EP1564340B1 - Elément d'entrevous - Google Patents

Elément d'entrevous Download PDF

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Publication number
EP1564340B1
EP1564340B1 EP05290247A EP05290247A EP1564340B1 EP 1564340 B1 EP1564340 B1 EP 1564340B1 EP 05290247 A EP05290247 A EP 05290247A EP 05290247 A EP05290247 A EP 05290247A EP 1564340 B1 EP1564340 B1 EP 1564340B1
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EP
European Patent Office
Prior art keywords
walls
element according
rims
interjoists
concrete
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP05290247A
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German (de)
English (en)
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EP1564340A1 (fr
Inventor
Jean Roux
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KP1 SAS
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KP1 SAS
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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
    • 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

Definitions

  • the present invention relates to a interjoist element for completing a formwork lost a horizontal concrete structure, particularly at the connection of this structure with a vertical wall.
  • An element according to the preamble of claim 1 is described in FR-A-2,600,098 .
  • the field of the invention is illustrated in particular by the document WO-A-00/31355 which describes plastic interstices forming a formwork lost and thin-walled.
  • This document describes a tympanic device that adjusts the realization of the formwork to the dimensions of the surface to be covered and in particular the length of this surface.
  • the use of a tympanum is, as explained in this document, suitable for constructions in which the end of the support beams of the floors is contained in a plane substantially perpendicular to the longitudinal dimension of these beams.
  • the support structures formed by these beams may end on walls or walls that are slanted with respect to the longitudinal direction of the beams, and in these conditions neither the eardrum nor even the interjoists described in the document. cited do not allow to achieve a surface capable of receiving a compression slab, that is to say liquid concrete.
  • the invention proposes a interjoists element intended to complete a lost formwork of a cast concrete horizontal structure, in particular at the connection of this structure with a vertical wall, which element is constituted by a tray open upwards, in thin wall, having two flanges for its support on two parallel floor beams, two end walls provided with overlapping means complementary to each other, and an internal partitioning stiffening and welcome liquid concrete.
  • the internal partitioning comprises walls perpendicular to the aforementioned edges, formed by a double U-shaped wall open towards the bottom, defining transverse boxes joined together by rear walls between the walls of Each U.
  • Virtually transverse beams are made between two support beams interjoists, which are very closely spaced from each other. These transverse beams, even when they are cut at an angle and they find a support on a support wall along this bias, are rigid enough to rest properly on this support to support the concrete that will be poured over interjoists and to ensure the tightness of this support.
  • each flange of the element which serves to support it on a beam is remote from the bottom of the tank of this element by a height substantially equal to the thickness of the beam measured under the flange.
  • the beams are based on a vertical end structure, when one sets up the interjoists element according to the invention, the latter also rests by the bottom of its tray on the same support as that of the beams. which makes it possible to have a large contact surface between this end support and this interjoistic element, and thus favorable to good retention of the concrete.
  • the modular element of interjoists shown in Figures 1 and 2 has the shape of a rectangular tray 1 with two parallel longitudinal sides provided with flanges 2 and 3 and two transverse sides 4 and 5 provided with means 6, 7 arranged in correspondence for overlap. This will be for example a gutter such as 6 turned down and a gutter such as 7 turned upwards.
  • the edges 2 and 3 as illustrated in the figure, serve to rest each interjoists element on beams 24, 25 which form the frame of a floor of a building.
  • These flanges define the longitudinal direction of the interjoister element although in this direction, for the example shown, the dimension is smaller than the transverse dimension of the element which is in turn dictated by the normalized spacing of the elements. beams 24 and 25.
  • the internal space of the tray 1 is partitioned.
  • This internal partition has two types of walls, one longitudinal 9 formed of a single thickness, and the other 10 formed of a double wall defining a U open towards the back or the bottom of the interjoists this U thus having two faces facing each other noted 11 and 12, and rear walls 13 which bring them together.
  • Tray 1 is here divided by these three double walls 10 in four transverse boxes which recall on a smaller scale the caissons interjoists described in the document recalled in the preamble of the present description. The presence in this case of four walls 9 thus defines, with the three double walls 10, a set of twenty compartments.
  • each of the compartments defined by the partitioning 8 (here the interjoin element has twenty compartments), has a surface texturing that is to say reliefs in the form of grooves 14, or in the form of networks ribs 15, or in the form of fins 16, which have the effect of creating a connection between the plastic material and the cast concrete inside such that this plastic material, essentially flammable, does not participate in the propagation of a fire.
  • an interjoists 20 are disposed between two heel joists 24 and 25, and an interjoists 21 hooked to the interjoists 20 by cooperation of the complementary means 6 and 7 described above, the latter between you being cut in half. bias in a plane 22 to be adjusted to a vertical wall 23 located in this plane.
  • This wall 23 comprises a support 23a, which is a board on which the biased end of the beams 24 and 25 is based.
  • the interjoists 21 also rests on the ledge 23a of the wall 23. the support of this and other interjoists interjoists is then extremely firm, and one can easily make a concrete casting to achieve such a compression slab.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
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  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
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  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)

