EP0768438A1 - Sheet metal strip for interconnecting building elements - Google Patents

Sheet metal strip for interconnecting building elements Download PDF

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Publication number
EP0768438A1
EP0768438A1 EP95402300A EP95402300A EP0768438A1 EP 0768438 A1 EP0768438 A1 EP 0768438A1 EP 95402300 A EP95402300 A EP 95402300A EP 95402300 A EP95402300 A EP 95402300A EP 0768438 A1 EP0768438 A1 EP 0768438A1
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EP
European Patent Office
Prior art keywords
sheet metal
wood
strip
tooth
metal strip
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.)
Granted
Application number
EP95402300A
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German (de)
French (fr)
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EP0768438B1 (en
Inventor
Daniel Gauthier
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Individual
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Individual
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Priority to DE69517980T priority Critical patent/DE69517980D1/en
Priority to EP95402300A priority patent/EP0768438B1/en
Priority to AT95402300T priority patent/ATE194677T1/en
Publication of EP0768438A1 publication Critical patent/EP0768438A1/en
Application granted granted Critical
Publication of EP0768438B1 publication Critical patent/EP0768438B1/en
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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
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E04C3/292—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being wood and metal
    • 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 strip of metal sheet intended to form a connection between two construction elements such as footings or plates, at least one of these elements being of wood, said strip of metal sheet comprising on at least one edge of the anchoring projections provided with teeth intended to be forced into at least one of said construction elements which is made of wood, and comprising between at least some of said anchoring projections at least one member for preventing penetration into the wood.
  • Said anchoring projections in the wood provide slots between them.
  • the object of the present invention is to remedy the drawbacks of the prior art and to propose a sheet metal strip according to the preamble of claim 1, the manufacture of which is easy and inexpensive.
  • the penetration stop member consists of a gouge-shaped tooth projecting outward.
  • the wood which when the sheet metal sinking penetrates into the concavity of the gouge-shaped tooth, abuts on the surface, substantially transverse to the direction of penetration into the wood of the bottom of the gouge, to limit the insertion of the sheet metal strip into the wooden building element.
  • the gouge-shaped tooth has a substantially cylindrical concave wall, connected to the rest of the sheet metal strip by an inflected wall formed by stamping or stamping, said inflected wall defining a surface constituting the bottom of the tooth and substantially orthogonal to the penetration of the tooth in the wood, so as to stop this penetration.
  • the teeth are arranged in the shape of a gouge so that two consecutive teeth have concavities facing opposite directions with respect to the sheet metal strip, which makes it possible to avoid rectilinear initiations of cracks in the wood.
  • the sheet metal strip is folded in a zigzag along fold lines parallel to each other, two portions of strip adjacent to the same fold line forming an obtuse angle.
  • Said sheet metal strip is preferably made of a steel having a protective coating against oxidation.
  • the anchoring projections advantageously include teeth which may have a profile such as that described in patent No. 93 02733.
  • the anchoring of these teeth is improved by the elasticity of the wood which closes on the teeth after their insertion and also by removing the strip of sheet metal substantially stretched by the press during the insertion operation.
  • said sheet metal strip When the sheet metal strip is used for the production of a wood-concrete composite floor, said sheet metal strip preferably comprises on the side and on a edge means intended to ensure the fixing of the sheet metal strip in a concrete plate. .
  • a sheet metal strip according to the invention can also be used to produce a frame element.
  • said sheet metal strip has on its two edges anchoring projections provided with teeth to be forced into the wood and the sheet metal strip comprises between at least certain anchoring projections at least one stop member for penetration into the wood consisting of a gouge-shaped tooth projecting outwards.
  • FIGS 1A and 1B a sheet metal strip 1 according to an exemplary embodiment of the invention.
  • This sheet metal strip 1 has on an edge anchoring projections 4 forming slots and provided with teeth 6 to be forcefully inserted into the wood.
  • the edge region of the strip situated in the interval between two anchoring projections 4, that is to say the base 5 of the slot formed between these anchoring projections 4, is provided with two stop members for penetration into the wood in accordance with the invention in the form of teeth 7 projecting outwards and in the form of a gouge.
  • the sheet metal strip 1 is zigzagly folded along fold lines L and L 'parallel to each other. It thus has undulations as shown in FIG. 1B.
  • the sheet metal strip comprises in each interval separating two consecutive anchoring projections 4 two gouge-shaped teeth 7, formed at equal distance from the same fold line L.
  • the sheet metal strip 1 is also folded at the level of the anchoring projections 4 and more precisely along a fold line L ′ contained in a median plane of symmetry for the anchoring projection concerned.
  • the use of a strip of sheet metal having corrugations has the advantage of increasing the surface of adhesion of the sheet in wood or the building element, and makes it possible to avoid the formation of a rectilinear primer of crack when the sheet penetrates the wood.
  • the use of a sheet having corrugations also has the advantage of facilitating the handling thereof, which can be stored in rolls before its use.
  • the gouge-shaped teeth make it possible, in addition to stopping the penetration of the sheet metal strip into the wood, to improve the resistance of the sheet metal strip in the latter.
  • the adhesion of the gouge-shaped teeth is improved when the two main faces of the latter are coated with a hot-melt adhesive, preferably with a low melting point, so that the simple operation of insertion into the wood creates local heating. sufficient to melt the glue, which on cooling polymerizes and increases the adhesion of the tooth in the wood.
  • the teeth 6 formed on the anchoring projections 4 are advantageously coated with a hot-melt adhesive to increase their adhesion.
  • FIGS. 2A to 2C show a gouge-shaped tooth 7, according to the invention.
  • Each tooth 7 has come into formation with the sheet metal strip by stamping or stamping and has a cylindrical wall 7a connecting to the rest of the sheet metal strip by an inflected wall formed by the union of two wall parts 7b and 7c each having the general shape of a torus portion.
  • the wall part 7b is concave towards the inside of the tooth while the wall part 7c has its concavity situated on the side outside the tooth.
  • the wall portions 7b and 7c define at their junction a surface 7e substantially perpendicular to the direction S of penetration of the tooth 7 in the wood.
  • the wall portions 7b and 7c stiffen the sheet metal in line with the connection of the tooth to the rest of the sheet metal strip and prevent it from bending when it penetrates into the wood.
  • the free end 7d of the tooth is tapered to facilitate insertion into the wood and this end 7d is preferably tapered in the manner of a spoon as shown.
  • the cylindrical wall 7a of the tooth has in cross section a semi-circular shape as shown in FIG. 2C.
  • the teeth 7 are formed on the sheet metal strip so as to be staggered on either side of the sheet metal strip when observed parallel to the fold lines L and L ', as shown in FIG. 1B.
  • FIG. 3 An assembly of two flanges 2a, 2b connected by a sheet metal strip 1 according to the invention, and constituting a frame element.
  • the sheet metal strip 1 is symmetrical with respect to a plane median perpendicular to the fold lines.
  • FIG. 3 shows a small space between the surface of each of the flanges 2a and 2b and the base 5 of the slots, in reality the surface of the flanges 2a and 2b comes to bear on the base 5 of the slots, until 'there is a wood stop against the 7th surface constituting the bottom of the teeth in the shape of a gouge.
  • FIG. 4 An assembly consisting of a concrete floor 3 and a beam 2b connected by a sheet metal strip 1 according to the invention.
  • the sheet metal strip 1 has on a song a fallen edge 9 stiffening the sheet metal and flares 10 allowing the passage and the maintenance of metal reinforcements 11.
  • the sheet metal stampings 8 forming projections participate in the stiffening of the corrugated sheet and ensure its anchoring in the concrete.
  • the opposite edge has anchoring projections 4 and gouge-shaped teeth 7 as described above.
  • the members for preventing penetration into the wood according to the invention make it possible to obtain a well-determined spacing between the two construction elements that the sheet metal strip connects, and therefore to respect construction dimensions with precision.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Physics & Mathematics (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Laminated Bodies (AREA)
  • Floor Finish (AREA)

