EP2055848A1 - Thermal-break device for concrete floor - Google Patents

Thermal-break device for concrete floor Download PDF

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Publication number
EP2055848A1
EP2055848A1 EP08291011A EP08291011A EP2055848A1 EP 2055848 A1 EP2055848 A1 EP 2055848A1 EP 08291011 A EP08291011 A EP 08291011A EP 08291011 A EP08291011 A EP 08291011A EP 2055848 A1 EP2055848 A1 EP 2055848A1
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EP
European Patent Office
Prior art keywords
interjoists
base
face
floor
faces
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.)
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EP08291011A
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German (de)
French (fr)
Inventor
Laurent Abric
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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
    • E04B5/265—Monolithic filling members with one or more hollow cores
    • 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
    • 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
    • E04B5/268—End filling members to be placed between the floor and the wall, e.g. thermal breaks
    • 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
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B2005/322—Floor structures wholly cast in situ with or without form units or reinforcements with permanent forms for the floor edges

Definitions

  • the present invention relates to the construction of buildings and more particularly to a device for thermal interruption between a floor and an exterior wall. It applies here to concrete floors that include a compression slab cast on a structure with joists and interjoists, which is supported on the walls of a building.
  • Such concrete floors are used primarily in the construction of single-family houses whose walls include interior thermal insulation.
  • Such a floor consists of setting up beams of reinforced or prestressed concrete, arranged parallel to each other and at given spacing, so that their respective ends rest on opposite walls of the building. It then involves the establishment of interjoists which are constituted by interlayers, for example concrete or plastic, which are arranged horizontally to rest on the beams and form the space between them. This produces a structure on which is cast the compression slab with a particularly peripheral reinforcement (chaining) of its connection with the walls of the building.
  • Thermal insulation outside the walls is a solution to this problem of thermal bridges. But such a solution is not satisfactory because it is incompatible with current constructive solutions, particularly with regard to the durability of the assembly of the materials used, without addressing the issue of costs.
  • the transverse breakers when used with expanded polystyrene interjoists, have a horizontal tab facing the last full interjoists span which cooperates end to end with him without much guarantee of tightness or good mechanical strength at the point of their contact, except to proceed to a particular cut of the interjoists on site, a little complex, which constitutes a source of error and a consumption of time.
  • FR 2 829 780 high-performance insulating interjoists comprising, among other characteristics, two longitudinal end faces, one of which comprises a cavity, while the other comprises a complementary extension of shape, to respectively form a female interlock and a male interlocking.
  • This interlocking makes it possible to make an effective connection between two successive interjoists and, as for a interjoists at the end of the span, to provide a third support on the adjacent interjoists in addition to the lateral supports on two adjacent beams. This considerably improves the resistance capacity of the interjoists vis-à-vis the movement of site personnel
  • the present invention relates to a means for producing a floor for both providing thermal insulation by breaking thermal bridges between a floor and a lateral support wall of the floor at the ends of beams, particularly suitable for interjoists. expanded polystyrene such as those described in FR 2 829 780 and provide assured support for these interjoists at the end of a span.
  • the object of the invention is a floor having several bays each defined by two parallel support beams on the one hand for a plurality of interjoists each having two longitudinal end faces, one of which comprises one cavity, while the other comprises a complementary extension of shape, to form respectively a female socket and a male socket, longitudinal cells of chosen shape opening into said cavity and, secondly, for a bridge breaking element thermal being in the form of a body having two substantially parallel faces joined by a song perpendicular to these faces, which defines a profile similar to that of the interjoists, and whose width corresponds to the substantially constant thickness of the body , the aforesaid profile being partially trapezoid-shaped with a small upper base and a large base extended downward by a foot narrowed, with the ends of the large base being then cantilevered on either side of the base, characterized in that the small base of the trapezium is surmounted by a cap constituting the breaker proper, in that one face of the element is provided with supporting crows
  • this insulating element is set up in the same way that a polystyrene interjoists that is to say that on the one hand, the two corbelled parts on the base and the songs of this base are consistent to abut on two heels respectively belonging to the two beams defining the span and that, on the other hand, the crows and the trough of the end faces of the thermal breaker allow the interlocking of the ends of the interjoists line, interlocking who participates in supporting these ends.
  • the breaker elements used in the floor according to the invention have a function of supporting inter-bay end, which does not exist in any known breaker.
  • the floor of the invention also comprises insulating elements of the state of the art along the walls parallel to the beams.
