EP2319998A1 - Anti-seismic profile member for thermal bridge breaker module and thermal bridge breaker module provided with at least one such profile member - Google Patents

Abstract

The module (1) has a tube forming unit provided with a square or rectangular cross-section. The tube forming unit comprises a front wall (111), a rear wall (112), an upper wall (113) and a lower wall (114). An insulating material is placed in an inner side of the tube forming unit. Metal reinforcements (13) pass through the tube forming unit. The front wall of the tube forming unit is extended by an upper longitudinal edge and a lower longitudinal stop that are provided in a plane of the front wall. The front wall is carried out in a plastic material and made of alveolar polypropylene. The rear wall, the upper wall and the lower wall are made of metallic material.

Description

1. Field of the invention

The field of the invention is that of the construction of reinforced concrete buildings, cast in situ or prefabricated, and in particular that of the insulation of the interior of such buildings.

The invention more specifically relates to an elementary module for the construction of thermal bridge breakers.

The invention applies in particular, but not exclusively, to the construction of administrative, commercial, school, hospital, residential and office buildings.

2. State of the prior art and disadvantages

In the face of the major challenge of climate change, France has made ambitious commitments by signing the Kyoto Protocol that came into effect in February 2005: the government has committed to reducing the average greenhouse gas emissions from 2008 to 2012, at the level of those of 1990.

In France, the building sector is the largest consumer of energy with 70 million tonnes of oil equivalent, or more than 40% of national energy consumption. This consumption results in the emission of 120 million tons of CO ₂ , or nearly 25% of national CO ₂ emissions.

In order to preserve the environment and reduce greenhouse gas emissions, it has become essential to reduce energy consumption in the building sector. This is the objective of the Energy Orientation Law, passed in 2005, and integrating the 2005 Thermal Regulation (RT 2005). The RT 2005 is a continuation of the Thermal Regulation of 2000. It applies to new buildings in the residential and non-residential sectors in which the building permit was filed since ¹ July 2006. The RT 2005 aims to reduce the energy consumption of new buildings by 15% compared to RT 2000, with constraints and thermal performance requirements strengthened. It is now up to the professionals to propose solutions to improve the energy performance of buildings in order to meet these new thermal requirements but also to propose solutions to anticipate the requirements of the new regulations, in particular of the Thermal Regulation of 2010, which will be moreover in addition reinforced.

Improving the thermal performance of a building includes improving its thermal insulation. Although the insulation of walls and glass walls is now very efficient, there are still areas of heat loss untreated, which are the cause of overconsumption of energy.

In France, construction professionals, whether residential or tertiary, favor the insulation of buildings from the inside. This technique, more widely used in France than the external insulation has the disadvantage of leaving many areas of weak point called thermal bridges.

Thermal bridges are physical phenomena that mean that, in a part of the building, for reasons related to the material or the method of construction, thermal flows greater than those in adjacent areas exist. Such thermal bridges are formed in particular at the junction slab / facade, slit / facade and slab / balcony.

These thermal bridges are at the origin of a strong energetic loss. In general, the losses related to thermal bridges represent 30 to 40% of the losses by the walls in a collective building. Thus, one meter of thermal bridge untreated in France is responsible for an overconsumption per year of 77 kWh; 10 liters of fuel; that is 5 Kg of CO ₂ rejected each year.

Moreover, the surface temperature inside a room of a building is greatly reduced, condensation or even mold can form at the thermal bridges, generating substantial costs of maintenance and renovation.

The treatment of thermal bridges is therefore a major challenge in improving the energy performance of new buildings.

The professionals have therefore developed horizontal (slab / façade) and vertical thermal breaker (slit / façade) systems.

Horizontal thermal bridge breakers composed of a rock wool insulation 40 or 60 mm thick (according to the thermal requirements), crossed by a network of corrosion resistant reinforcement, distributed and arranged in lattice, are known in particular. to take all the solicitations applied. The insulation on one of these faces is provided with a PVC profile.

Horizontal thermal bridge breakers are also known, composed of a rock wool insulation combined with a polyurethane hard foam of variable thickness depending on the thermal requirements, traversed by a network of corrosion-resistant reinforcements, distributed and arranged in accordance with the invention. lattice to take all the applied solicitations.