Abstract

The corrugated sheet steel band (1) forms a connection between a wooden beam (2a) and either a counter beam (2b) or moulded concrete plate. The steel band has crenellated edges (4,5) whose ends (4) have teeth (6) enabling encastring of the band in each beam. The base (5) of each crenellation has a part stopping penetration of the band in the wood constituted from a projecting tooth (7) in the shape of a gouge penetrating into the wood. This tooth has a concave cylindrical wall having one end with a shape similar to a spoon in order to ease penetration into the wood. The two faces of the tooth wall are coated with thermofusible glue which increase the adherence of the wall in the wood after penetration.

Description

La présente invention concerne une bande de tôle métallique destinée à former liaison entre deux éléments de construction tels que des semelles ou des plaques, l'un au moins de ces éléments étant en bois, ladite bande de tôle métallique comportant sur au moins un chant des saillies d'ancrage munies de dents destinées à être enfoncées à force dans au moins celui desdits éléments de construction qui est en bois, et comportant entre au moins certaines desdites saillies d'ancrage au moins un organe d'arrêt de pénétration dans le bois.The present invention relates to a strip of metal sheet intended to form a connection between two construction elements such as footings or plates, at least one of these elements being of wood, said strip of metal sheet comprising on at least one edge of the anchoring projections provided with teeth intended to be forced into at least one of said construction elements which is made of wood, and comprising between at least some of said anchoring projections at least one member for preventing penetration into the wood.

Il est possible d'utiliser pour conférer plus de rigidité à la liaison plusieurs bandes de tôle métalliques.It is possible to use to give more rigidity to the connection several strips of metal sheet.

Lesdites saillies d'ancrage dans le bois ménagent entre elles des créneaux.Said anchoring projections in the wood provide slots between them.