  • the floor is substantially thermally dissociated support walls that support it and, in particular, the chaining that is incorporated in the wall during the formwork of the compression slab.
  • the cap height of the insulating element is chosen according to the thickness of the floor to be manufactured.
  • the interjoists and the insulating element have a base secured to a lower beam-shaped portion protruding beyond one of said corbels and in that the dimension of the beam, in its part under the corbel is of length substantially equal to the width of a beam so that the lower face of this beam is covered by the insulating beam.
  • a floor to which the invention applies is described in the document EP 1 434 920 . It comprises a structure formed by a series of reinforced or prestressed concrete beams which are arranged parallel to each other and to the longitudinal walls with a defined center distance. These beams have a chosen length adapted to the distance between the two transverse walls and come to rest by their respective ends on these transverse walls. Between the beams, are arranged interjoists which are those represented in Figures 3 and 4 .
  • interjoists 1 are expanded polystyrene with a main body 2 whose section is generally trapezoid-shaped resting by a tapered base 3, located under its large base, on a base plate 4, a lateral portion 4a overflowing the large base trapezoidal body.
  • the lateral ends of the large base of the trapezoidal body form lateral corbels through which the interjoists are supported on two parallel beams that define a span to fill and more precisely, on the heel of each of them.
  • Part 4a of the base plate then extends under the lower face of one of the two beams so as to completely cover and come into contact with its side edge 4b with the side edge 4c of a interjoists placed on the adjacent span.
  • each interoffice comprises two end faces 5 and 6 which, in known manner, are one 5, provided with a projection 5a and the other 6 provided with a recess 6a designed to receive the projection 5a.
  • the trapezoidal body 2 and the base 3 are recessed by means of longitudinal and parallel blind housing 7 opening into the recess 6a.
  • the insulating element shown in Figures 1 and 2 has substantially the same profile as that of interjoists, namely a body 10 having two substantially parallel faces 11 and 12 joined by a edge 13 perpendicular to these faces 11, 12, which defines the profile and whose width e corresponds at the substantially constant thickness of this body 10.
  • the aforesaid profile is partly trapezoid-shaped with a small base 14 and a large base extended downwards by a narrowed base 16.
  • the ends 15a and 15b of the large base 15 are then corbelled on both sides.
  • the small base 14 is surmounted by a cap 14a which forms the actual breaker and whose height h will be a function of the thickness of the compression slab above interjoists.
  • the base 16 is integral with a lower portion in the form of a beam 17 protruding beyond one of said corbels 15a and whose abutting faces such as 17a are disposed in line with the faces 11 and 12 of the body trapezoidal and base.
  • the face 11 is provided with two crows 18a and 18b which can, at the assembly, be housed in the hollow 6a, under its upper edge or in the outlets of blind housing 7 if the interjoists are cut transversely.
  • the face 12 is provided with a hollow 12a identical to that 6a of each interjoists so as to accommodate the projecting portion 5a of interjoists.
  • a switch R so that its face 11 is substantially in line with the inner face of the wall transversal which supports the beams. This is achieved by plating the face 17a of the breaker against this inner face of the wall, the corbels 15a and 15b resting on the heels of the beams. The breaker is stabilized against overturning outwardly by the face 17c of the beam which is housed under the beam.
  • the last interjoists are some distance from the opposite transverse wall. If this distance is less than the thickness e of the breaker R, a transverse cutting of the last interjoists is carried out in order to create a residual vacuum in the span of this width and the second breaker is housed therein, in particular by acting on the capacity of the polystyrene. to deform slightly to force the crows 18a, 18b into the housing 6a or 7 which must accommodate them. If the distance is greater than this value of thickness, one adds a last intersected pre-cut to obtain this length of vacuum in the bay.
  • the second switch R rests on the heels of the beams. Its face 12 is exactly located in the plane of inner face of the bearing wall in contact therewith and this contact will provide the seal required for the retention at this level of the concrete pouring of the compression slab.
  • the thickness e of the breaker is of the order of 100 millimeters.
  • the invention finds particular application to the construction of floors for individual houses.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Floor Finish (AREA)

Abstract

The floor has a heat bridge breaker (R) that is in the form of a body (10) and defines a profile as the interjoists e.g. polystyrene interjoists, where the profile is in the form of trapezoid with an upper small base (14) and a large base (15). The small base is surmounted on a bar (14a). A surface of the body is provided with brackets for supporting one hollow end of one interjoist. Another surface (12) of the body has a hollow part (12a) to receive a projection of another end of the interjoist, by interlocking the projection in the hollow part.

Description

La présente invention concerne la construction des bâtiments et plus particulièrement un dispositif d'interruption thermique entre un plancher et un mur extérieur. Elle s'applique ici aux planchers en béton qui comprennent une dalle de compression coulée sur une structure à poutrelles et entrevous, qui prend appui sur des murs d'un bâtiment.The present invention relates to the construction of buildings and more particularly to a device for thermal interruption between a floor and an exterior wall. It applies here to concrete floors that include a compression slab cast on a structure with joists and interjoists, which is supported on the walls of a building.

