguss eine Gussform verwendet wird, die es ermöglicht, die Vielzahl von Nuten (14) gleichzeitig auszubilden.
  9. Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass die Vielzahl von Nuten (14) durch maschinelle Verarbeitung der zuvor durch Formguss gefertigten Betonscheibe (4) ausgebildet wird.
  10. Verfahren nach einem der Ansprüche 7 bis 9,
    dadurch gekennzeichnet, dass Profile (5) verwendet werden, von denen mindestens der erste Endabschnitt (12) zwei Fasen (11) aufweist, symmetrisch relativ zu der Achse (X) des Profils (5), und die sich jeweils zwischen zwei angrenzenden Längsflächen (7, 9 und 7, 10) des Profils (5) erstrecken.
  11. Verfahren nach einem der Ansprüche 7 bis 10,
    dadurch gekennzeichnet, dass zum Montieren der Betonplatte (4) mit der Vielzahl von Tragebalken (3) der erste Endabschnitt (12) eines Profils (5) in einer Nut (14) der Betonscheibe (4) und der zweite Endabschnitt (13) in der Hohlkehle (15) eines Tragebalkens (3) aufgenommen und befestigt werden.
EP21158505.4A 2020-02-21 2021-02-22 Vorgefertigte verbundplatte, insbesondere für den decken- oder wandbau, und entsprechendes herstellungsverfahren Active EP3868970B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2001721A FR3107539B1 (fr) 2020-02-21 2020-02-21 Dalle mixte préfabriquée pour la construction notamment de planchers ou de murs et procédé de fabrication

Publications (3)

Publication Number Publication Date
EP3868970A1 EP3868970A1 (de) 2021-08-25
EP3868970C0 EP3868970C0 (de) 2023-07-12
EP3868970B1 true EP3868970B1 (de) 2023-07-12

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EP21158505.4A Active EP3868970B1 (de) 2020-02-21 2021-02-22 Vorgefertigte verbundplatte, insbesondere für den decken- oder wandbau, und entsprechendes herstellungsverfahren

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EP (1) EP3868970B1 (de)
FR (1) FR3107539B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT18497U1 (de) * 2023-10-03 2025-06-15 X Fix Wood Connector Gmbh Stab und Bauelement mit solchen Stäben

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4273341A1 (de) * 2022-05-03 2023-11-08 B. Lütkenhaus GmbH Wand-, decken- oder dachelement mit knaggen
DE102022119756A1 (de) * 2022-08-05 2024-02-08 Fischerwerke Gmbh & Co. Kg Holz-Beton-Verbundelement und Verfahren zu seiner Herstellung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2584758A1 (fr) 1985-07-12 1987-01-16 Girard Michel Profile metallique pour element prefabrique en beton a ossature de bois et procede d'utilisation
WO2007091899A1 (en) * 2006-02-10 2007-08-16 Combino As Elements/slabs based on solid wood elements reinforced with concrete
AT505266B1 (de) * 2007-05-15 2010-11-15 Univ Innsbruck Trägerelement, stegträgeranordnung und verfahren zu deren herstellung
EP2072705A1 (de) * 2007-12-21 2009-06-24 Renggli AG Holz-Beton-Verbundelement
FR2958574B1 (fr) 2010-04-13 2012-05-04 Macc3 Procede de realisation de panneaux de construction prefabriques a collaboration bois-beton et panneaux obtenus par ce procede
DE102013104108A1 (de) * 2013-04-23 2014-11-06 Stephan Holzbau GmbH Auflagerkonstruktion zur Spiegellagerung einer auf Holzbalken gelagerten Betonplatte in Holz-Beton-Verbundbauweise
DE102017119096A1 (de) * 2017-08-21 2019-02-21 Deutsches Zentrum für Luft- und Raumfahrt e.V. Holz-Beton-Verbunddecke

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT18497U1 (de) * 2023-10-03 2025-06-15 X Fix Wood Connector Gmbh Stab und Bauelement mit solchen Stäben

Also Published As

Publication number Publication date
EP3868970A1 (de) 2021-08-25
FR3107539A1 (fr) 2021-08-27
EP3868970C0 (de) 2023-07-12
FR3107539B1 (fr) 2023-01-06

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