EP1609923A1 - Formwork made of foamed plastic material for beams made of folded steel sheet - Google Patents

Formwork made of foamed plastic material for beams made of folded steel sheet Download PDF

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Publication number
EP1609923A1
EP1609923A1 EP05291340A EP05291340A EP1609923A1 EP 1609923 A1 EP1609923 A1 EP 1609923A1 EP 05291340 A EP05291340 A EP 05291340A EP 05291340 A EP05291340 A EP 05291340A EP 1609923 A1 EP1609923 A1 EP 1609923A1
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EP
European Patent Office
Prior art keywords
heel
beams
connecting means
interjoists
constituted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05291340A
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German (de)
French (fr)
Inventor
Bruno Burger
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Knauf SNC
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Knauf SNC
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Publication date
Application filed by Knauf SNC filed Critical Knauf SNC
Publication of EP1609923A1 publication Critical patent/EP1609923A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • E04B5/29—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated the prefabricated parts of the beams consisting wholly of 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
    • E04B5/26—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated with filling members between the beams
    • E04B5/261—Monolithic filling members
    • E04B5/263—Monolithic filling members with a flat lower surface
    • 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
    • E04B5/26—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated with filling members between the beams
    • E04B5/266—Filling members covering the undersurface of the beams
    • 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
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/06—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
    • E04C3/07—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web at least partly of bent or otherwise deformed strip- or sheet-like material
    • 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
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/0473—U- or C-shaped

Definitions

  • the present invention relates to the field the construction of buildings, including lost formwork elements intended for the construction of floors, also called interjoists.
  • the present invention relates more particularly to a intervous constituted by a plate made of cellular plastic and presenting means of connection with two beams consisting of a material folded.
  • the interjoists are intercalated parts that one comes to place on parallel beams horizontal and equidistant. To do this, between you present on both sides of its faces side of the spoilers that come respectively rest on the heel of two joists neighbors.
  • the interjoists thus arranged then form a bridge between the joists and helps to achieve a support continuous for the casting of a concrete slab.
  • the present invention intends to remedy disadvantages of the prior art by proposing a interjoists adapted to the joists shaped folded sheet and ensuring alone, by its configuration, the thermal insulation required.
  • the present invention is type described above and is remarkable in its the widest meaning, in that the first means of connection consists of a shoulder whose surface lower is clean to bear on the surface heel of a beam, and that the second connecting means is constituted by a slot the shape of which is suitable for insertion at least a portion of the heel of a beam.
  • the interview is extended, from side of the second connecting means, by a tongue having a length corresponding to the width of a beam.
  • the first connecting means is constituted by a shoulder having on its lower surface a groove positioned for heel edge engagement a beam.
  • the width of the shoulder of the first connecting means corresponds to the width of the heel.
  • the first connection means consists of a lateral cutout whose surface superior shape by the shoulder and whose height corresponds to the height of the tongue extending the interjoists on the opposite side.
  • the second connecting means is constituted by a slot with a corresponding section substantially at the section of the heel of the beams, and a depth corresponding to the width of the heel of beams.
  • the slot has a lip forming with the horizontal plane an angle allowing the positioning on the heel of a beam by a slip of the interjoists at an angle, according to an inclination determined to allow the passage of the interjoists between two consecutive beams.
  • the second connecting means is constituted by a slot whose section, in the part opposite the opening, having a surface upper inclined at an angle corresponding to the inclination of the lateral edge of the heel of the beams.
  • the groove and / or the slot present (s) a recess in its (their) summit so avoid contact with the edge of the heel.
  • said connecting means respectively marking notches.
  • the present invention also relates to a formwork system, especially for the formation of floor or ceiling.
  • the formwork system is constituted by a plurality of beams arranged in parallel, each beam having two longitudinal heels, and by a plurality of interjoists each presenting a first connecting means which consists of a shoulder whose lower surface is clean to come resting on the upper surface of the heel of a beam, and a second connecting means which is constituted by a lateral slot whose shape is clean to allow insertion of at least a portion of the heel a beam.
  • the present invention relates to a interjoists (1) adapted to be positioned between two beams (2, 3) made of steel sheet folded, such as galvanized sheet, said beams being equidistant from one another (figure 1).
  • said interjoists (1) when in place, rest on the heel (4) of each beams (2, 3).
  • the heels of the folded steel beams have the characteristic of having an edge constituting a zone back (5).
  • the first link means (6) consists of a longitudinal cut forming a shoulder (8) the lower surface (9) is adapted to bear on the upper surface of the heel (4) of the beam (2).
  • the lower surface (9) said shoulder has a longitudinal groove (10).
  • This groove (10) is disposed on the lower surface shoulder (8) so as to receive the zone of return (5) constituting the heel (4) of the beam (2).
  • Said groove (10) will be configured to allow easy set-up and removal between said beams (2, 3). She will introduce advantageously a triangular section.
  • the groove (10) has a recess (19) at its top to avoid contact with the end of the heel (4). This is to avoid or delay the initiation of rupture generated during loading by the contact the cutting edge of the beam (2) on the interjoists (1).
  • the width l 1 of said shoulder (8) will at least for width the width of the heel (4) of said beam (2).
  • the second connecting means (7) consists of a longitudinal slot (11) whose shape is adapted to allow insertion of at least a portion of the heel (4) the beam (3) equidistant from the beam (2).
  • the slot (11) presents a section corresponding substantially to the section of the heel (4) of said beam (3), and a depth corresponding to the width of said heel (4).
  • Said slot (11) further has a lip (12) forming with the horizontal plane an angle ⁇ .
  • the lip (12) as well configured, will allow the positioning of the interjoists (1) between the two beams (2, 3) allowing the passage of the heel (4) of said beam (3) in said slot (11).
  • the opposite part (13) at the opening of said slot (11) has a surface inclined top (14) at an angle corresponding to the inclination of the return zone (5) of the heel (4) of said beam (3) with respect to the horizontal plane.
  • the slot (11) has an obvious (20) at the top to avoid any contact with the end of the heel (4). This is to avoid or delay the onset of rupture generated when load by the contact of the cutting edge of the beam (3) on the interjoists (1).
  • Said interjoists (1) is further extended, from side of the second connecting means (7), by a tongue (15).
  • said tongue (15) has a length L substantially corresponding to the width of the beams (2, 3).
  • the height h1 of the tongue (15) corresponds to the height h2 of the lateral cutout constituting the first connecting means (6).
  • Figures 3a to 3c illustrate the principle of the installation of a interjoists according to the invention between two equidistant beams.
  • the tongue (15) of the interjoists (1) is slid under the beam (3) so that the heel (4) of said beam (3) fits into the slot (11) constituting the second connecting means (7) ( Figure 3a).
  • said interjoists (1) is maintained in an inclined position relative to the horizontal plane according to a specific inclination to allow the passage of the interjoists between the two beams (2, 3).
  • Figure 4a shows a sectional view partial two extremity interjoists cooperating around a beam.
  • the connecting means of each interjoists may have notches (16) for marking.
  • notches (16) serve to mark the location where the formation of a throat in the thickness of the interjoists when interjoists to position is an end interjoists. Indeed, end-users must position themselves against supports (17) supporting the beams, said supports having at least one lower branch (18). when comes to position the end interjoists, the branch lower (18) of said support (17) enters the throat formed for this purpose in said interjoists (1), at a height corresponding to the height marked by said notches (16).