ARRIERE PLAN DE L'INVENTIONBACKGROUND OF THE INVENTION

De tels planchers en béton sont utilisés essentiellement dans la construction de maisons individuelles dont les murs comprennent une isolation thermique intérieure.Such concrete floors are used primarily in the construction of single-family houses whose walls include interior thermal insulation.

La construction d'un tel plancher consiste à mettre en place des poutrelles en béton armé ou précontraint, disposées parallèlement entre elles et à espacement donné, de sorte que leurs extrémités respectives reposent sur des murs opposés du bâtiment. Elle comporte ensuite la mise en place d'entrevous qui sont constitués par des pièces intercalaires, par exemple en béton ou en matière plastique, qui sont disposées horizontalement pour reposer sur les poutrelles et coffrer l'espace qui les sépare. On réalise ainsi une structure sur laquelle est coulée la dalle de compression avec un ferraillage notamment périphérique (chaînage) de sa liaison avec les murs du bâtiment.The construction of such a floor consists of setting up beams of reinforced or prestressed concrete, arranged parallel to each other and at given spacing, so that their respective ends rest on opposite walls of the building. It then involves the establishment of interjoists which are constituted by interlayers, for example concrete or plastic, which are arranged horizontally to rest on the beams and form the space between them. This produces a structure on which is cast the compression slab with a particularly peripheral reinforcement (chaining) of its connection with the walls of the building.

Ces planchers ont pour inconvénient d'être en continuité thermique avec les murs qui les supportent, ce qui entraîne des pertes de calories élevées. Il en résulte que le bâtiment peut difficilement satisfaire aux règles de plus en plus exigeantes en matière d'économie d'énergie.These floors have the disadvantage of being in thermal continuity with the walls that support them, resulting in high calorie losses. As a result, the building can hardly meet the increasingly demanding rules of energy saving.

L'isolation thermique à l'extérieur des murs est une solution à ce problème de ponts thermiques. Mais une telle solution n'est pas satisfaisante car elle est incompatible avec les solutions constructives actuelles, notamment en ce qui concerne la pérennité de l'assemblage des matériaux mis en oeuvre, sans aborder la question des coûts.Thermal insulation outside the walls is a solution to this problem of thermal bridges. But such a solution is not satisfactory because it is incompatible with current constructive solutions, particularly with regard to the durability of the assembly of the materials used, without addressing the issue of costs.

Il existe des solutions permettant de réduire les ponts thermiques entre une dalle pleine en béton et les murs qui la supportent.There are solutions to reduce thermal bridges between a solid concrete slab and the walls that support it.

L'une d'entre elles est illustrée par le document EP 1 434 920 dans lequel une pluralité d'éléments d'isolation contigus sur le pourtour du plancher forment une barrière isolante entre le béton de la dalle de compression et les murs.One of them is illustrated by the document EP 1 434 920 wherein a plurality of contiguous insulation elements on the perimeter of the floor form an insulating barrier between the concrete of the compression slab and the walls.

Dans ce document, les rupteurs transversaux, lorsqu'ils sont utilisés avec des entrevous en polystyrène expansé, possèdent une languette horizontale tournée vers le dernier entrevous plein de la travée qui coopère bout à bout avec lui sans beaucoup de garantie d'étanchéité ni de bonne tenue mécanique à l'endroit de leur contact, sauf à procéder à une découpe particulière de l'entrevous sur chantier, un peu complexe, ce qui constitue une source d'erreur et une consommation de temps. En outre il existe une discontinuité d'isolation au niveau de la face inférieure des poutrelles proche des murs, qu'il convient de combler par des moyens d'isolation additionnels.In this document, the transverse breakers, when used with expanded polystyrene interjoists, have a horizontal tab facing the last full interjoists span which cooperates end to end with him without much guarantee of tightness or good mechanical strength at the point of their contact, except to proceed to a particular cut of the interjoists on site, a little complex, which constitutes a source of error and a consumption of time. In addition, there is an insulation discontinuity at the bottom face of the beams close to the walls, which should be filled by additional insulation means.