Other horizontal thermal breakers are composed of a polystyrene hard foam insulation of variable thickness depending on the thermal requirements, crossed by a network of corrosion resistant reinforcement, distributed and arranged in lattice to take the whole. applied solicitations. Such thermal bridge breakers may be provided on at least one of their faces with a fire protection profile or a fireproof plate.

Other horizontal thermal breakers are provided with rigid plates passing through the insulating material, such plates are intended to improve the resistance to shear.

The thermal break switches described above can not be installed on an existing rack. These products are integrated well upstream by the architects and building designers at the time of the project.

• le coulage d'un voile de façade, le niveau haut du voile correspondant au niveau bas du plancher ;
• la préparation du coffrage de la dalle ;
• la pose des rupteurs de pont thermique en fond du coffrage, les armatures du rupteur s'insérant dans les cadres du chaînage vertical du voile de façade ;
• la pose du chaînage horizontal du voile de façade ;
• le coulage de la dalle ;
• la reprise du coulage du voile de façade.

The implementation of the breakers of the prior art comprises:

• the pouring of a façade veil, the high level of the veil corresponding to the low level of the floor;
• the preparation of the formwork of the slab;
• the installation of the thermal bridge breakers at the bottom of the formwork, the armatures of the breaker fitting into the frames of the vertical chaining of the facade veil;
• the laying of the horizontal chaining of the facade veil;
• the pouring of the slab;
• the resumption of the pouring of the veil of facade.

The first step of casting the facade can be carried out by implementing a box so that the hardened web defined a location to allow the introduction of the breakers. In this case, the resumption of the pouring of the veil is carried out under the face of the floor.

However, construction professionals note on a daily basis that the implementation of these thermal breakers is an important source of loss. Indeed, the stop and the resumption of the pouring of the veil generates at the level of the sails of facade, in particular at the level of the chaining of the floor, a lack of homogeneity at the origin of fissures even a defect in the behavior of the supported elements and / or contiguous.

In order to overcome this major drawback, it is known to cast thicker wall sails. This solution implies on the one hand an increase in construction time and on the other hand an increase in the consumption of raw materials and energy. Such a solution is therefore not in accordance with the constraints and requirements defined in the RT 2005.

It was then proposed to implement a new type of thermal bridge breaker. These new breakers consist of a profile of insulating material, especially expanded polystyrene, capable of accommodating a waiting box containing reinforcements intended to take all the applied stresses. The profile / waiting box assembly is incorporated in the formwork of the facade walls against a banche, so that the breaker is integrated into the sail during casting.

Such breakers are compatible with the construction techniques of the structural work used in France, especially with poured concrete pouring techniques and floor poured on site or with pre-slab. Furthermore, the implementation of such breakers does not involve stopping and then resumption of casting sails.

However, the implementation of such switches leads to a thinning of the web at the thermal breaker. Such thinning is likely to weaken the structure and weaken the resistance of the elements supported and / or contiguous.

To overcome this disadvantage, the sails facade must be cast thicker. However, as previously explained, such a solution does not comply with the constraints and requirements defined in the RT 2005.

3. Objectives of the invention

The invention aims to overcome the disadvantages of the prior art.

More specifically, an objective of the invention, in at least one of its embodiments, is to provide a thermal bridge breaker whose implementation compared to the device of the prior art is more suited to structural techniques used in France.

Another object of the invention, in at least one of its embodiments, is in particular to provide such a breaker that allows to improve the thermal performance of new constructions.

Another objective of the invention, in at least one of its embodiments, is to provide such a breaker which makes it possible to reduce the loss of property of the new constructions, without calling into question the usual thicknesses of the facade walls.

4. Presentation of the invention

These objectives, as well as others which will appear later, are achieved by means of a module forming a thermal bridge breaker for flooring intended to be implemented in a reinforced concrete construction, said module comprising an insulating material. and metal reinforcements able to take over the structural stresses.

