EP0352566B1 - Construction system - Google Patents

Construction system Download PDF

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Publication number
EP0352566B1
EP0352566B1 EP89112911A EP89112911A EP0352566B1 EP 0352566 B1 EP0352566 B1 EP 0352566B1 EP 89112911 A EP89112911 A EP 89112911A EP 89112911 A EP89112911 A EP 89112911A EP 0352566 B1 EP0352566 B1 EP 0352566B1
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EP
European Patent Office
Prior art keywords
beams
concrete
holes
irons
slab
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.)
Expired - Lifetime
Application number
EP89112911A
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German (de)
French (fr)
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EP0352566A1 (en
Inventor
Robert Haldi
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Individual
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Individual
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Publication date
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Priority to AT89112911T priority Critical patent/ATE70876T1/en
Publication of EP0352566A1 publication Critical patent/EP0352566A1/en
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Publication of EP0352566B1 publication Critical patent/EP0352566B1/en
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Expired - Lifetime legal-status Critical Current

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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
    • E04B5/16—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
    • 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
    • E04B5/12—Load-carrying floor structures formed substantially of prefabricated units with wooden beams
    • 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
    • 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
    • E04B2005/237—Separate connecting elements

Definitions

  • the present invention relates to a construction work comprising a wooden beam associated with a reinforced concrete slab.
  • the object of the present invention is to provide an improved solution to this problem of anchoring and reinforcing the slab.
  • each beam of said beam has a series of transverse holes with a diameter of the order of several centimeters, crossed by the concrete of the slab, which forms anchor cores therein ensuring the connection between the beams and the slab, these holes being crossed each by two irons serving as a reinforcement for said cores, one of these irons projecting widely on either side of the beam while the other is curved in the shape of a stirrup.
  • the structure shown comprises a slab 1, made of reinforced concrete, the reinforcement possibly being a trellis, said reinforced concrete resting on a beam formed of wooden beams 2.
  • Each beam 2 has a main body 2 a , of rectangular section, surmounted by a narrower part 2b , which is pierced with through holes 3, transverse, the axis of which is parallel to the plane of the slab.
  • the holes 3 are of a diameter of several centimeters, 60 mm for example, so that the concrete of the slab 1 penetrates there and forms, inside the said holes, cores which ensure the connection between the beams and the slab of concrete, the beams thus constituting reinforcing bars of the slab.
  • the holes 3 of the beams 2 are located opposite each other, which makes it possible to engage, in addition to the stirrups 4, straight reinforcing bars 5 which pass through several beams.
  • Such irons 5 may extend over the entire width of the slab and thus form stiffening ribs thereof.
  • Shoulders 6 are provided on the upper face of the body 2 has beams 2, on either side of the parts 2 b of each of these. These shoulders serve to receive wooden boards 7, juxtaposed, forming shuttering elements supporting the slab when the latter is poured. These formwork elements remain visible under the finished work so that it, seen from below, thanks to the visible parts 2 has beams 2, has the appearance of a usual beam formed of beams on which a floor rests.
  • the beams can be made of assembled wood, for example by gluing, which is cheaper than monolithic beams and allows the use of second choice wood while limiting the risk of concentration of defects such as those that constitute the knots of wood. .

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

The concrete slab (1) rests, by means of small shuttering boards (7) which remain visible when the construction is completed, on shoulders (6) presented by the beams (2), provided on either side of a narrow portion (2b) of each of the said beams surmounting the main body (2a) of the latter. The portions (2b) are perforated with transverse holes (3) which pass right through and have a diameter which is sufficient for the concrete to penetrate therein and to form sprues therein which provide the join between the said beams and the slab (1), in such a manner that the beams form reinforcement tie rods for the slab and such that the shearing forces are thus absorbed. The concrete sprues passing through the holes (3) are reinforced by metal rods (4) folded into the form of clamps and by straight metal rods (5) extending over the entire length of the slab, passing through all of the construction beams in succession. <IMAGE>

Description

La présente invention a pour objet un ouvrage de construction comprenant une poutraison en bois associée à une dalle de béton armé.The present invention relates to a construction work comprising a wooden beam associated with a reinforced concrete slab.

De tels ouvrages composites sont connus en soi, étant décrits par exemple dans le brevet suisse CH-A-658.281, du même titulaire, et dans le brevet français FR-A-901.600.Such composite works are known per se, being described for example in the Swiss patent CH-A-658,281, by the same owner, and in the French patent FR-A-901,600.