Dans un autre document, FR 2 829 780 , il est décrit des entrevous isolants à haute performance comportant parmi d'autres caractéristiques deux faces d'extrémité longitudinales dont l'une comprend une cavité, tandis que l'autre comprend un prolongement de forme complémentaire, pour former respectivement un emboîtement femelle et un emboîtement mâle. Cet emboîtement permet de réaliser une connexion efficace entre deux entrevous successifs et, pour ce qui concerne un entrevous en fin de travée, d'assurer un troisième appui sur l'entrevous adjacent en plus des appuis latéraux sur deux poutrelles voisines. Ceci permet d'améliorer notablement la capacité de résistance de l'entrevous vis-à-vis de la circulation des personnels de chantierIn another document, FR 2 829 780 high-performance insulating interjoists are described comprising, among other characteristics, two longitudinal end faces, one of which comprises a cavity, while the other comprises a complementary extension of shape, to respectively form a female interlock and a male interlocking. This interlocking makes it possible to make an effective connection between two successive interjoists and, as for a interjoists at the end of the span, to provide a third support on the adjacent interjoists in addition to the lateral supports on two adjacent beams. This considerably improves the resistance capacity of the interjoists vis-à-vis the movement of site personnel

Dans la cavité débouchent des alvéoles longitudinaux de forme choisie dont la fonction est, par une découpe appropriée de l'entrevous, de reconstituer d'autres feuillures d'appui lorsque l'entrevous doit être placé soit entre deux poutrelles à entraxe réduit, soit entre une poutrelle et un mur latéral. On sait que ces entrevous n'assurent pas de rupture de pont thermique entre la dalle de compression et le mur transversal qui supporte les poutrelles. Par ailleurs, il n'existe aucun appui du dernier entrevous d'une travée sur le mur qui soutient l'extrémité correspondante des poutres de la travée.In the cavity open longitudinal recesses of selected shape whose function is, by an appropriate cut of the interjoists, to reconstitute other rabbets when the interjoist is to be placed between two beams with reduced spacing, or between a joist and a side wall. We know that these interjoists do not provide thermal break between the compression slab and the transverse wall that supports the beams. In addition, there is no support of the last intervous of a span on the wall that supports the corresponding end of the beams of the span.

OBJET DE L'INVENTIONOBJECT OF THE INVENTION

La présente invention a pour objet un moyen destiné à réaliser un plancher pour à la fois fournir une isolation thermique par rupture de ponts thermiques entre un plancher et un mur de soutien latéral de ce plancher au niveau des extrémités de poutrelles, particulièrement adapté aux entrevous en polystyrène expansé tels que ceux décrits dans FR 2 829 780 et fournir un soutien assuré de ces entrevous à l'extrémité d'une travée.The present invention relates to a means for producing a floor for both providing thermal insulation by breaking thermal bridges between a floor and a lateral support wall of the floor at the ends of beams, particularly suitable for interjoists. expanded polystyrene such as those described in FR 2 829 780 and provide assured support for these interjoists at the end of a span.

Ainsi, plus précisément, l'objet de l'invention est un plancher comportant plusieurs travées chacune définie par deux poutrelles parallèles de support d'une part pour une pluralité d'entrevous dont chacun comporte deux faces d'extrémité longitudinales dont l'une comprend une cavité, tandis que l'autre comprend un prolongement de forme complémentaire, pour former respectivement un emboîtement femelle et un emboîtement mâle, des alvéoles longitudinaux de forme choisie débouchant dans ladite cavité et, d'autre part, pour un élément de rupture de pont thermique se présentant sous la forme d'un corps ayant deux faces sensiblement parallèles réunies par un chant perpendiculaire à ces faces, qui définit un profil semblable à celui de l'entrevous, et dont la largeur correspond à l'épaisseur sensiblement constante de ce corps, le profil susdit étant pour partie en forme de trapèze avec une petite base supérieure et une grande base prolongée vers le bas par un piètement rétréci, les extrémités de la grande base étant alors en encorbellement de part et d'autre du piètement, caractérisé en ce que la petite base du trapèze est surmontée d'un chapeau constituant le rupteur proprement dit, en ce qu'une face de l'élément est pourvue de corbeaux d'appui de l'une des extrémités creuse d'un entrevous et en ce que l'autre face de ce corps est en creux de manière à pouvoir recevoir, en emboîtement, le prolongement de forme complémentaire de l'autre extrémité de l'entrevous.Thus, more specifically, the object of the invention is a floor having several bays each defined by two parallel support beams on the one hand for a plurality of interjoists each having two longitudinal end faces, one of which comprises one cavity, while the other comprises a complementary extension of shape, to form respectively a female socket and a male socket, longitudinal cells of chosen shape opening into said cavity and, secondly, for a bridge breaking element thermal being in the form of a body having two substantially parallel faces joined by a song perpendicular to these faces, which defines a profile similar to that of the interjoists, and whose width corresponds to the substantially constant thickness of the body , the aforesaid profile being partially trapezoid-shaped with a small upper base and a large base extended downward by a foot narrowed, with the ends of the large base being then cantilevered on either side of the base, characterized in that the small base of the trapezium is surmounted by a cap constituting the breaker proper, in that one face of the element is provided with supporting crows one of the hollow ends of a interjoists and in that the other face of this body is recessed so as to receive, interlocking, the extension of complementary shape of the other end of the interjoists.