Description

  • La présente invention concerne un élément d'entrevous destiné à compléter un coffrage perdu d'une structure horizontale en béton, en particulier au niveau du raccordement de cette structure avec une paroi verticale. Un élément selon le préambule de la revendication 1 est décrit dans FR-A-2 600 098 .
  • Le domaine de l'invention est illustré notamment par le document WO-A-00/31355 qui décrit des entrevous en matière plastique formant coffrage perdu et à paroi mince. Ce document décrit un dispositif de tympan qui permet d'ajuster la réalisation du coffrage aux dimensions de la surface à couvrir et notamment la longueur de cette surface. L'usage d'un tympan est, comme expliqué dans ce document, adapté à des constructions dans lesquelles l'extrémité des poutrelles de soutien des planchers est contenue dans un plan sensiblement perpendiculaire à la dimension longitudinale de ces poutrelles. Il n'est pas rare cependant que les structures de soutien que forment ces poutrelles puissent aboutir sur des murs ou parois en biais par rapport à la direction longitudinale des poutrelles, et dans ces conditions ni le tympan ni même l'entrevous décrit dans le document cité ne permettent de réaliser une surface apte à recevoir une dalle de compression, c'est-à-dire du béton liquide.
  • Pour satisfaire ce besoin, l'invention propose un élément d'entrevous destiné à compléter un coffrage perdu d'une structure horizontale en béton coulé, en particulier au niveau du raccordement de cette structure avec une paroi verticale, élément qui est constitué par un bac ouvert vers le haut, en paroi mince, comportant deux rebords destinés à son appui sur deux poutrelles parallèles de plancher, deux cloisons d'extrémité pourvues de moyens de chevauchement complémentaires l'un de l'autre, et un cloisonnement interne de raidissage et d'accueil du béton liquide.
  • Il s'agit là d'un élément d'entrevous très rainuré et très compartimenté, si bien que sa raideur n'est que peu affectée par une coupe biaise. En particulier, dans un but de plus grande raideur encore, le cloisonnement interne comprend des parois perpendiculaires aux rebords susdits, formées par une double paroi en U ouvert vers le bas, délimitant des caissons transversaux réunis entre eux par des cloisons arrière entre les parois de chaque U. On réalise pratiquement des poutres transversales entre deux poutrelles de soutien des entrevous, qui sont très peu espacées les unes des autres. Ces poutres transversales, même lorsqu'elles sont coupées en biais et qu'elles retrouvent un appui sur une paroi de support le long de ce biais, sont suffisamment rigides pour reposer correctement sur cet appui afin de supporter le béton qui sera coulé par-dessus les entrevous et d'assurer l'étanchéité de ce support.
  • De manière préférée, chaque rebord de l'élément qui sert à son appui sur une poutrelle est distant du fond du bac de cet élément d'une hauteur sensiblement égale à l'épaisseur de la poutrelle mesurée sous le rebord. Ainsi, comme les poutrelles reposent sur une structure verticale d'extrémité, lorsque l'on met en place l'élément d'entrevous selon l'invention, ce dernier repose également par le fond de son bac sur le même support que celui des poutrelles, ce qui permet de disposer d'une surface de contact importante entre cet appui d'extrémité et cet élément d'entrevous, et donc favorable à une bonne retenue du béton.
  • D'autres caractéristiques et avantages de l'invention ressortiront d'un exemple de sa réalisation donné ci-après à titre purement indicatif.