L'une des difficultés que présente la réalisation de tels ouvrages composites réside dans la liaison qu'il faut assurer entre la dalle de béton et les poutres, en particulier la liaison longidutinale.One of the difficulties which the realization of such composite works presents resides in the connection which it is necessary to ensure between the concrete slab and the beams, in particular the longidutinal connection.

Ce problème a été résolu, dans le cas du brevet suisse CH-A-658.281, à l'aide de creusures ménagées dans les poutres, dans lesquelles pénètre le béton, ce qui n'est pas totalement satisfaisant du fait qu'il n'y a pas de continuité transversale qui soit assurée dans le béton au niveau des poutres.This problem has been solved, in the case of Swiss patent CH-A-658,281, by means of recesses made in the beams, into which the concrete penetrates, which is not entirely satisfactory since it does not there is no transverse continuity which is ensured in the concrete at the level of the beams.

Dans le cas de la construction décrite et représentée dans le brevet FR-A-901.600, les poutres sont percées de trous de petit diamètre dans lesquels sont engagés, sans jeu appréciable, des fers à béton faisant saillie de part et d'autre des poutres et qui assurent l'ancrage. Les efforts tranchants sont entièrement absorbés par ces fers qui sollicitent ainsi très fortement le bois.In the case of the construction described and shown in patent FR-A-901,600, the beams are pierced with holes of small diameter in which are engaged, without appreciable play, concrete irons projecting on either side of the beams and which anchor. The shearing forces are fully absorbed by these irons, which place very heavy demands on the wood.

Le but de la présente invention est de fournir une solution améliorée à ce problème d'ancrage et d'armature de la dalle.The object of the present invention is to provide an improved solution to this problem of anchoring and reinforcing the slab.

A cet effet, l'ouvrage de construction suivant l'invention est caractérisé par le fait que chaque poutre de ladite poutraison présente une suite de trous transversaux d'un diamètre de l'ordre de plusieurs centimètres, traversés par le béton de la dalle, qui y forme des carottes d'ancrage assurant la liaison entre les poutres et la dalle, ces trous étant traversés chacun de deux fers servant d'armature auxdites carottes, l'un de ces fers débordant largement de part et d'autre de la poutre alors que l'autre est recourbé en forme d'étrier.To this end, the construction work according to the invention is characterized in that each beam of said beam has a series of transverse holes with a diameter of the order of several centimeters, crossed by the concrete of the slab, which forms anchor cores therein ensuring the connection between the beams and the slab, these holes being crossed each by two irons serving as a reinforcement for said cores, one of these irons projecting widely on either side of the beam while the other is curved in the shape of a stirrup.

Il est à remarquer qu'on connaît (voir brevet CH-A-422.276) une construction dans laquelle une dalle de béton enrobe partiellement des poutrelles percées de trous traversés par des fers, le diamètre de ces trous étant tel qu'il n'interdit pas que, le cas échéant, du béton de la dalle y pénètre. Cependant, dans cette construction, les poutrelles ne sont pas portantes, ne constituant que des éléments d'un coffrage perdu, les fers traversants ne servant pas au raidissement de la dalle, lequel est assuré par des fers perpendiculaires aux premiers reposant sur les ailes desdites poutres.It should be noted that there is known (see patent CH-A-422,276) a construction in which a concrete slab partially covers beams pierced with holes crossed by irons, the diameter of these holes being such that it does not prohibit not that, if necessary, concrete from the slab enters it. However, in this construction, the beams are not load-bearing, constituting only elements of a lost formwork, the through bars not serving to stiffen the slab, which is provided by irons perpendicular to the first ones resting on the wings of said beams.

Le dessin représente, à titre d'exemple, une forme d'exécution de l'objet de l'invention.

  • La fig. 1 est une vue en perspective d'un ouvrage de construction, certaines parties étant arrachées.
  • La fig. 2 en est une coupe transversale, à plus grande échelle, et
  • La fig. 3 en est une vue en plan, à l'échelle de la fig 2.
The drawing represents, by way of example, an embodiment of the subject of the invention.
  • Fig. 1 is a perspective view of a construction work, certain parts being torn off.
  • Fig. 2 is a cross section thereof, on a larger scale, and
  • Fig. 3 is a plan view thereof, on the scale of FIG. 2.