L'insertion de la bande de tôle dans le bois est effectuée en usine à l'aide d'une presse fonctionnant en continu, et il s'agit d'une opération délicate puisque d'une part, la bande de tôle ne doit pas pénétrer dans le bois au-delà de la base des créneaux formés entre les saillies d'ancrage pour éviter de créer une amorce de fendillement et d'autre part, les saillies d'ancrage doivent être complètement insérées dans le bois malgré l'hétérogénéité naturelle des fibres du bois.The insertion of the sheet metal strip into the wood is carried out in the factory using a press operating continuously, and this is a delicate operation since on the one hand, the sheet metal strip must not penetrate into the wood beyond the base of the slots formed between the anchoring projections to avoid creating a cracking primer and on the other hand, the anchoring projections must be completely inserted in the wood despite the natural heterogeneity wood fibers.

On a proposé dans EP-A-0038830 de réaliser entre les saillies d'ancrage des organes d'arrêt de pénétration sous forme de languettes munies de lignes de pliage, agencées de façon qu'au cours de la pénétration des saillies d'ancrage dans le bois la languette se plie le long desdites lignes de façon à former un pied plat butant contre la surface du bois. Cependant, ce mode de pliage quasi automatique déclenché dès que la languette prend appui sur la surface du bois entraîne souvent des éclats et bavures dans le bois qui, sans trop affaiblir localement le bois, sont inesthétiques.It has been proposed in EP-A-0038830 to produce penetration stop members between the anchoring projections in the form of tongues provided with fold lines, arranged so that during the penetration of the anchoring projections in wood the tongue folds along said lines so as to form a flat foot abutting against the surface of the wood. However, this almost automatic folding mode triggered as soon as the tongue rests on the surface of the wood often leads to chips and burrs in the wood which, without weakening the wood too much locally, are unsightly.

La présente invention a pour but de remédier aux inconvénients de l'art antérieur et de proposer une bande de tôle selon le préambule de la revendication 1 dont la fabrication soit aisée et peu coûteuse.The object of the present invention is to remedy the drawbacks of the prior art and to propose a sheet metal strip according to the preamble of claim 1, the manufacture of which is easy and inexpensive.

Elle y parvient par le fait que l'organe d'arrêt de pénétration est constitué d'une dent en forme de gouge faisant saillie vers l'extérieur.It achieves this by the fact that the penetration stop member consists of a gouge-shaped tooth projecting outward.

Le bois, qui lors de l'enfoncement de la bande de tôle pénètre dans la concavité de la dent en forme de gouge, vient buter sur la surface, sensiblement transversale à la direction de pénétration dans le bois du fond de la gouge, pour limiter l'enfoncement de la bande de tôle dans l'élément de construction en bois.The wood, which when the sheet metal sinking penetrates into the concavity of the gouge-shaped tooth, abuts on the surface, substantially transverse to the direction of penetration into the wood of the bottom of the gouge, to limit the insertion of the sheet metal strip into the wooden building element.

De préférence, la dent en forme de gouge présente une paroi concave sensiblement cylindrique, raccordée au reste de la bande de tôle par une paroi infléchie venue de matriçage ou d'estampage, ladite paroi infléchie définissant une surface constituant le fond de la dent et sensiblement orthogonale au sens pénétration de la dent dans le bois, de façon à arrêter cette pénétration. De préférence, on agence les dents en forme de gouge de manière à ce que deux dents consécutives présentent des concavités tournées vers des directions opposées par rapport à la bande de tôle, ce qui permet d'éviter des amorces rectilignes de fissures du bois.Preferably, the gouge-shaped tooth has a substantially cylindrical concave wall, connected to the rest of the sheet metal strip by an inflected wall formed by stamping or stamping, said inflected wall defining a surface constituting the bottom of the tooth and substantially orthogonal to the penetration of the tooth in the wood, so as to stop this penetration. Preferably, the teeth are arranged in the shape of a gouge so that two consecutive teeth have concavities facing opposite directions with respect to the sheet metal strip, which makes it possible to avoid rectilinear initiations of cracks in the wood.

Avantageusement, la bande de tôle métallique est pliée en zigzag selon des lignes de pliage parallèles entre elles, deux portions de bande adjacentes à une même ligne de pliage formant un angle obtus.Advantageously, the sheet metal strip is folded in a zigzag along fold lines parallel to each other, two portions of strip adjacent to the same fold line forming an obtuse angle.

Ladite bande de tôle métallique est de préférence réalisée en un acier comportant un revêtement protecteur contre l'oxydation.Said sheet metal strip is preferably made of a steel having a protective coating against oxidation.

Les saillies d'ancrage comportent avantageusement des dents qui peuvent présenter un profil tel que celui décrit dans le brevet N° 93 02733. L'ancrage de ces dents est amélioré par l'élasticité du bois qui se referme sur les dents après leur insertion et également par le retrait de la bande de tôle sensiblement étirée par la presse lors de l'opération d'insertion.The anchoring projections advantageously include teeth which may have a profile such as that described in patent No. 93 02733. The anchoring of these teeth is improved by the elasticity of the wood which closes on the teeth after their insertion and also by removing the strip of sheet metal substantially stretched by the press during the insertion operation.