Abstract

The unit (1) has a cellular plastic plate with two connection units, where one unit has a shoulder with a groove to engage the shoulder with a return zone (5) of a heel (4) of a joist (2). The other unit has a lateral slit with an upper surface inclined at an angle corresponding to an inclination of a return zone of a heel of a joist (3). The groove and slit have recesses (19, 20) to avoid contact with ends of the respective heels. An independent claim is also included for a formwork system having joists and structural floor units.

Description

La présente invention se rapporte au domaine de la construction des bâtiments, et notamment des éléments de coffrage perdu destinés à la construction de planchers, également appelés entrevous.The present invention relates to the field the construction of buildings, including lost formwork elements intended for the construction of floors, also called interjoists.

La présente invention se rapporte plus particulièrement à un entrevous constitué par une plaque en matière plastique alvéolaire et présentant des moyens de liaison avec deux poutrelles consistant en un matériau plié.The present invention relates more particularly to a intervous constituted by a plate made of cellular plastic and presenting means of connection with two beams consisting of a material folded.

Les entrevous sont des pièces intercalaires que l'on vient placer sur des poutrelles parallèles horizontales et équidistantes. Pour ce faire, les entrevous présentent de part et d'autre de ses faces latérales des becquets d'appui lesquels viennent respectivement reposer sur le talon de deux poutrelles voisines. L'entrevous ainsi disposé forme alors un pont entre les poutrelles et contribue à réaliser un support continu pour la coulée d'une dalle de béton.The interjoists are intercalated parts that one comes to place on parallel beams horizontal and equidistant. To do this, between you present on both sides of its faces side of the spoilers that come respectively rest on the heel of two joists neighbors. The interjoists thus arranged then form a bridge between the joists and helps to achieve a support continuous for the casting of a concrete slab.

Ces entrevous, restant en place après la coulée de la dalle, ont également pour fonction d'assurer l'isolation thermique entre les niveaux supérieur et inférieur du plancher.These interjoists, remaining in place after the casting of the slab, also have the function of ensuring thermal insulation between the upper and lower levels lower floor.

Or, il existe à ce jour des besoins en termes de performances thermiques des entrevous et ce, bien qu'un certain nombre d'améliorations aient été déjà apportées. Ces améliorations ont été obtenues notamment par la qualité même du matériau choisi pour réaliser l'entrevous (polystyrène expansé - PSE), mais aussi en conférant aux entrevous une configuration particulière. En effet, dans ce dernier cas, l'entrevous est muni d'une languette qui, lorsque l'entrevous repose sur les deux poutrelles équidistantes, est positionnée sous le talon d'une des deux poutrelles.However, to date, there are needs in terms of thermal performance of interjoists and this, although a a number of improvements have already been made. These improvements were obtained in particular by the same quality of the material chosen to realize the interjoists (expanded polystyrene - EPS), but also by conferring between you a particular configuration. Indeed, in the latter case, the interjoists are provided with a tongue which, when the interjoists rest on the two beams equidistant, is positioned under the heel of one of the two beams.