L'ouvrage représenté comprend une dalle 1, faite de béton armé, l'armature pouvant le cas échéant être un treillis, ledit béton armé reposant sur une poutraison formée de poutres en bois 2. Chaque poutre 2 présente un corps principal 2a, de section rectangulaire, surmonté d'une partie 2b, plus étroite, laquelle est percée de trous traversants 3, transversaux, dont l'axe est parallèle au plan de la dalle.The structure shown comprises a slab 1, made of reinforced concrete, the reinforcement possibly being a trellis, said reinforced concrete resting on a beam formed of wooden beams 2. Each beam 2 has a main body 2 a , of rectangular section, surmounted by a narrower part 2b , which is pierced with through holes 3, transverse, the axis of which is parallel to the plane of the slab.

Les trous 3 sont d'un diamètre de plusieurs centimètres, 60 mm par exemple, de façon que le béton de la dalle 1 y pénètre et forme, à l'intérieur desdits trous, des carottes qui assurent la liaison entre les poutres et la dalle de béton, les poutres constituant ainsi des tirants d'armature de la dalle.The holes 3 are of a diameter of several centimeters, 60 mm for example, so that the concrete of the slab 1 penetrates there and forms, inside the said holes, cores which ensure the connection between the beams and the slab of concrete, the beams thus constituting reinforcing bars of the slab.

Afin de renforcer les carottes de béton traversant les trous 3 des poutres, des fers à béton 4 de 8 mm, pliés en forme d'étriers, sont engagés dans lesdits trous. Les branches des étriers 4 seront orientées en fonction de la direction des efforts tranchants que doit subir l'ouvrage.In order to reinforce the concrete cores crossing the holes 3 of the beams, concrete irons 4 of 8 mm, bent in the shape of stirrups, are engaged in said holes. The branches of the stirrups 4 will be oriented as a function of the direction of the shearing forces which the structure must undergo.

Dans l'exemple représenté, les trous 3 des poutres 2 sont situés en regard les uns des autres, ce qui permet d'y engager, outre les étriers 4, des fers d'armature rectilignes 5 qui traversent plusieurs poutres. De tels fers 5 pourront s'étendre sur toute la largeur de la dalle et former ainsi des nervures de raidissement de celle-ci.In the example shown, the holes 3 of the beams 2 are located opposite each other, which makes it possible to engage, in addition to the stirrups 4, straight reinforcing bars 5 which pass through several beams. Such irons 5 may extend over the entire width of the slab and thus form stiffening ribs thereof.

Des épaulements 6 sont ménagés sur la face supérieure des corps 2a des poutres 2, de part et d'autre des parties 2b de chacune de celles-ci. Ces épaulements servent à recevoir des planchettes de bois 7, juxtaposées, formant des éléments de coffrage soutenant la dalle lorsque celle-ci est coulée. Ces éléments de coffrage restent apparents sous l'ouvrage terminé de sorte que celui-ci, vu de dessous, grâce aux parties apparentes 2a des poutres 2, a l'apparence d'une poutraison usuelle formée de poutres sur lesquelles repose un plancher.Shoulders 6 are provided on the upper face of the body 2 has beams 2, on either side of the parts 2 b of each of these. These shoulders serve to receive wooden boards 7, juxtaposed, forming shuttering elements supporting the slab when the latter is poured. These formwork elements remain visible under the finished work so that it, seen from below, thanks to the visible parts 2 has beams 2, has the appearance of a usual beam formed of beams on which a floor rests.

Il est à remarquer que l'on pourra interposer une couche de matériau léger tel que du matériau connu sur le marché sous le nom de "SAGEX" (marque déposée) entre la dalle de béton et les éléments de coffrage, servant d'isolant.It should be noted that it is possible to interpose a layer of light material such as material known on the market under the name of "SAGEX" (registered trademark) between the concrete slab and the formwork elements, serving as insulation.

Grâce à la présente disposition, la liaison entre les poutres et le béton n'est pas assurée par des pièces mécaniques mais par une interpénétration du béton et des poutres, en un effet que l'on pourrait appeler de "couplage géométrique".Thanks to this arrangement, the connection between the beams and the concrete is not ensured by mechanical parts but by an interpenetration of the concrete and the beams, in an effect that could be called "geometric coupling".

Les poutres pourront être réalisées en bois assemblé, par exemple par collage, ce qui est meilleur marché que les poutres monolithiques et permet l'emploi de bois de second choix tout en limitant les risques de concentration de défauts tels ceux que constituent les noeuds du bois.The beams can be made of assembled wood, for example by gluing, which is cheaper than monolithic beams and allows the use of second choice wood while limiting the risk of concentration of defects such as those that constitute the knots of wood. .