Lorsque la bande de tôle est utilisée pour la réalisation d'un plancher composite bois-béton, ladite bande de tôle comporte de préférence sur le flanc et sur un chant des moyens destinés à assurer la fixation de la bande de tôle dans une plaque de béton.When the sheet metal strip is used for the production of a wood-concrete composite floor, said sheet metal strip preferably comprises on the side and on a edge means intended to ensure the fixing of the sheet metal strip in a concrete plate. .

Une bande de tôle selon l'invention peut également être utilisée pour réaliser un élément de charpente.A sheet metal strip according to the invention can also be used to produce a frame element.

Dans ce cas, ladite bande de tôle comporte sur ses deux chants des saillies d'ancrage munies de dents à enfoncer à force dans le bois et la bande de tôle comporte entre au moins certaines saillies d'ancrage au moins un organe d'arrêt de pénétration dans le bois constitué d'une dent en forme de gouge faisant saillie vers l'extérieur.In this case, said sheet metal strip has on its two edges anchoring projections provided with teeth to be forced into the wood and the sheet metal strip comprises between at least certain anchoring projections at least one stop member for penetration into the wood consisting of a gouge-shaped tooth projecting outwards.

D'autres caractéristiques et avantage de la présente invention apparaîtront à la lecture de la description détaillée qui va suivre, et à l'examen du dessin annexé sur lequel :

  • la figure 1A est une vue de face schématique et partielle d'une bande de tôle conforme à l'invention,
  • la figure 1B est une vue de profil de la bande de tôle représentée sur la figure 1A,
  • la figure 2A est une vue en coupe longitudinale d'une dent en forme de gouge conforme à l'invention,
  • la figure 2B est une vue de face selon la flèche B de la figure 2A,
  • la figure 2C est une coupe transversale selon le trait de coupe C-C de la figure 2A,
  • la figure 3 est une vue schématique et partielle en coupe longitudinale d'un assemblage de deux semelles en bois reliées par une bande de tôle conforme à l'invention,
  • la figure 4 est une vue en coupe longitudinale d'un assemblage d'une semelle en bois et d'une plaque de béton reliées par une bande de tôle conforme à l'invention.
Other characteristics and advantages of the present invention will appear on reading the detailed description which follows, and on examining the appended drawing in which:
  • FIG. 1A is a schematic and partial front view of a sheet metal strip according to the invention,
  • FIG. 1B is a side view of the sheet metal strip shown in FIG. 1A,
  • FIG. 2A is a view in longitudinal section of a gouge-shaped tooth according to the invention,
  • FIG. 2B is a front view along the arrow B in FIG. 2A,
  • FIG. 2C is a cross section along the section line CC in FIG. 2A,
  • FIG. 3 is a schematic and partial view in longitudinal section of an assembly of two wooden soles connected by a strip of sheet metal according to the invention,
  • Figure 4 is a longitudinal sectional view of an assembly of a wooden sole and a concrete plate connected by a strip of sheet metal according to the invention.

On a représenté sur les figures 1A et 1B une bande de tôle 1 conforme à un exemple de réalisation de l'invention. Cette bande de tôle 1 comporte sur un chant des saillies d'ancrage 4 formant des créneaux et pourvues de dents 6 à insérer à force dans le bois. La région du chant de la bande située dans l'intervalle entre deux saillies d'ancrage 4, c'est-à-dire la base 5 du créneau formé entre ces saillies d'ancrage 4, est munie de deux organes d'arrêt de pénétration dans le bois se présentant conformément à l'invention sous la forme de dents 7 formant saillie vers l'extérieur et en forme de gouge.There is shown in Figures 1A and 1B a sheet metal strip 1 according to an exemplary embodiment of the invention. This sheet metal strip 1 has on an edge anchoring projections 4 forming slots and provided with teeth 6 to be forcefully inserted into the wood. The edge region of the strip situated in the interval between two anchoring projections 4, that is to say the base 5 of the slot formed between these anchoring projections 4, is provided with two stop members for penetration into the wood in accordance with the invention in the form of teeth 7 projecting outwards and in the form of a gouge.

La bande de tôle 1 est pliée en zigzag selon des lignes de pliage L et L' parallèles entre elles. Elle présente ainsi des ondulations comme représenté sur la figure 1B.The sheet metal strip 1 is zigzagly folded along fold lines L and L 'parallel to each other. It thus has undulations as shown in FIG. 1B.