Dans ce plancher, cet élément isolant se met en place de la même manière qu'un entrevous en polystyrène c'est-à-dire que d'une part, les deux parties en encorbellement sur le piétement et les chants de ce piétement sont conformées pour venir en appui sur deux talons appartenant respectivement aux deux poutrelles définissant la travée et que, d'autre part, les corbeaux et le creux des faces d'about du rupteur thermique permettent l'emboîtement des extrémités de la file d'entrevous, emboîtement qui participe au soutien de ces extrémités. En d'autres termes, les éléments rupteurs mis en oeuvre dans le plancher selon l'invention ont une fonction de soutien des extrémités de travée d'entrevous, ce qui n'existe dans aucun rupteur connu.In this floor, this insulating element is set up in the same way that a polystyrene interjoists that is to say that on the one hand, the two corbelled parts on the base and the songs of this base are consistent to abut on two heels respectively belonging to the two beams defining the span and that, on the other hand, the crows and the trough of the end faces of the thermal breaker allow the interlocking of the ends of the interjoists line, interlocking who participates in supporting these ends. In other words, the breaker elements used in the floor according to the invention have a function of supporting inter-bay end, which does not exist in any known breaker.

Le plancher de l'invention comprend également des éléments isolants de l'état de la technique le long des murs parallèles aux poutrelles. Dans ce cas, le plancher est pratiquement dissocié thermiquement des murs porteurs qui le soutiennent et, en particulier, du chaînage qui est incorporé dans le mur, lors du coffrage de la dalle de compression.The floor of the invention also comprises insulating elements of the state of the art along the walls parallel to the beams. In this case, the floor is substantially thermally dissociated support walls that support it and, in particular, the chaining that is incorporated in the wall during the formwork of the compression slab.

La hauteur de chapeau de l'élément isolant est choisie en fonction de l'épaisseur du plancher à fabriquer.The cap height of the insulating element is chosen according to the thickness of the floor to be manufactured.

Dans un mode de réalisation de ce plancher, les entrevous et l'élément isolant ont un piètement solidaire d'une partie inférieure en forme de poutre faisant saillie au-delà de l'un desdits encorbellements et en ce que la dimension de la poutre, dans sa partie située sous l'encorbellement est de longueur sensiblement égale à la largeur d'une poutrelle de sorte que la face inférieure de cette poutrelle soit recouverte par cette poutre isolante.In one embodiment of this floor, the interjoists and the insulating element have a base secured to a lower beam-shaped portion protruding beyond one of said corbels and in that the dimension of the beam, in its part under the corbel is of length substantially equal to the width of a beam so that the lower face of this beam is covered by the insulating beam.

D'autres caractéristiques et avantages de l'invention ressortiront de la description donnée ci-après d'un exemple de réalisation de l'invention.Other features and advantages of the invention will emerge from the description given below of an exemplary embodiment of the invention.

BREVE DESCRIPTION DES DESSINSBRIEF DESCRIPTION OF THE DRAWINGS

Il sera fait référence aux dessins annexés parmi lesquels :

  • la figure 1 est une première vue extérieure d'un rupteur de pont thermique conforme à l'invention,
  • la figure 2 est une seconde vue de ce rupteur,
  • les figures 3 et 4 illustrent par deux vues extérieures, un entrevous connu auquel est destiné le rupteur de l'invention.
Reference will be made to the appended drawings among which:
  • the figure 1 is a first external view of a thermal bridge breaker according to the invention,
  • the figure 2 is a second view of this breaker,
  • the Figures 3 and 4 illustrate by two external views, a known interjoists which is intended the breaker of the invention.

Un plancher auquel s'applique l'invention est décrit dans le document EP 1 434 920 . Il comprend une structure formée par une série de poutrelles en béton armé ou précontraint qui sont disposées parallèlement entre elles et aux murs longitudinaux avec un entraxe défini. Ces poutrelles ont une longueur choisie adaptée à la distance comprise entre les deux murs transversaux et viennent reposer par leurs extrémités respectives sur ces murs transversaux. Entre les poutrelles, sont disposés des entrevous qui sont ceux représentés aux figures 3 et 4.A floor to which the invention applies is described in the document EP 1 434 920 . It comprises a structure formed by a series of reinforced or prestressed concrete beams which are arranged parallel to each other and to the longitudinal walls with a defined center distance. These beams have a chosen length adapted to the distance between the two transverse walls and come to rest by their respective ends on these transverse walls. Between the beams, are arranged interjoists which are those represented in Figures 3 and 4 .