Cependant, de tels entrevous sont utilisés avec des poutrelles en béton classiques, présentant la forme d'un « T » inversé. Or, il existe également des poutrelles en acier plié, du type tôle galvanisée, et pour lesquelles les talons sont munis d'une zone de retour. Ainsi, du fait de la présence de la zone de retour, les entrevous précédemment décrits ne peuvent être utilisés pour des poutrelles ainsi configurées.However, such interjoists are used with conventional concrete beams, presenting the shape of an inverted "T". However, there are also bent steel beams, of the galvanized sheet type, and for which heels are provided with a return zone. Thus, because of the presence of the return zone, previously described can not be used for beams thus configured.

Pour ce type de poutrelles, il existe une solution permettant d'offrir un ensemble entrevous/poutrelles présentant l'isolation thermique requise. Il s'agit de positionner un entrevous en PSE sur les talons des deux poutrelles équidistantes et de placer une pièce supplémentaire en PSE dans l'âme de chacune des poutrelles, ladite pièce étant retenue dans l'âme de la poutrelle au moyen d'un élément de retenu métallique fixé sous la poutrelle.For this type of joists, there is a solution to offer a set interjoist / beams with thermal insulation required. It's a matter of positioning a PSE interviewer on the heels of the two beams equidistant and place an extra room in PSE in the soul of each of beams, said piece being retained in the soul of the beam by means of a fixed metal retainer under the beam.

Une telle solution présente cependant l'inconvénient d'être de mise en oeuvre relativement lourde, et coûteuse du fait de la nécessité de trois pièces au moins (entrevous, pièce supplémentaire, élément de retenu) nécessaire pour parvenir aux performances d'isolation et de rigidité requises.Such a solution, however, presents the disadvantage of being of relatively heavy, and expensive because of the need for three rooms at least (interjoists, additional room, element of retained) necessary to achieve the performances insulation and rigidity required.

La présente invention entend remédier aux inconvénients de l'art antérieur en proposant un entrevous adapté aux poutrelles en forme de tôle pliée et assurant à lui seul, de par sa configuration, l'isolation thermique requise.The present invention intends to remedy disadvantages of the prior art by proposing a interjoists adapted to the joists shaped folded sheet and ensuring alone, by its configuration, the thermal insulation required.

Pour ce faire, la présente invention est du type décrit ci-dessus et elle est remarquable, dans son acception la plus large, en ce que le premier moyen de liaison est constitué par un épaulement dont la surface inférieure est propre à venir en appui sur la surface supérieure du talon d'une poutrelle, et en ce que le deuxième moyen de liaison est constitué par une fente latérale dont la forme est propre à permettre l'insertion d'une partie au moins du talon d'une poutrelle.To do this, the present invention is type described above and is remarkable in its the widest meaning, in that the first means of connection consists of a shoulder whose surface lower is clean to bear on the surface heel of a beam, and that the second connecting means is constituted by a slot the shape of which is suitable for insertion at least a portion of the heel of a beam.

Avantageusement, l'entrevous est prolongé, du côté du deuxième moyen de liaison, par une languette présentant une longueur correspondant à la largeur d'une poutrelle.Advantageously, the interview is extended, from side of the second connecting means, by a tongue having a length corresponding to the width of a beam.

Selon une configuration préférée de l'invention, le premier moyen de liaison est constitué par un épaulement présentant à sa surface inférieure une rainure positionnée pour l'engagement du bord du talon d'une poutrelle.According to a preferred configuration of the invention, the first connecting means is constituted by a shoulder having on its lower surface a groove positioned for heel edge engagement a beam.

Avantageusement, la largeur de l'épaulement du premier moyen de liaison correspond à la largeur du talon.Advantageously, the width of the shoulder of the first connecting means corresponds to the width of the heel.

Avantageusement, le premier moyen de liaison est constitué par une découpe latérale dont la surface supérieure forme par l'épaulement et dont la hauteur correspond à la hauteur de la languette prolongeant l'entrevous du côté opposé.Advantageously, the first connection means consists of a lateral cutout whose surface superior shape by the shoulder and whose height corresponds to the height of the tongue extending the interjoists on the opposite side.

Concernant la configuration du deuxième moyen de liaison, le deuxième moyen de liaison est constitué par une fente présentant une section correspondant sensiblement à la section du talon des poutrelles, et une profondeur correspondant à la largeur du talon des poutrelles.Regarding the configuration of the second plea the second connecting means is constituted by a slot with a corresponding section substantially at the section of the heel of the beams, and a depth corresponding to the width of the heel of beams.