Dans l'exemple de réalisation décrit, la bande de tôle comporte dans chaque intervalle séparant deux saillies d'ancrage 4 consécutives deux dents 7 en forme de gouge, formées à égale distance d'une même ligne de pliage L. La bande de tôle 1 est également pliée au niveau des saillies d'ancrage 4 et plus précisément selon une ligne de pliage L' contenue dans un plan médian de symétrie pour la saillie d'ancrage concernée.In the embodiment described, the sheet metal strip comprises in each interval separating two consecutive anchoring projections 4 two gouge-shaped teeth 7, formed at equal distance from the same fold line L. The sheet metal strip 1 is also folded at the level of the anchoring projections 4 and more precisely along a fold line L ′ contained in a median plane of symmetry for the anchoring projection concerned.

Deux parties planes de la bande de tôle 1, adjacentes à une même ligne de pliage forment entre elles un angle obtus, comme représenté sur la figure 1B.Two flat parts of the sheet metal strip 1, adjacent to the same fold line form an obtuse angle between them, as shown in FIG. 1B.

L'emploi d'une bande de tôle présentant des ondulations a l'avantage d'augmenter la surface d'adhérence de la tôle dans le bois ou l'élément de construction, et permet d'éviter la constitution d'une amorce rectiligne de fissure lors de la pénétration de la tôle dans le bois. L'emploi d'une tôle présentant des ondulations présente également l'avantage de faciliter les manipulations de celle-ci, qui peut être stockée en rouleaux préalablement à son utilisation.The use of a strip of sheet metal having corrugations has the advantage of increasing the surface of adhesion of the sheet in wood or the building element, and makes it possible to avoid the formation of a rectilinear primer of crack when the sheet penetrates the wood. The use of a sheet having corrugations also has the advantage of facilitating the handling thereof, which can be stored in rolls before its use.

On notera encore que le pliage en angle obtus de la tôle entre deux dents en forme de gouge 7 consécutives évite l'alignement des surfaces pénétrant dans le bois et la création d'amorce de fissures.It will also be noted that the obtuse angle bending of the sheet between two gouge-shaped teeth 7 consecutive avoids the alignment of the surfaces penetrating into the wood and the creation of crack initiation.

Les dents en forme de gouge permettent, outre d'arrêter la pénétration de la bande de tôle dans le bois, d'améliorer la tenue de la bande de tôle dans ce dernier.The gouge-shaped teeth make it possible, in addition to stopping the penetration of the sheet metal strip into the wood, to improve the resistance of the sheet metal strip in the latter.

L'adhérence des dents en forme de gouge est améliorée lorsque les deux faces principales de ces dernières sont enduites d'une colle thermofusible, de préférence à bas point de fusion de sorte que la simple opération d'insertion dans le bois crée un échauffement local suffisant pour faire fondre la colle, qui en refroidissant se polymérise et augmente l'adhérence de la dent dans le bois. De façon similaire, on enduit avantageusement les dents 6 formées sur les saillies d'ancrage 4 d'une colle thermofusible pour augmenter leur adhérence.The adhesion of the gouge-shaped teeth is improved when the two main faces of the latter are coated with a hot-melt adhesive, preferably with a low melting point, so that the simple operation of insertion into the wood creates local heating. sufficient to melt the glue, which on cooling polymerizes and increases the adhesion of the tooth in the wood. Similarly, the teeth 6 formed on the anchoring projections 4 are advantageously coated with a hot-melt adhesive to increase their adhesion.

On a représenté sur les figures 2A à 2C une dent en forme de gouge 7, selon l'invention. Chaque dent 7 est venue de formation avec la bande de tôle par estampage ou matriçage et comporte une paroi cylindrique 7a se raccordant au reste de la bande de tôle par une paroi infléchie constituée par la réunion de deux parties de paroi 7b et 7c présentant chacune la forme générale d'une portion de tore. La partie de paroi 7b est concave vers l'intérieur de la dent tandis que la partie de paroi 7c a sa concavité située du côté extérieur à la dent. Les parties de paroi 7b et 7c définissent à leur jonction une surface 7e sensiblement perpendiculaire à la direction S de pénétration de la dent 7 dans le bois.FIGS. 2A to 2C show a gouge-shaped tooth 7, according to the invention. Each tooth 7 has come into formation with the sheet metal strip by stamping or stamping and has a cylindrical wall 7a connecting to the rest of the sheet metal strip by an inflected wall formed by the union of two wall parts 7b and 7c each having the general shape of a torus portion. The wall part 7b is concave towards the inside of the tooth while the wall part 7c has its concavity situated on the side outside the tooth. The wall portions 7b and 7c define at their junction a surface 7e substantially perpendicular to the direction S of penetration of the tooth 7 in the wood.

Les parties de paroi 7b et 7c rigidifient la tôle au droit du raccordement de la dent sur le reste de la bande de tôle et évitent que celle-ci ne plie au moment de sa pénétration dans le bois.The wall portions 7b and 7c stiffen the sheet metal in line with the connection of the tooth to the rest of the sheet metal strip and prevent it from bending when it penetrates into the wood.