The module according to the invention comprises a tube assembly of substantially square or rectangular cross section, said tube assembly having a front wall, a back wall, a top wall and a bottom wall, said insulating material being disposed within said tube assembly and said metal frames passing right through said tube assembly. According to the invention, the front wall of said tube member of a module according to the invention is extended by an upper longitudinal edge provided in the plane of said front wall and said front wall of said tube member is extended by a lower longitudinal stop. provided in the plane of said front wall.

The term "thermal bridge breaker for floor" means a thermal bridge breaker likely to form at the junction between a substantially horizontal slab and a substantially vertical façade veil, in particular between a floor slab or balcony and a facade veil or between two essentially horizontal slabs, in particular between a balcony slab and a floor slab.

Such a thermal breaker comprises an insulating material.

Examples of insulating material include rock wool, polystyrene or hard polyurethane foams.

The term "metal reinforcements capable of taking up structural stress", reinforcements such as tensile or compressive steels and sharpness profiles. These reinforcements are secured to the chaining of the web and the chaining of the slab to respectively transmit the tensile forces, the shear forces and the compressive forces.

Examples of metallic material constituting these metal reinforcements include stainless steel or ribbed duplex stainless steel. It may be envisaged to improve the corrosion resistance of metal reinforcements with a protective sheath of elastomer or composite material of low thermal conductivity.

The module according to the present invention comprises a tube assembly, the front wall being facade side side or balcony slab side and the rear wall being slab side floor.

The tube assembly constitutes a kind of protective housing, inside which the insulating material is protected during the laying of sail and slab courses and during the casting of the sail and the slab. Such a protective housing makes it possible to improve the service life and the maintenance of the insulating material in the construction. It allows in particular to keep in time the intrinsic characteristics of the insulation (dimension, humidity, ...).

By "passing right through said tube assembly" it is meant that the reinforcements such as tensile or compressive steels and shear profiled sections pass through the protective casing so that their projecting end can cooperate with the chaining of the web and that their end projecting slab side can cooperate with the chaining of the slab.

The fact that the metal frames pass right through the tube assembly helps maintain the rigidity of the slab / sail joint.

According to the invention, the front wall of said tube element of a module according to the invention is extended by an upper longitudinal edge provided in the plane of said front wall.

The longitudinal edge thus extends the front wall upwards. The longitudinal bank is thus a part of banche, which during the pouring of the veil is going to be taken in the concrete and integrated into the veil. The integration of the longitudinal edge of the module into the web makes it possible to reduce the risk of cracks and to reinforce the resistance of the supported and / or contiguous elements.

The longitudinal edge also makes it possible to define and ensure a continuous vertical alignment for the lifting of the upper panel. Thus the establishment of a superior formwork no longer requires to control the plumb and the continuity of the assembly.

Still according to the invention, said front wall of said tube member is extended by a lower longitudinal stop provided in the plane of said front wall.

The longitudinal stop therefore extends the front wall downwards and thus constitutes a part of banche, which during the casting of the veil will be taken in the concrete and integrated into the veil. The integration of the longitudinal stop of the module in the veil makes it possible to reduce the risk of cracks and to reinforce the resistance of the supported and / or contiguous elements.

The longitudinal edge and / or the longitudinal stop may be brought and secured to the front wall during installation of the module. Thus, during transport of the module, the bank and / or the stop will not be damaged.

The bank and / or the abutment may be secured to the front wall by any technique known to those skilled in the art, particularly by welding.

According to a variant, said front wall and said longitudinal bank and / or said bottom longitudinal stop form a single front plate.

The specific profile of the housing thus allows its incorporation into a façade wall only by its front wall and its upper longitudinal edge and / or its lower longitudinal stop.

The incorporation of the module is done directly during the casting of the sails of facade, without resumption of casting in under face of the floor. The junction between the floor slab and the facade wall is made without homogeneity defects, the risk of cracking and defect in the holding of supported and / or contiguous elements are reduced.

On the other hand, the fact that the module is incorporated in the sail only by its front wall and its upper longitudinal edge and / or its lower longitudinal stop does not lead to a thinning of the web at the thermal bridge breaker. The implementation of a module according to the invention, unlike the breakers of the prior art, does not require the thickening of the sails to ensure the holding of supported and / or contiguous elements, nor the implementation of steels additional chaining.