Avantageusement, la fente présente une lèvre formant avec le plan horizontal un angle permettant le positionnement sur le talon d'une poutrelle par un glissement de l'entrevous en biais, selon une inclinaison déterminée pour autoriser le passage de l'entrevous entre deux poutrelles consécutives. Advantageously, the slot has a lip forming with the horizontal plane an angle allowing the positioning on the heel of a beam by a slip of the interjoists at an angle, according to an inclination determined to allow the passage of the interjoists between two consecutive beams.

Avantageusement, le deuxième moyen de liaison est constitué par une fente dont la section, dans la partie opposée à l'ouverture, présentant une surface supérieure inclinée selon un angle correspondant à l'inclinaison du bord latéral du talon des poutrelles.Advantageously, the second connecting means is constituted by a slot whose section, in the part opposite the opening, having a surface upper inclined at an angle corresponding to the inclination of the lateral edge of the heel of the beams.

Avantageusement, la rainure et/ou la fente présente(nt) un évidement en son (leur) sommet afin d'éviter le contact du bord du talon.Advantageously, the groove and / or the slot present (s) a recess in its (their) summit so avoid contact with the edge of the heel.

Selon une configuration avantageuse de l'invention, lesdits moyens de liaison présentent respectivement des encoches de marquage.In an advantageous configuration of the invention, said connecting means respectively marking notches.

La présente invention se rapporte également à un système de coffrage, notamment pour la formation de plancher ou de plafond.The present invention also relates to a formwork system, especially for the formation of floor or ceiling.

Ledit système de coffrage est constitué par une pluralité de poutrelles disposées parallèlement, chaque poutrelle présentant deux talons longitudinaux, et par une pluralité d'entrevous présentant chacune un premier moyen de liaison lequel est constitué par un épaulement dont la surface inférieure est propre à venir en appui sur la surface supérieure du talon d'une poutrelle, et un deuxième moyen de liaison lequel est constitué par une fente latérale dont la forme est propre à permettre l'insertion d'une partie au moins du talon d'une poutrelle.The formwork system is constituted by a plurality of beams arranged in parallel, each beam having two longitudinal heels, and by a plurality of interjoists each presenting a first connecting means which consists of a shoulder whose lower surface is clean to come resting on the upper surface of the heel of a beam, and a second connecting means which is constituted by a lateral slot whose shape is clean to allow insertion of at least a portion of the heel a beam.

On comprendra mieux l'invention à l'aide de la description, faite ci-après à titre purement explicatif, d'un mode de réalisation de l'invention, en référence aux figures annexées :

  • la figure 1 illustre une vue en coupe d'un entrevous selon l'invention positionné entre deux poutrelles ;
  • la figure 2 illustre une vue en coupe de l'entrevous seul de la figure 1 ;
  • les figures 3a à 3c illustrent le principe de la pose de l'entrevous entre deux poutrelles ; et
  • les figures 4a et 4b illustrent respectivement une vue en coupe partielle et une vue longitudinale de deux entrevous d'extrémité positionnés autour d'une poutrelle.
The invention will be better understood from the following description, given purely for explanatory purposes, of one embodiment of the invention, with reference to the appended figures:
  • Figure 1 illustrates a sectional view of a interjoists according to the invention positioned between two beams;
  • Figure 2 illustrates a sectional view of the interjoists only of Figure 1;
  • Figures 3a to 3c illustrate the principle of the installation of interjoists between two beams; and
  • Figures 4a and 4b respectively show a partial sectional view and a longitudinal view of two end interjoists positioned around a beam.

La présente invention a pour objet un entrevous (1) adapté pour venir se positionner entre deux poutrelles (2, 3) constituées par une feuille en acier plié, comme par exemple en tôle galvanisée, lesdites poutrelles étant équidistantes l'une de l'autre (figure 1) .The present invention relates to a interjoists (1) adapted to be positioned between two beams (2, 3) made of steel sheet folded, such as galvanized sheet, said beams being equidistant from one another (figure 1).

Plus particulièrement, ledit entrevous (1), lorsqu'il est en place, repose sur le talon (4) de chacune des poutrelles (2, 3).More particularly, said interjoists (1), when in place, rest on the heel (4) of each beams (2, 3).

Les talons des poutrelles en acier plié ont la caractéristique de présenter un bord constituant une zone de retour (5).The heels of the folded steel beams have the characteristic of having an edge constituting a zone back (5).

L'entrevous (1), illustré sur la figure 2, comporte deux moyens de liaison (6, 7) en vue de son positionnement entre les deux poutrelles (2, 3).The interjoists (1), illustrated in FIG. comprises two connecting means (6, 7) for its positioning between the two beams (2, 3).

Le premier moyen de liaison (6) consiste en une découpe longitudinale formant un épaulement (8) dont la surface inférieure (9) est propre à venir en appui sur la surface supérieure du talon (4) de la poutrelle (2).The first link means (6) consists of a longitudinal cut forming a shoulder (8) the lower surface (9) is adapted to bear on the upper surface of the heel (4) of the beam (2).