Avantageusement, l'extrémité libre 7d de la dent est effilée pour faciliter l'insertion dans le bois et cette extrémité 7d est de préférence effilée à la manière d'une cuillère comme représenté.Advantageously, the free end 7d of the tooth is tapered to facilitate insertion into the wood and this end 7d is preferably tapered in the manner of a spoon as shown.

La paroi cylindrique 7a de la dent présente en coupe transversale une forme demi-circulaire comme représenté sur la figure 2C.The cylindrical wall 7a of the tooth has in cross section a semi-circular shape as shown in FIG. 2C.

Il serait possible en variante, sans sortir du cadre de la présente invention, bien que moins avantageux, de réaliser la surface d'arrêt de pénétration dans le bois de la dent en forme de gouge par une portion de disque fixée à angle droit à la fois sur la paroi cylindrique de la dent et sur la surface plane adjacente de la bande de tôle.It would be possible as a variant, without departing from the scope of the present invention, although less advantageous, to produce the penetration stop surface in the wood of the tooth in the form of a gouge by a portion of disc fixed at right angles to the both on the cylindrical wall of the tooth and on the adjacent flat surface of the sheet metal strip.

Les dents 7 sont formées sur la bande de tôle de manière à être disposées en quinconce de part et d'autre de la bande de tôle lorsque observé parallèlement aux lignes de pliage L et L', comme représenté sur la figure 1B.The teeth 7 are formed on the sheet metal strip so as to be staggered on either side of the sheet metal strip when observed parallel to the fold lines L and L ', as shown in FIG. 1B.

On a représenté sur la figure 3 un assemblage de deux semelles 2a, 2b reliées par une bande de tôle 1 conforme à l'invention, et constituant un élément de charpente. Dans cet exemple, la bande de tôle 1 est symétrique par rapport à un plan médian perpendiculaire aux lignes de pliage. Bien entendu il est possible, sans sortir du cadre de la présente invention, de réaliser sur les deux chants de la bande de tôle des saillies d'ancrage respectives décalées dans le sens longitudinal pour obtenir une disposition générale en quinconce, avec sur un chant une saillie d'ancrage 4 et sur le chant opposé, au droit de cette saillie d'ancrage, la base 5 d'un créneau séparant deux saillies d'ancrage 4 consécutives et sur laquelle sont formées des dents 7 en forme de gouge.There is shown in Figure 3 an assembly of two flanges 2a, 2b connected by a sheet metal strip 1 according to the invention, and constituting a frame element. In this example, the sheet metal strip 1 is symmetrical with respect to a plane median perpendicular to the fold lines. Of course it is possible, without departing from the scope of the present invention, to produce on the two edges of the sheet metal strip respective anchoring projections offset in the longitudinal direction to obtain a general staggered arrangement, with a anchoring projection 4 and on the opposite edge, in line with this anchoring projection, the base 5 of a slot separating two consecutive anchoring projections 4 and on which teeth 7 are formed in the form of a gouge.

Bien que la figure 3 montre un faible espace entre la surface de chacune des semelles 2a et 2b et la base 5 des créneaux, en réalité la surface des semelles 2a et 2b vient en appui sur la base 5 des créneaux, jusqu'à ce qu'il y ait butée du bois contre la surface 7e constituant le fond des dents en forme de gouge.Although FIG. 3 shows a small space between the surface of each of the flanges 2a and 2b and the base 5 of the slots, in reality the surface of the flanges 2a and 2b comes to bear on the base 5 of the slots, until 'there is a wood stop against the 7th surface constituting the bottom of the teeth in the shape of a gouge.

On a représenté sur la figure 4 un assemblage constitué d'un plancher en béton 3 et d'une poutre 2b reliés par une bande de tôle 1 conforme à l'invention. Pour sa fixation au plancher en béton, la bande de tôle 1 comporte sur un chant un bord tombé 9 rigidifiant la tôle et des évasements 10 permettant le passage et le maintien d'armatures métalliques 11. Sur le flanc de la tôle des emboutissages 8 formant saillies participent à la rigidification de la tôle ondulée et assurent son ancrage dans le béton. Le chant opposé comporte des saillies d'ancrage 4 et des dents en forme de gouge 7 comme décrit précédemment.There is shown in Figure 4 an assembly consisting of a concrete floor 3 and a beam 2b connected by a sheet metal strip 1 according to the invention. For its fixing to the concrete floor, the sheet metal strip 1 has on a song a fallen edge 9 stiffening the sheet metal and flares 10 allowing the passage and the maintenance of metal reinforcements 11. On the side of the sheet metal stampings 8 forming projections participate in the stiffening of the corrugated sheet and ensure its anchoring in the concrete. The opposite edge has anchoring projections 4 and gouge-shaped teeth 7 as described above.

On notera que les organes d'arrêt de pénétration dans le bois selon l'invention permettent d'obtenir un écartement bien déterminé entre les deux éléments de construction que la bande de tôle relie, donc de respecter avec précision des côtes de construction.It will be noted that the members for preventing penetration into the wood according to the invention make it possible to obtain a well-determined spacing between the two construction elements that the sheet metal strip connects, and therefore to respect construction dimensions with precision.