Ces entrevous 1 sont en polystyrène expansé avec un corps principal 2 dont la section est en forme générale de trapèze reposant par un piètement rétréci 3, situé sous sa grande base, sur une plaque de base 4 dont une portion latérale 4a déborde de la grande base du corps en trapèze. Les extrémités latérales de la grande base du corps en trapèze forment des encorbellements latéraux grâce auxquels l'entrevous prend appui sur deux poutrelles parallèles qui définissent une travée à combler et plus exactement, sur le talon de chacune d'elles. La partie 4a de la plaque de base s'étend alors sous la face inférieure d'une des deux poutrelles de manière à la recouvrir totalement et à venir au contact par son bord latéral 4b avec le bord latéral 4c d'un entrevous posé sur la travée adjacente.These interjoists 1 are expanded polystyrene with a main body 2 whose section is generally trapezoid-shaped resting by a tapered base 3, located under its large base, on a base plate 4, a lateral portion 4a overflowing the large base trapezoidal body. The lateral ends of the large base of the trapezoidal body form lateral corbels through which the interjoists are supported on two parallel beams that define a span to fill and more precisely, on the heel of each of them. Part 4a of the base plate then extends under the lower face of one of the two beams so as to completely cover and come into contact with its side edge 4b with the side edge 4c of a interjoists placed on the adjacent span.

On remarquera enfin que chaque entrevous comporte deux faces 5 et 6 d'extrémité qui, de manière connue, sont l'une 5, pourvue d'une saillie 5a et l'autre 6 pourvue d'un creux 6a prévu pour accueillir la saillie 5a lorsque deux entrevous sont longitudinalement accolés dans une travée. A noter enfin que le corps trapézoïdal 2 et le piétement 3 sont évidés au moyen de logements borgnes longitudinaux et parallèles 7 débouchant dans le creux 6a.Finally, it will be noted that each interoffice comprises two end faces 5 and 6 which, in known manner, are one 5, provided with a projection 5a and the other 6 provided with a recess 6a designed to receive the projection 5a. when two interjoists are longitudinally contiguous in a span. Note finally that the trapezoidal body 2 and the base 3 are recessed by means of longitudinal and parallel blind housing 7 opening into the recess 6a.

L'élément isolant représenté aux figures 1 et 2, possède sensiblement le même profil que celui de l'entrevous, à savoir un corps 10 ayant deux faces 11 et 12 sensiblement parallèles réunies par un chant 13 perpendiculaire à ces faces 11, 12, qui en définit le profil et dont la largeur e correspond à l'épaisseur sensiblement constante de ce corps 10.The insulating element shown in Figures 1 and 2 , has substantially the same profile as that of interjoists, namely a body 10 having two substantially parallel faces 11 and 12 joined by a edge 13 perpendicular to these faces 11, 12, which defines the profile and whose width e corresponds at the substantially constant thickness of this body 10.

Le profil susdit est pour partie, en forme de trapèze avec une petite base 14 supérieure et une grande base 15 prolongée vers le bas par un piètement rétréci 16. Les extrémités 15a et 15b de la grande base 15 sont alors en encorbellement de part et d'autre du piètement 16. La petite base 14 est surmontée d'un chapeau 14a qui forme le rupteur proprement dit et dont la hauteur h sera fonction de l'épaisseur de la dalle de compression au-dessus des entrevous.The aforesaid profile is partly trapezoid-shaped with a small base 14 and a large base extended downwards by a narrowed base 16. The ends 15a and 15b of the large base 15 are then corbelled on both sides. Another of the base 16. The small base 14 is surmounted by a cap 14a which forms the actual breaker and whose height h will be a function of the thickness of the compression slab above interjoists.

Le piètement 16 est solidaire d'une partie inférieure en forme de poutre 17 faisant saillie au-delà de l'un 15a desdits encorbellements et dont les faces d'about telles que 17a sont disposées à l'aplomb des faces 11 et 12 du corps trapézoïdal et du piétement.The base 16 is integral with a lower portion in the form of a beam 17 protruding beyond one of said corbels 15a and whose abutting faces such as 17a are disposed in line with the faces 11 and 12 of the body trapezoidal and base.