Plus précisément, la surface inférieure (9) dudit épaulement présente une rainure (10) longitudinale. Cette rainure (10) est disposée sur la surface inférieure de l'épaulement (8) de telle sorte à recevoir la zone de retour (5) constituant le talon (4) de la poutrelle (2).More specifically, the lower surface (9) said shoulder has a longitudinal groove (10). This groove (10) is disposed on the lower surface shoulder (8) so as to receive the zone of return (5) constituting the heel (4) of the beam (2).

Ladite rainure (10) sera configurée pour permettre une mise en place et un retrait aisés entre lesdites poutrelles (2, 3). Elle présentera avantageusement une section triangulaire. De plus, la rainure (10) présente un évidemment (19) en son sommet pour éviter tout contact avec l'extrémité du talon (4). Ceci a pour but d'éviter ou de retarder l'amorce de rupture engendrée lors de la mise en charge par le contact du profil tranchant de la poutrelle (2) sur l'entrevous (1) .Said groove (10) will be configured to allow easy set-up and removal between said beams (2, 3). She will introduce advantageously a triangular section. In addition, the groove (10) has a recess (19) at its top to avoid contact with the end of the heel (4). This is to avoid or delay the initiation of rupture generated during loading by the contact the cutting edge of the beam (2) on the interjoists (1).

Avantageusement, la largeur l1 dudit épaulement (8) aura au moins pour largeur la largeur du talon (4) de ladite poutrelle (2).Advantageously, the width l 1 of said shoulder (8) will at least for width the width of the heel (4) of said beam (2).

Le deuxième moyen de liaison (7) consiste en une fente longitudinale (11) dont la forme est propre à permettre l'insertion d'une partie au moins du talon (4) de la poutrelle (3) équidistante de la poutrelle (2).The second connecting means (7) consists of a longitudinal slot (11) whose shape is adapted to allow insertion of at least a portion of the heel (4) the beam (3) equidistant from the beam (2).

Avantageusement, la fente (11) présente une section correspondant sensiblement à la section du talon (4) de ladite poutrelle (3), et une profondeur correspondant à la largeur dudit talon (4).Advantageously, the slot (11) presents a section corresponding substantially to the section of the heel (4) of said beam (3), and a depth corresponding to the width of said heel (4).

Ladite fente (11) présente en outre une lèvre (12) formant avec le plan horizontal un angle α. Comme nous le verrons un peu plus loin, la lèvre (12) ainsi configurée, permettra le positionnement de l'entrevous (1) entre les deux poutrelles (2, 3) en autorisant le passage du talon (4) de ladite poutrelle (3) dans ladite fente (11) .Said slot (11) further has a lip (12) forming with the horizontal plane an angle α. As we will see it a little further, the lip (12) as well configured, will allow the positioning of the interjoists (1) between the two beams (2, 3) allowing the passage of the heel (4) of said beam (3) in said slot (11).

Afin de conférer au coffrage obtenu par le positionnement d'entrevous entre des poutrelles équidistantes une bonne stabilité, la partie opposée (13) à l'ouverture de ladite fente (11) présente une surface supérieure inclinée (14) selon un angle correspondant à l'inclinaison de la zone de retour (5) du talon (4) de ladite poutrelle (3) par rapport au plan horizontal.In order to give the formwork obtained by the interjoists positioning between joists equidistant good stability, the opposite part (13) at the opening of said slot (11) has a surface inclined top (14) at an angle corresponding to the inclination of the return zone (5) of the heel (4) of said beam (3) with respect to the horizontal plane.

De plus, la fente (11) présente un évidemment (20) en son sommet pour éviter tout contact avec l'extrémité du talon (4). Ceci a pour but d'éviter ou de retarder l'amorce de rupture engendrée lors de la mise en charge par le contact du profil tranchant de la poutrelle (3) sur l'entrevous (1).In addition, the slot (11) has an obvious (20) at the top to avoid any contact with the end of the heel (4). This is to avoid or delay the onset of rupture generated when load by the contact of the cutting edge of the beam (3) on the interjoists (1).

Ledit entrevous (1) est en outre prolongé, du côté du deuxième moyen de liaison (7), par une languette (15) .Said interjoists (1) is further extended, from side of the second connecting means (7), by a tongue (15).

Avantageusement, ladite languette (15) présente une longueur L correspondant sensiblement à la largeur des poutrelles (2, 3).Advantageously, said tongue (15) has a length L substantially corresponding to the width of the beams (2, 3).

Avantageusement, la hauteur h1 de la languette (15) correspond à la hauteur h2 de la découpe latérale constituant le premier moyen de liaison (6).Advantageously, the height h1 of the tongue (15) corresponds to the height h2 of the lateral cutout constituting the first connecting means (6).

Les figures 3a à 3c illustrent le principe de la pose d'un entrevous selon l'invention entre deux poutrelles équidistantes.Figures 3a to 3c illustrate the principle of the installation of a interjoists according to the invention between two equidistant beams.