Claims (9)

Bande de tôle métallique (1) destinée à former liaison entre deux éléments de construction (2a, 2b ; 2b, 3) tels que des semelles ou des plaques, un au moins (2b) desdits éléments de construction étant en bois, ladite bande de tôle comportant sur au moins un chant des saillies d'ancrage (4) munies de dents (6) destinées à être enfoncées à force dans au moins celui desdits éléments de construction qui est en bois, ladite bande de tôle comportant entre au moins certaines saillies d'ancrage au moins un organe d'arrêt de pénétration dans le bois, caractérisée par le fait que ledit organe d'arrêt de pénétration est constitué d'une dent (7) en forme de gouge formant saillie vers l'extérieur.Strip of metal sheet (1) intended to form a connection between two construction elements (2a, 2b; 2b, 3) such as footings or plates, at least one (2b) of said construction elements being of wood, said strip of sheet metal comprising on at least one edge of the anchoring projections (4) provided with teeth (6) intended to be forced into at least one of said construction elements which is made of wood, said strip of sheet metal comprising between at least certain projections anchoring at least one penetration stop member in the wood, characterized in that said penetration stop member consists of a tooth (7) in the form of a gouge projecting outwards. Bande de tôle métallique selon la revendication 1, caractérisée par le fait que ladite dent (7) en forme de gouge présente une paroi (7a) concave sensiblement cylindrique, raccordée au reste de la bande de tôle par une paroi infléchie venue de matriçage ou d'estampage, ladite paroi infléchie définissant une surface (7e) constituant le fond de la dent et sensiblement orthogonale au sens de pénétration de la dent dans le bois.Sheet metal strip according to Claim 1, characterized in that the said gouge-shaped tooth (7) has a substantially cylindrical concave wall (7a), connected to the rest of the sheet strip by an inflected wall coming from die-stamping or d stamping, said inflected wall defining a surface (7e) constituting the bottom of the tooth and substantially orthogonal to the direction of penetration of the tooth into the wood. Bande de tôle métallique selon l'une des revendications 1 ou 2, caractérisée par le fait que ladite dent en forme de gouge présente une extrémité (7d) effilée de manière à faciliter la pénétration de la dent dans le bois.Sheet metal strip according to either of Claims 1 and 2, characterized in that the said gouge-shaped tooth has a tapered end (7d) so as to facilitate the penetration of the tooth into the wood. Bande de tôle métallique selon l'une quelconque des revendications précédentes, caractérisée par le fait les deux faces principales de ladite dent en forme de gouge sont enduites de colle thermofusible.Sheet metal strip according to any one of the preceding claims, characterized in that the two main faces of the said gouge-shaped tooth are coated with hot-melt adhesive. Bande de tôle métallique selon l'une quelconque des revendications précédentes, caractérisée par le fait que les dents en forme de gouge sont agencées sur ladite bande de tôle de manière à ce que deux dents consécutives en forme de gouge présentent des concavités tournées dans des directions opposées par rapport à la bande de tôle, de façon à éviter des amorces rectilignes de fissures du bois.Sheet metal strip according to any one of the preceding claims, characterized in that the gouge-shaped teeth are arranged on said sheet metal strip so that two consecutive gouge-shaped teeth have concavities turned in directions opposite to the strip of sheet metal, so as to avoid rectilinear initiations of cracks in the wood. Bande de tôle métallique selon la revendication 5, caractérisée par le fait que ladite bande de tôle est pliée selon des lignes de pliage parallèles pour représenter un profil général en zigzag, deux parties adjacentes à une même ligne de pliage formant entre elles un angle obtus de façon à éviter l'alignement d'amorces de fissures du bois.Sheet metal strip according to Claim 5, characterized in that the said sheet strip is folded according to parallel fold lines to represent a general zigzag profile, two parts adjacent to the same fold line forming an obtuse angle between them so as to avoid the alignment of crack initiators of the wood. Bande de tôle métallique (1) selon l'une quelconque des revendications précédentes, caractérisée par le fait que ladite bande de tôle métallique comporte un revêtement protecteur contre l'oxydation.Sheet metal strip (1) according to any one of the preceding claims, characterized in that the said sheet metal strip has a protective coating against oxidation. Utilisation d'une bande de tôle métallique telle que définie dans l'une des revendications précédentes pour la réalisation d'un plancher composite bois-béton, ladite bande de tôle comportant sur le flanc et sur un chant des moyens (8,9,10) destinés à assurer la fixation de la bande de tôle dans une plaque de béton (3).Use of a strip of metal sheet as defined in one of the preceding claims for the production of a wood-concrete composite floor, said strip of sheet metal comprising on the side and on an edge means (8,9,10 ) intended to secure the sheet metal strip in a concrete plate (3). Utilisation d'une bande de tôle métallique (1) selon l'une quelconque des revendications 1 à 7, pour la réalisation d'un élément de charpente, ladite bande de tôle métallique reliant deux semelles (2a, 2b) et comportant sur ses deux chants des saillies d'ancrage munies de dents à enfoncer à force dans le bois, ladite bande de tôle comportant en outre entre au moins certaines saillies d'ancrage au moins un organe d'arrêt de pénétration dans le bois constitué d'une dent (7) en forme de gouge faisant saillie vers l'extérieur.Use of a strip of metal sheet (1) according to any one of Claims 1 to 7, for the production of a frame element, said strip of metal sheet connecting two flanges (2a, 2b) and comprising on its two edges of the anchoring projections provided with teeth to be forced into the wood, said sheet metal strip further comprising between at least certain anchoring projections at least one member for preventing penetration into the wood consisting of a tooth ( 7) shaped gouge projecting outward.
EP95402300A 1995-10-13 1995-10-13 Sheet metal strip for interconnecting building elements Expired - Lifetime EP0768438B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE69517980T DE69517980D1 (en) 1995-10-13 1995-10-13 Sheet metal strip for connecting components together
EP95402300A EP0768438B1 (en) 1995-10-13 1995-10-13 Sheet metal strip for interconnecting building elements
AT95402300T ATE194677T1 (en) 1995-10-13 1995-10-13 METAL BAND FOR CONNECTING COMPONENTS TO EACH OTHER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP95402300A EP0768438B1 (en) 1995-10-13 1995-10-13 Sheet metal strip for interconnecting building elements