La face 11 est pourvue de deux corbeaux 18a et 18b qui pourront, à l'assemblage, être logés dans le creux 6a, sous son bord supérieur ou dans les débouchés des logements borgnes 7 si l'entrevous est coupé transversalement. La face 12 est quant à elle pourvue d'un creux 12a identique à celui 6a de chaque entrevous de manière à pouvoir accueillir la partie en saillie 5a d'un entrevous.The face 11 is provided with two crows 18a and 18b which can, at the assembly, be housed in the hollow 6a, under its upper edge or in the outlets of blind housing 7 if the interjoists are cut transversely. The face 12 is provided with a hollow 12a identical to that 6a of each interjoists so as to accommodate the projecting portion 5a of interjoists.

Pour réaliser un plancher avec des entrevous en polystyrène et des rupteurs conformes à l'invention, on commence à placer au début d'une travée, un rupteur R de sorte que sa face 11 soit sensiblement à l'aplomb de la face intérieure du mur transversal qui soutient les poutrelles. Ceci est réalisé en plaquant la face 17a du rupteur contre cette face intérieure du mur, les encorbellements 15a et 15b reposant sur les talons des poutrelles. Le rupteur est stabilisé contre le renversement vers l'extérieur par la face 17c de la poutre qui est logée sous la poutrelle.To achieve a floor with polystyrene interjoists and breakers according to the invention, begins at the beginning of a span, a switch R so that its face 11 is substantially in line with the inner face of the wall transversal which supports the beams. This is achieved by plating the face 17a of the breaker against this inner face of the wall, the corbels 15a and 15b resting on the heels of the beams. The breaker is stabilized against overturning outwardly by the face 17c of the beam which is housed under the beam.

On continue à remplir le vide de la travée en juxtaposant des entrevous les uns derrière les autres, après à chaque fois, avoir emboîté la semelle de la poutrelle, et emboîté la saillie 5a dans le creux 6a. Pour le premier entrevous, la saillie 5a est reçue dans le creux 12a de la face 12 du rupteur.We continue to fill the gap of the bay by juxtaposing interlocks one behind the other, after each time, having nested the sole of the beam, and nested the projection 5a in the hollow 6a. For the first interjoists, the projection 5a is received in the recess 12a of the face 12 of the breaker.

Le dernier entrevous est éloigné d'une certaine distance du mur transversal opposé. Si cette distance est inférieure à l'épaisseur e du rupteur R, on procède à une découpe transversale du dernier entrevous pour ménager un vide résiduel dans la travée de cette largeur et on y loge le deuxième rupteur, en jouant notamment sur la capacité du polystyrène à se déformer légèrement pour faire pénétrer à force les corbeaux 18a, 18b dans les logements 6a ou 7 qui doivent les accueillir. Si la distance est supérieure à cette valeur d'épaisseur, on ajoute un dernier entrevous prédécoupé pour obtenir cette longueur de vide dans la travée.The last interjoists are some distance from the opposite transverse wall. If this distance is less than the thickness e of the breaker R, a transverse cutting of the last interjoists is carried out in order to create a residual vacuum in the span of this width and the second breaker is housed therein, in particular by acting on the capacity of the polystyrene. to deform slightly to force the crows 18a, 18b into the housing 6a or 7 which must accommodate them. If the distance is greater than this value of thickness, one adds a last intersected pre-cut to obtain this length of vacuum in the bay.

Le second rupteur R repose sur les talons des poutrelles. Sa face 12 est exactement située dans le plan de façade intérieure du mur porteur au contact de celui-ci et ce contact assurera l'étanchéité nécessaire à la retenue à ce niveau de la coulée du béton de la dalle de compression.The second switch R rests on the heels of the beams. Its face 12 is exactly located in the plane of inner face of the bearing wall in contact therewith and this contact will provide the seal required for the retention at this level of the concrete pouring of the compression slab.

A titre indicatif, on indiquera que l'épaisseur e du rupteur est de l'ordre de 100 millimètres.As an indication, it will be indicated that the thickness e of the breaker is of the order of 100 millimeters.

L'invention trouve une application particulière à la construction de planchers pour les maisons individuelles.The invention finds particular application to the construction of floors for individual houses.

Claims (2)