La languette (15) de l'entrevous (1) est glissée sous la poutrelle (3) de sorte que le talon (4) de ladite poutrelle (3) s'insère dans la fente (11) constituant le deuxième moyen de liaison (7) (figure 3a). Durant cette opération, ledit entrevous (1) est maintenu en position inclinée par rapport au plan horizontal selon une inclinaison déterminée pour autoriser le passage de l'entrevous entre les deux poutrelles (2, 3).The tongue (15) of the interjoists (1) is slid under the beam (3) so that the heel (4) of said beam (3) fits into the slot (11) constituting the second connecting means (7) (Figure 3a). During this operation, said interjoists (1) is maintained in an inclined position relative to the horizontal plane according to a specific inclination to allow the passage of the interjoists between the two beams (2, 3).

Une fois la lèvre (12) du deuxième moyen de liaison (7) au contact de la partie plane du talon (4) de ladite poutrelle (3), l'entrevous (1) est soumis à un mouvement de pivotement en direction du talon (4) de la poutrelle (2), le point de pivotement étant constitué avantageusement par le point de jonction de la lèvre (12) et de la partie supérieure inclinée (14) de ladite fente (11) (figure 3b).Once the lip (12) of the second means of connection (7) in contact with the flat portion of the heel (4) of said beam (3), the interjoists (1) is subjected to a pivoting movement towards the heel (4) of the beam (2), the pivot point being constituted advantageously by the junction point of the lip (12) and the inclined upper portion (14) of said slot (11) (Figure 3b).

Lorsque l'épaulement (8) atteint le talon (4) de ladite poutrelle (2), la zone de retour (5) dudit talon (4) vient se loger dans la rainure (10) dudit épaulement (8). Plus précisément, la face supérieure de la zone de retour (5) est plaquée contre l'une des faces de la rainure (10) (figure 3c).When the shoulder (8) reaches the heel (4) of said beam (2), the return zone (5) of said heel (4) is housed in the groove (10) of said shoulder (8). More precisely, the upper face of the zone of back (5) is pressed against one of the faces of the groove (10) (Figure 3c).

Une fois l'entrevous (1) disposé entre les deux poutrelles (2, 3), la partie inférieure ouverte de la poutrelle (3) est obturée par la languette (15).Once the interjoists (1) arranged between the two beams (2, 3), the lower open part of the beam (3) is closed by the tongue (15).

La figure 4a représente une vue en coupe partielle de deux entrevous d'extrémités coopérant autour d'une poutrelle.Figure 4a shows a sectional view partial two extremity interjoists cooperating around a beam.

Selon une configuration avantageuse de l'invention, les moyens de liaison de chaque entrevous peuvent présenter des encoches (16) de marquage.In an advantageous configuration of the invention, the connecting means of each interjoists may have notches (16) for marking.

Ces encoches (16) servent à marquer l'emplacement où doit être effectué la formation d'une gorge dans l'épaisseur de l'entrevous lorsque l'entrevous à positionner est un entrevous d'extrémité. En effet, les entrevous d'extrémité doivent se positionner contre des supports (17) supportant les poutrelles, lesdits supports présentant au moins une branche inférieure (18). Lorsqu'on vient positionner l'entrevous d'extrémité, la branche inférieure (18) dudit support (17) pénètre dans la gorge formée à cet effet dans ledit entrevous (1), à une hauteur correspondant à la hauteur marquée par lesdites encoches (16).These notches (16) serve to mark the location where the formation of a throat in the thickness of the interjoists when interjoists to position is an end interjoists. Indeed, end-users must position themselves against supports (17) supporting the beams, said supports having at least one lower branch (18). when comes to position the end interjoists, the branch lower (18) of said support (17) enters the throat formed for this purpose in said interjoists (1), at a height corresponding to the height marked by said notches (16).

L'invention est décrite dans ce qui précède à titre d'exemple. Il est entendu que l'homme du métier est à même de réaliser différentes variantes de l'invention sans pour autant sortir du cadre du brevet.The invention is described in the foregoing at as an example. It is understood that the skilled person is able to realize different variants of the invention without departing from the scope of the patent.

Claims (9)