According to a variant, said front wall or said front plate, said rear wall, said upper wall and said bottom wall are made in one piece. "Monobloc" means the characteristic according to which the front wall or the front plate, the rear wall, the top wall and the bottom wall are formed in one piece, without the use of joining elements.

According to a variant, the front wall or said front plate of the tube element of the module may be made of a plastic material having a low coefficient of thermal conductivity, such as for example polypropylene or PVC and the rest of the element forming tube can be made of metal and facilitates its manufacture.

However, according to another variant, said front wall or said front plate, said rear wall, said upper wall and said bottom wall are all made of such a plastic material having a low coefficient of thermal conductivity. This variant is more interesting because it gives lightness to the module.

According to this variant, the thermal bridges capable of forming at the level of the upper and lower walls of the module are limited. The tube element then constitutes a complementary thermal barrier of the insulating material. The thermal performance of the frame is further improved.

Still according to this variant, the module according to the invention preferably then comprises first irreversible fastening elements of the metal reinforcements to said tube element.

Such fasteners are necessary in that the tube member is of plastic material while the reinforcements are metal. The irreversible nature of the fastening of the reinforcements to the tube element makes it possible to avoid the separation of metal reinforcements from the tube element and thus to ensure that the module is put into operation with all its metal reinforcements.

Preferably, said first irreversible fastening elements are hollow inserts which pass right through said tube assembly and receive said metal reinforcements, the latter being provided with welded flanges irreversibly clipping in an upper part of said inserts.

In addition, it may be envisaged, to further limit the heat flow through the module, that the upper wall has longitudinal slots and / or that the rear wall has circular orifices. The presence of such slots and / or orifices "complicates" the path of the thermal flow through the module and thus makes it possible to further improve the thermal performance of the constructions using such modules.

Advantageously, said front wall or said front plate and / or said rear plate is / are equipped with a plurality of profiles projecting from the facade or balcony slab side and / or the floor slab side.

Each profile has at least one horizontal flat part and at least one vertical or oblique flat part, the horizontal flat part (s) being intended to transmit the stresses having a vertical component undergone by the module and the or the vertical plane or oblique portion (s) being intended to transmit the stresses having a horizontal component undergone by the module.

The profile according to the invention is thus able to transmit and dissipate the stresses of a physical phenomenon having multidirectional components, horizontal and / or vertical, as is the case in particular of the solicitations generated at the building level by a jerk. seismic.

According to an advantageous embodiment, the vertical plane or oblique part (s) have at least one orifice intended to accommodate the connections of a web or slab or an armature intended to cooperate with the chaining of a veil or a slab

The profile is therefore likely to cooperate directly or indirectly with the chaining of a web and / or a slab. The chaining of the sail and / or slab may in particular be secured to the profile by any technique known to those skilled in the art, in particular by covering reinforcements.

Such cooperation between the profile and the chaining of a web and / or a slab makes it extremely easy and inexpensive to increase the mechanical resistance of the building and further improve the transmission and dissipation of vertical and horizontal tensions felt by the building during an earthquake.

Preferably, the profile has a Z shape.

Advantageously, said profiles pass through said tube member from one side to the other.

This particular configuration makes it possible to reinforce the rigidity of the slab / sail joint, to reduce the risk of cracks and to reinforce the resistance of the elements supported and / or contiguous, especially during seismic jolts.

According to an advantageous variant of the invention, the profiles are brought and secured to the front wall and the rear wall during installation of the module. Thus, during transport of the module, the profiles will not be damaged.

When the front, rear, upper and lower walls of the tube member are made of plastic material, the profile preferably comprises second irreversible fastening elements of said profiles to said tube member.

The irreversible nature of the attachment of the profiles to the tube element permitted by these second fastening elements makes it possible to ensure that the module is put into operation with its sections.

Preferably, said second fastening elements pass through said front wall.

Advantageously, said longitudinal bank and / or said lower longitudinal stop is provided with longitudinal ribs. Such ribs have the advantages of improving the adhesion of concrete to these elements when poured.