Claims (4)

1. Construction system comprising a framework of beams made of wood associated to a ferro-concrete flooring (1), characterized by the fact that each beam (2) of the said framework constitutes an armature tie of the flooring (1) and is provided with a series of transversal holes (3) of a diameter of the order of several centimeters, traversed by the concrete of the flooring (1), which forms therein anchoring cores producing the connection between the beams (2) and the flooring (1), these holes (3) being traversed each by two irons (4, 5) serving as armature to the said cores, one (5) of these irons extending largely beyond both sides of the beam (2) while the other (4) is curved to have the shape of a stirrup.
2. System according to claim 1, characterized by the fact that the irons (5) which traverse the said holes (3) and go largely beyond the beam (2) are straight irons, the holes (3) of the several beams (2) of the framework being in alignment one with each other so that the said straight irons (5) traverse several beams (2) successively.
3. System according to claim 1, characterized by the fact that the said beams (2) are profiled in such a way as to constitute two bearing surfaces (6) on which bear plank elements (7) which remain apparent under the system once ended, which absorb the weight of the flooring (1) before the pouring of the concrete.
4. System according to claim 3, characterized by the fact that the said beams (2) show a main body (2a) surmounted with a narrower portion (2b), the shoulders (6) provided between the narrower portion (2b) and the main body (2a) constituting the said bearing surfaces, the whole in such a way that the main body (2a) of the beams (2) remains apparent, as well as the plank element (7) so that the system, viewed from underneath, has the appearance of a conventional framework of beams constituted by beams between which appears a floor.
EP89112911A 1988-07-28 1989-07-14 Construction system Expired - Lifetime EP0352566B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89112911T ATE70876T1 (en) 1988-07-28 1989-07-14 CONSTRUCTION SYSTEM.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2874/88A CH677122A5 (en) 1988-07-28 1988-07-28
CH2874/88 1988-07-28

Publications (2)

Publication Number Publication Date
EP0352566A1 EP0352566A1 (en) 1990-01-31
EP0352566B1 true EP0352566B1 (en) 1991-12-27

Family

ID=4243514

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89112911A Expired - Lifetime EP0352566B1 (en) 1988-07-28 1989-07-14 Construction system

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EP (1) EP0352566B1 (en)
AT (1) ATE70876T1 (en)
CH (1) CH677122A5 (en)
DE (1) DE68900603D1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH687397A5 (en) 1992-11-14 1996-11-29 Bettex Fabienne Wood-concrete composite floor.
DE4415906A1 (en) * 1994-05-06 1995-11-23 Michael Schellheimer Timber frame construction for house
FR2760478A1 (en) * 1997-03-06 1998-09-11 Francois Aubert BEAM-TYPE CONSTRUCTION ELEMENT
DE19818525B4 (en) * 1998-04-24 2004-11-25 Bauer, Werner, Dipl.-Ing. Wood-concrete composite member
AT505266B1 (en) 2007-05-15 2010-11-15 Univ Innsbruck BEARING ELEMENT, BEEGTRÄGERANORDNUNG AND METHOD FOR THE PRODUCTION
EP2072705A1 (en) * 2007-12-21 2009-06-24 Renggli AG Wood-concrete composite element
US20180347191A1 (en) * 2017-06-01 2018-12-06 9360-4742 Quebec Inc. Prefabricated concrete slab floor and method of fabricating the same
AT520303B1 (en) 2018-02-13 2019-03-15 Engelhart Klaus Dipl Ing Method for producing composite ceilings
FR3131339A1 (en) * 2021-12-24 2023-06-30 Ingenova Composite floor type construction work

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR901600A (en) * 1900-01-01
US2035296A (en) * 1934-02-10 1936-03-24 Burbank Clement Everett Concrete floor and ceiling construction
GB681421A (en) * 1947-03-18 1952-10-22 Anders Bernhard Nilsson Improvements relating to concrete flooring
CH422276A (en) * 1964-06-25 1966-10-15 Pugin Willy Construction element for reinforced concrete slab
CH658281A5 (en) * 1984-08-02 1986-10-31 Robert Haldi CONSTRUCTION WORK.
CH663980A5 (en) * 1987-03-25 1988-01-29 Naef Ag Geb Wooden plank to form member of load-bearing floor - consists of superimposed boards, rigidly connected by adhesive, pref. with convex set against load

Also Published As

Publication number Publication date
ATE70876T1 (en) 1992-01-15
CH677122A5 (en) 1991-04-15
EP0352566A1 (en) 1990-01-31
DE68900603D1 (en) 1992-02-06

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