Entrevous (1) constitué par une plaque en matière plastique alvéolaire, présentant des moyens de liaison (6, 7) avec deux poutrelles (2, 3) en matériau plié, le premier moyen de liaison (6) étant constitué par un épaulement (8) dont la surface inférieure (9) est propre à venir en appui sur la surface supérieure du talon (4) d'une poutrelle (2, 3), et le deuxième moyen de liaison (7) étant constitué par une fente latérale (11) dont la forme est propre à permettre l'insertion d'une partie au moins du talon (4) d'une poutrelle (3, 2) caractérisé en ce que ledit épaulement (8) présente à sa surface inférieure (9) une rainure (10) positionnée pour l'engagement du bord du talon (4) d'une poutrelle (2, 3) et en ce que la section de ladite fente (11) présente, dans la partie opposée à l'ouverture, une surface supérieure inclinée (14) selon un angle correspondant à l'inclinaison du bord latéral du talon (4) des poutrelles (3, 2).Entrevous (1) constituted by a cellular plastic plate, having connecting means (6, 7) with two beams (2, 3) of folded material, the first connecting means (6) being constituted by a shoulder (8 ) whose lower surface (9) is adapted to rest on the upper surface of the heel (4) of a beam (2, 3), and the second connecting means (7) being constituted by a lateral slot (11). ) whose shape is adapted to allow insertion of at least a portion of the heel (4) of a beam (3, 2) characterized in that said shoulder (8) has at its lower surface (9) a groove (10) positioned for engagement of the heel edge (4) of a beam (2, 3) and in that the section of said slot (11) has, in the portion opposite the opening, an upper surface inclined (14) at an angle corresponding to the inclination of the lateral edge of the heel (4) of the beams (3, 2). Entrevous (1) selon la revendication 1, caractérisé en ce qu'il est prolongé, du côté du deuxième moyen de liaison (7), par une languette (15) présentant une longueur correspondant au moins à la largeur d'une poutrelle (3, 2).Interlock (1) according to claim 1, characterized in that it is extended, on the side of the second connection means (7), by a tongue (15) having a length corresponding to at least the width of a beam (3). , 2). Entrevous (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que la largeur l1 de l'épaulement (4) du premier moyen de liaison (6) correspond au moins à la largeur du talon (4).Entrevous (1) according to any one of the preceding claims, characterized in that the width l 1 of the shoulder (4) of the first connecting means (6) corresponds at least to the width of the heel (4). Entrevous (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le premier moyen de liaison (6) est constitué par une découpe longitudinale dont la surface supérieure (9) forme l'épaulement (8) et dont la hauteur correspond à la hauteur de la languette (15) prolongeant l'entrevous (1) du côté opposé.Interlock (1) according to any one of the preceding claims, characterized in that the first connecting means (6) is constituted by a longitudinal cut whose upper surface (9) forms the shoulder (8) and whose height corresponds at the height of the tongue (15) extending the interjoists (1) on the opposite side. Entrevous (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le deuxième moyen de liaison est constitué par une fente (11) présentant une section correspondant sensiblement à la section du talon (4) des poutrelles (2, 3), et une profondeur correspondant à la largeur du talon (4) des poutrelles (2, 3).Entrevous (1) according to any one of the preceding claims, characterized in that the second connecting means is constituted by a slot (11) having a section corresponding substantially to the section of the heel (4) of the beams (2, 3) , and a depth corresponding to the width of the heel (4) of the beams (2, 3). Entrevous (1) selon la revendication précédente, caractérisé en ce que la fente (11) présente une lèvre (12) formant avec le plan horizontal un angle α permettant le positionnement sur le talon (4) d'une poutrelle (3, 2) par un glissement de l'entrevous (1) en biais, selon une inclinaison déterminée pour autoriser le passage de l'entrevous (1) entre deux poutrelles consécutives.Interlock (1) according to the preceding claim, characterized in that the slot (11) has a lip (12) forming with the horizontal plane an angle α for positioning on the heel (4) of a beam (3, 2) by sliding the interjoists (1) obliquely, according to a given inclination to allow the passage of interjoists (1) between two consecutive beams. Entrevous selon l'une quelconque des revendications précédentes, caractérisé en ce que la rainure (10) et/ou la fente (11) présente(nt) un évidement (19, 20) en son (leur) sommet afin d'éviter le contact du bord du talon (4).Interlock according to one of the preceding claims, characterized in that the groove (10) and / or the slot (11) has a recess (19, 20) at its top to avoid contact. the edge of the heel (4). Entrevous (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que lesdits moyens de liaison (6, 7) présentent des encoches (16) de marquage. Entrevous (1) according to any one of the preceding claims, characterized in that said connecting means (6, 7) have notches (16) marking. Système de coffrage, notamment pour la formation de plancher ou de plafond, caractérisé en ce qu'il est constitué par une pluralité de poutrelles disposées parallèlement, chaque poutrelle présentant deux talons longitudinaux, et par une pluralité d'entrevous présentant chacune un premier moyen de liaison lequel est constitué par un épaulement dont la surface inférieure est propre à venir en appui sur la surface supérieure du talon d'une poutrelle, et un deuxième moyen de liaison lequel est constitué par une fente latérale dont la forme est propre à permettre l'insertion d'une partie au moins du talon d'une poutrelle.Formwork system, particularly for the formation of floor or ceiling, characterized in that it consists of a plurality of beams arranged in parallel, each beam having two longitudinal heels, and a plurality of interstices each having a first means of link which is constituted by a shoulder whose lower surface is adapted to bear on the upper surface of the heel of a beam, and a second connecting means which is constituted by a lateral slot whose shape is adapted to allow the insertion of at least a portion of the heel of a beam.
EP05291340A 2004-06-23 2005-06-22 Formwork made of foamed plastic material for beams made of folded steel sheet Withdrawn EP1609923A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0406837A FR2872187B1 (en) 2004-06-23 2004-06-23 ALVEOLAIRE PLASTIC MATERIALS FOR PLATED STEEL BEAMS
FR0406837 2004-06-23