  • Il sera fait référence aux dessins annexés parmi lesquels :
    • la figure 1 est une vue de dessus d'un élément d'entrevous conforme à l'invention,
    • la figure 2 est une vue de dessous de cet élément,
    • la figure 3 est une représentation de deux éléments d'entrevous selon l'invention, dont un est coupé en biais, entre deux poutrelles de soutien d'entrevous et notamment d'entrevous conformes à ceux décrits dans le document rappelé en préambule de la présente description.
  • L'élément modulaire d'entrevous représenté aux figures 1 et 2 affecte la forme d'un bac rectangulaire 1 avec deux côtés longitudinaux parallèles pourvus de rebords 2 et 3 et deux côtés transversaux 4 et 5 pourvus de moyens 6, 7 agencés en correspondance pour se chevaucher. Ce seront par exemple une gouttière telle que 6 tournée vers le bas et une gouttière telle que 7 tournée vers le haut. Les rebords 2 et 3 comme illustrés par la figure, servent à faire reposer chaque élément d'entrevous sur des poutrelles 24, 25 qui forment l'armature d'un plancher d'une construction. Ces rebords définissent la direction longitudinale de l'élément d'entrevous bien que dans cette direction, pour l'exemple représenté, la dimension soit plus petite que la dimension transversale de l'élément qui est quant à elle dictée par l'espacement normalisé des poutrelles 24 et 25.
  • On remarque aux figures que l'espace interne du bac 1 est cloisonné. Ce cloisonnement interne, noté 8, comporte deux types de parois, les unes 9 longitudinales formées d'une simple épaisseur, et les autres 10 transversales formées d'une paroi double définissant un U ouvert vers l'arrière ou le bas de l'entrevous, ce U comportant donc deux faces en regard l'une de l'autre notées 11 et 12, et des cloisons arrière 13 qui les réunissent. Le bac 1 est donc ici divisé par ces trois parois doubles 10 en quatre caissons transversaux qui rappellent à une échelle plus petite les caissons des entrevous décrits dans le document rappelé au préambule de la présente description. La présence en l'espèce de quatre parois 9 définit donc, avec les trois parois doubles 10, un ensemble de vingt compartiments.
  • La surface de chacun des compartiments défini par le cloisonnement 8 (ici l'élément d'entrevous comporte vingt compartiments), possède une texturation de surface c'est-à-dire des reliefs soit sous forme de rainures 14, soit sous forme de réseaux de nervures 15, soit sous forme d'ailettes 16, qui ont pour effet de créer une liaison entre la matière plastique et le béton coulé à l'intérieur telle que cette matière plastique, essentiellement inflammable, ne participe pas à la propagation d'un incendie.
  • A la figure 3, on a disposé un entrevous 20 entre deux poutrelles à talon 24 et 25, et un entrevous 21 accroché à l'entrevous 20 par coopération des moyens complémentaires 6 et 7 décrits ci-dessus, ce dernier entrevous 21 étant coupé en biais dans un plan 22 afin d'être ajusté à une paroi verticale 23 située dans ce plan. Cette paroi 23 comporte un appui 23a, qui est un bord sur lequel l'extrémité biaise des poutres 24 et 25 repose. De la même manière, et parce que la distance séparant le fond 1a de l'entrevous et ses rebords 2 et 3 est égale à l'épaisseur e du talon de la poutrelle située sous le rebord correspondant, l'entrevous 21 repose également sur le rebord 23a de la cloison 23. Le soutien de cet entrevous et des autres entrevous est alors extrêmement ferme, et on peut effectuer aisément une coulée de béton pour réaliser par exemple une dalle de compression.