Publications (2)

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EP0768438A1 true EP0768438A1 (en) 1997-04-16
EP0768438B1 EP0768438B1 (en) 2000-07-12

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EP (1) EP0768438B1 (en)
AT (1) ATE194677T1 (en)
DE (1) DE69517980D1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999002796A1 (en) * 1997-07-08 1999-01-21 Sika Ag, Vorm. Kaspar Winkler & Co Composite element and its method of manufacturing
DE19808208A1 (en) * 1998-02-27 1999-09-02 Fischer Artur Werke Gmbh Connection element for connecting wood and concrete
CN103437494A (en) * 2013-09-12 2013-12-11 南京工业大学 Combined beam of engineered wood, profiled steel sheet and light-weight aggregate concrete and production and installation method of combined beam

Citations (7)

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Publication number Priority date Publication date Assignee Title
FR726897A (en) * 1931-11-25 1932-06-04 Brev De Construction S A Et Beam and its application to the construction of floors
DE1609464A1 (en) * 1966-12-08 1970-06-11 Reising Wolfgang Components
WO1981001305A1 (en) * 1979-11-02 1981-05-14 J Falkenberg Corrugated,toothed web strip for construction elements
AU527716B2 (en) * 1980-01-29 1983-03-17 Nail Web (Aust)pty Ltd. Building construction member
US4862667A (en) * 1987-09-18 1989-09-05 Melland Robert C Metal structural fastener/stiffener with integral prongs
FR2702236A1 (en) * 1993-03-03 1994-09-09 Gauthier Daniel Wood-concrete composite construction element.
FR2718770A1 (en) * 1994-04-14 1995-10-20 Gauthier Daniel Corrugated steel band for joining wooden beams

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR726897A (en) * 1931-11-25 1932-06-04 Brev De Construction S A Et Beam and its application to the construction of floors
DE1609464A1 (en) * 1966-12-08 1970-06-11 Reising Wolfgang Components
WO1981001305A1 (en) * 1979-11-02 1981-05-14 J Falkenberg Corrugated,toothed web strip for construction elements
EP0038830A1 (en) 1979-11-02 1981-11-04 Johan Caspar Falkenberg Corrugated, toothed web strip for construction elements.
AU527716B2 (en) * 1980-01-29 1983-03-17 Nail Web (Aust)pty Ltd. Building construction member
US4862667A (en) * 1987-09-18 1989-09-05 Melland Robert C Metal structural fastener/stiffener with integral prongs
FR2702236A1 (en) * 1993-03-03 1994-09-09 Gauthier Daniel Wood-concrete composite construction element.
FR2718770A1 (en) * 1994-04-14 1995-10-20 Gauthier Daniel Corrugated steel band for joining wooden beams

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999002796A1 (en) * 1997-07-08 1999-01-21 Sika Ag, Vorm. Kaspar Winkler & Co Composite element and its method of manufacturing
DE19808208A1 (en) * 1998-02-27 1999-09-02 Fischer Artur Werke Gmbh Connection element for connecting wood and concrete
CN103437494A (en) * 2013-09-12 2013-12-11 南京工业大学 Combined beam of engineered wood, profiled steel sheet and light-weight aggregate concrete and production and installation method of combined beam

Also Published As

Publication number Publication date
EP0768438B1 (en) 2000-07-12
ATE194677T1 (en) 2000-07-15
DE69517980D1 (en) 2000-08-17

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