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EP1609923A1 true EP1609923A1 (en) 2005-12-28

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FR (1) FR2872187B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2444058A (en) * 2006-11-21 2008-05-28 Rackham Housefloors Ltd Floor construction method and flooring panel therefore
WO2009109893A2 (en) * 2008-03-04 2009-09-11 Angelo Candiracci Panel for the construction of a structure resistant to bending such as a floor or the like

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1127798A (en) * 1955-07-20 1956-12-24 Floor
DE2053532A1 (en) * 1969-11-05 1971-05-13 Leitl, Karl, Dipl Ing , Linz (Osterreich) Packing for supporting structures
FR2146991A1 (en) * 1971-07-29 1973-03-09 Isobox Prefabricated expanded plastics boarding - with a profile having complimentary edges for resting on and masking supper
FR2202211A1 (en) * 1972-10-06 1974-05-03 Isobox Sa Expanded polystyrene profile for flooring or ceiling infills - incorporating fixtures for supporting suspended cladding without overloading the profile
FR2223528A1 (en) * 1973-03-30 1974-10-25 Saret Hollow floor construction with polystyrene blocks - blocks span main beams and incorporate hangers for hanging ceiling below
FR2367162A1 (en) * 1976-10-08 1978-05-05 Costamagna & Cie B M Insulating infill fitting between floor beams - has overlapping tongue and notch which conceals undersurface of beam
FR2388467A7 (en) * 1977-04-20 1978-11-17 Apemilano Polistirol Lightweight floor and ceiling construction element - has synthetic core with mating protrusions and recesses at opposite ends acting as concrete formwork
FR2507229A1 (en) * 1981-06-04 1982-12-10 Leclainche Prosper Cement-lined ceiling panels with interfacial key slots - to carry the lining beneath an expanded polystyrene body
FR2606323A1 (en) * 1986-07-08 1988-05-13 Valeo Component made of cellular plastic, especially a structural component such as a cavity-wall block, having improved flexural and tear strength and method for obtaining such a component
FR2626030A1 (en) * 1988-01-20 1989-07-21 Isobox Sa Insulating floor void in expanded plastic material, such as polystyrene or similar
FR2829780A1 (en) * 2001-09-18 2003-03-21 B D I Sas Floor cavity high performance insulating block comprising an upper surface with transverse ribs lying parallel to block end faces

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1127798A (en) * 1955-07-20 1956-12-24 Floor
DE2053532A1 (en) * 1969-11-05 1971-05-13 Leitl, Karl, Dipl Ing , Linz (Osterreich) Packing for supporting structures
FR2146991A1 (en) * 1971-07-29 1973-03-09 Isobox Prefabricated expanded plastics boarding - with a profile having complimentary edges for resting on and masking supper
FR2202211A1 (en) * 1972-10-06 1974-05-03 Isobox Sa Expanded polystyrene profile for flooring or ceiling infills - incorporating fixtures for supporting suspended cladding without overloading the profile
FR2223528A1 (en) * 1973-03-30 1974-10-25 Saret Hollow floor construction with polystyrene blocks - blocks span main beams and incorporate hangers for hanging ceiling below
FR2367162A1 (en) * 1976-10-08 1978-05-05 Costamagna & Cie B M Insulating infill fitting between floor beams - has overlapping tongue and notch which conceals undersurface of beam
FR2388467A7 (en) * 1977-04-20 1978-11-17 Apemilano Polistirol Lightweight floor and ceiling construction element - has synthetic core with mating protrusions and recesses at opposite ends acting as concrete formwork
FR2507229A1 (en) * 1981-06-04 1982-12-10 Leclainche Prosper Cement-lined ceiling panels with interfacial key slots - to carry the lining beneath an expanded polystyrene body
FR2606323A1 (en) * 1986-07-08 1988-05-13 Valeo Component made of cellular plastic, especially a structural component such as a cavity-wall block, having improved flexural and tear strength and method for obtaining such a component
FR2626030A1 (en) * 1988-01-20 1989-07-21 Isobox Sa Insulating floor void in expanded plastic material, such as polystyrene or similar
FR2829780A1 (en) * 2001-09-18 2003-03-21 B D I Sas Floor cavity high performance insulating block comprising an upper surface with transverse ribs lying parallel to block end faces

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2444058A (en) * 2006-11-21 2008-05-28 Rackham Housefloors Ltd Floor construction method and flooring panel therefore
GB2444058B (en) * 2006-11-21 2008-11-12 Rackham House Floors Ltd Floor construction method
WO2009109893A2 (en) * 2008-03-04 2009-09-11 Angelo Candiracci Panel for the construction of a structure resistant to bending such as a floor or the like
WO2009109893A3 (en) * 2008-03-04 2009-12-17 Angelo Candiracci Panel for the construction of a structure resistant to bending and a method of constructing such a structure

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FR2872187B1 (en) 2008-04-04

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