Claims (5)

  1. Elément (20) d'entrevous, destiné à compléter un coffrage perdu d'une structure horizontale en béton, en particulier au niveau du raccordement de cette structure avec une paroi verticale (23) , comprenant un bac (1) ouvert vers le haut, en paroi mince, avec deux rebords (2, 3) destinés à son appui sur deux poutrelles (24, 25) parallèles de plancher, caractérisé en ce qu'il comporte deux cloisons d'extrémité (4, 5) pourvues de moyens (6, 7) de chevauchement complémentaires l'un de l'autre, et un cloisonnement interne (8) de raidissage et d'accueil du béton liquide.
  2. Elément selon la revendication 1, caractérisé en ce que le cloisonnement (8) interne comprend des parois (10) perpendiculaires aux rebords (2, 3), formées par une double paroi (11, 12) en U ouvert vers le bas, délimitant des caissons transversaux réunis entre eux par des cloisons arrière (13) entre les parois de chaque U.
  3. Elément selon la revendication 1 ou la revendication 2, caractérisé en ce que sa surface destinée à être en contact avec le béton est texturée (14, 15, 16).
  4. Elément selon l'une quelconque des revendications précédentes, caractérisé en ce que sa dimension longitudinale mesurée entre les deux cloisons d'extrémité (4, 5) est au plus égale à la dimension transversale mesurée entre ses deux rebords (2 et 3), et en ce que le cloisonnement interne (8) définit vingt compartiments.
  5. Elément selon l'une quelconque des revendications précédentes, caractérisé en ce que chaque rebord (2, 3) pour son appui sur une poutrelle, est distant du fond (1a) du bac (1) d'une hauteur sensiblement égale à l'épaisseur (e) de la poutrelle (24, 25) mesurée sous le rebord.
EP05290247A 2004-02-10 2005-02-04 Elément d'entrevous Expired - Lifetime EP1564340B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0401263 2004-02-10
FR0401263A FR2866041B1 (fr) 2004-02-10 2004-02-10 Element d'entrevous

Publications (2)

Publication Number Publication Date
EP1564340A1 EP1564340A1 (fr) 2005-08-17
EP1564340B1 true EP1564340B1 (fr) 2007-12-19

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EP05290247A Expired - Lifetime EP1564340B1 (fr) 2004-02-10 2005-02-04 Elément d'entrevous

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EP (1) EP1564340B1 (fr)
AT (1) ATE381648T1 (fr)
DE (1) DE602005003859D1 (fr)
ES (1) ES2297641T3 (fr)
FR (1) FR2866041B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3144177B1 (fr) 2022-12-23 2025-07-18 Edilteco France Entrevous à parois minces réversible

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2347502A1 (fr) * 1976-04-08 1977-11-04 Isobox Barbier Sa Element de plancher prefabrique en matiere plastique et plancher comportant cet element
FR2600098B2 (fr) * 1985-10-16 1989-08-25 Usinage Tubes Pour Electr Hourdis de reservation
FR2786514B1 (fr) 1998-11-26 2001-01-19 Saret France Entrevous a paroi mince
AU5240900A (en) * 1999-06-25 2001-01-31 Ion Muirhead Williams Hollow filler block for a block-and-rib reinforced concrete slab
GB2376478A (en) * 2001-06-11 2002-12-18 Melton Concrete Products Ltd A method of laying a suspended concrete floor
FR2830883A1 (fr) * 2001-10-11 2003-04-18 Jean Pieere Duclos Rapido

Also Published As

Publication number Publication date
ATE381648T1 (de) 2008-01-15
FR2866041A1 (fr) 2005-08-12
ES2297641T3 (es) 2008-05-01
EP1564340A1 (fr) 2005-08-17
FR2866041B1 (fr) 2006-04-28
DE602005003859D1 (de) 2008-01-31

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