Plancher comportant plusieurs travées chacune définie par deux poutrelles parallèles de support d'une part pour une pluralité d'entrevous dont chacun comporte deux faces (5,6) d'extrémité longitudinales dont l'une comprend une cavité (6a) , tandis que l'autre comprend un prolongement (5a) de forme complémentaire, pour former respectivement un emboîtement femelle et un emboîtement mâle, des alvéoles longitudinaux (7) de forme choisie débouchant dans ladite cavité et, d'autre part, pour un élément de rupture de pont thermique se présentant sous la forme d'un corps (10) ayant deux faces (11, 12) sensiblement parallèles réunies par un chant (13) perpendiculaire à ces faces, qui définit un profil semblable à celui de l'entrevous, et dont la largeur (e) correspond à l'épaisseur sensiblement constante de ce corps, le profil susdit étant pour partie en forme de trapèze avec une petite base (14) supérieure et une grande base (15) prolongée vers le bas par un piètement (16) rétréci, les extrémités de la grande base (15) étant alors en encorbellement (15a,15b,) de part et d'autre du piètement (16), caractérisé en ce que la petite base du trapèze est surmontée d'un chapeau (14a) constituant le rupteur proprement dit, en ce qu'une face (11) de l'élément est pourvue de corbeaux (18a, 18b) d'appui de l'une des extrémités creuse d'un entrevous et en ce que l'autre face (12) de ce corps est en creux (12a) de manière à pouvoir recevoir, en emboîtement, le prolongement de forme complémentaire (5a) de l'autre extrémité de l'entrevous.Floor having several bays each defined by two parallel support beams on the one hand for a plurality of interjoists each having two longitudinal end faces (5, 6), one of which comprises a cavity (6a), while the other the other comprises an extension (5a) of complementary shape, to respectively form a female interlock and a male interlock, longitudinal cells (7) of chosen shape opening into said cavity and, on the other hand, for a bridge breaking element thermal device in the form of a body (10) having two substantially parallel faces (11, 12) joined by a edge (13) perpendicular to these faces, which defines a profile similar to that of the interjoists, and whose width (e) corresponds to the substantially constant thickness of this body, the aforesaid profile being partially trapezoid-shaped with a small base (14) and a larger base (15) extended downwards by a base nt (16) narrowed, the ends of the large base (15) then being corbelled (15a, 15b) on either side of the base (16), characterized in that the small base of the trapezium is surmounted by a cap (14a) constituting the breaker proper, in that a face (11) of the element is provided with crows (18a, 18b) for supporting one of the hollow ends of a interjoists and in that that the other face (12) of this body is recessed (12a) so as to receive, interlocking, the extension of complementary shape (5a) of the other end of the interjoists. Plancher selon la revendication 1, caractérisé en ce le piètement est solidaire d'une partie inférieure en forme de poutre (17) faisant saillie au-delà de l'un (15a) desdits encorbellements et en ce que la dimension de la poutre, (17) dans sa partie située sous l'encorbellement (15a) est de longueur sensiblement égale à la largeur d'une poutrelle de sorte que la face inférieure de cette poutrelle soit recouverte par cette poutre isolante.Floor according to claim 1, characterized in that the base is secured to a lower beam-shaped portion (17) protruding beyond one (15a) of said corbels and in that the dimension of the beam, ( 17) in its part under the cantilever (15a) is of length substantially equal to the width of a beam so that the lower face of this beam is covered by this insulating beam.
EP08291011A 2007-10-30 2008-10-28 Thermal-break device for concrete floor Withdrawn EP2055848A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0707622A FR2922912A1 (en) 2007-10-30 2007-10-30 THERMAL INTERRUPTION DEVICE FOR CONCRETE FLOORS

Publications (1)

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EP2055848A1 true EP2055848A1 (en) 2009-05-06

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EP (1) EP2055848A1 (en)
FR (2) FR2922912A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2948705A1 (en) * 2009-07-31 2011-02-04 Kp1 Insulated element for forming breaker strip of thermal bridge in e.g. building, has tab provided under level of support edges, where tab is perpendicular to interior and exterior faces and projected outside interior face
FR2956135A1 (en) * 2010-02-11 2011-08-12 Rector Lesage INSULATION DEVICE FOR FLOOR FLOORS

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
WO2003031742A1 (en) * 2001-10-09 2003-04-17 Kp1 Thermal-break device for concrete floor, and floor equipped therewith

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
WO2003031742A1 (en) * 2001-10-09 2003-04-17 Kp1 Thermal-break device for concrete floor, and floor equipped therewith
EP1434920A1 (en) 2001-10-09 2004-07-07 Kp1 Thermal-break device for concrete floor, and floor equipped therewith

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2948705A1 (en) * 2009-07-31 2011-02-04 Kp1 Insulated element for forming breaker strip of thermal bridge in e.g. building, has tab provided under level of support edges, where tab is perpendicular to interior and exterior faces and projected outside interior face
FR2956135A1 (en) * 2010-02-11 2011-08-12 Rector Lesage INSULATION DEVICE FOR FLOOR FLOORS
EP2360323A1 (en) 2010-02-11 2011-08-24 Rector Lesage S.A. Isolating device for floors with beams

Also Published As

Publication number Publication date
FR2922917B1 (en) 2017-01-27
FR2922917A1 (en) 2009-05-01
FR2922912A1 (en) 2009-05-01

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