5. List of figures

• les figures 1 et 2 représentent un premier mode de réalisation d'un module formant rupteur de pont thermique selon la présente invention, respectivement en perspective et en coupe transversale selon l'axe AA';
• la figure 3 représente une vue en coupe d'une construction intégrant un module selon les figures 1 et 2 ;
• la figure 4 représente un deuxième mode de réalisation d'un module formant rupteur de pont thermique selon la présente invention, selon une vue en perspective ;
• les figures 5 et 6 représente un troisième mode de réalisation d'un module formant rupteur de pont thermique selon la présente invention, respectivement en perspective et en coupe transversale selon l'axe BB';
• la figure 7 représente en vue des cotés un premier moyen de fixation d'une armature métallique à l'élément formant tube ;
• la figure 8 représente en vue des cotés un second moyen de fixation d'un profilé à l'élément formant tube.

Other characteristics and advantages of the invention will emerge more clearly on reading the following description of two preferred embodiments of the invention, given as simple illustrative and non-limiting examples, and the appended drawings, among which:

• the figures 1 and 2 represent a first embodiment of a thermal bridge breaker module according to the present invention, respectively in perspective and in cross section along the axis AA ';
• the figure 3 represents a sectional view of a construction incorporating a module according to the figures 1 and 2 ;
• the figure 4 represents a second embodiment of a thermal bridge breaker module according to the present invention, in a perspective view;
• the figures 5 and 6 represents a third embodiment of a thermal bridge breaker module according to the present invention, respectively in perspective and in cross section along the axis BB ';
• the figure 7 represents in view of the sides a first means of fixing a metal frame to the tube member;
• the figure 8 is a side view of a second means for attaching a profile to the tube member.

6. Detailed description of a first embodiment

• un matériau isolant ;
• des armatures métalliques aptes à reprendre les sollicitations de structure ;
• un ensemble formant tube de section transversale essentiellement carrée ou rectangulaire, ledit ensemble formant tube présentant une paroi avant, une paroi arrière, une paroi supérieure et une paroi inférieure, ledit matériau isolant étant disposé à l'intérieur dudit ensemble formant tube et lesdites armatures métalliques traversant de part en part ledit ensemble formant tube.

The general principle of the invention is based on the implementation of a thermal bridge breaker for flooring intended to be implemented in a reinforced concrete construction, comprising:

• an insulating material;
• metal reinforcements capable of taking up structural stress;
• a tube assembly of substantially square or rectangular cross-section, said tube assembly having a front wall, a back wall, an upper wall and a bottom wall, said insulating material being disposed within said tube assembly and said metal frames passing right through said tube assembly.

Such a breaker has the advantage of being much more suitable for applied in structural techniques used in France, compared to the breakers of the prior art.

In addition, such a breaker makes it extremely easy and inexpensive to improve the thermal performance of new constructions and to reduce the loss experience of new constructions.

As shown, a module (1) according to the invention comprises a tube assembly (11) of rectangular cross-section. The assembly (11) has a front plate (111), a rear wall (112), an upper wall (113) and a bottom wall (114).

In the embodiment shown Figures 1 to 3 , the plate (111) is a polypropylene honeycomb plate 3.5 mm thick. It is formed by the front wall (115) of the assembly (11), an upper longitudinal edge (116) and a lower longitudinal stop (117). The honeycomb plate (111) is intended to be integrated into the facade web (2).

The rear wall (112), the upper wall (113) and the bottom wall (114) are made of one-piece galvanized sheet 1 mm thick. As shown, the rear wall (112) is intended to be in contact with the floor slab (3). The upper wall (113) and the lower wall are intended to be in contact with an insulating material (21) placed on the facade web (2), on the inner side.

The protective housing defined by the front plate (111), the rear wall (112), the top wall (113) and the bottom wall (114) accommodate an insulating material (12), rockwool, in the form of a rectangular parallelepiped of 60 mm thickness.

As represented in figures 2 and 3 , the tube assembly (11) and the insulating material (12) are traversed right through by an armature (13). This armature (13) allows the transmission of forces and tensions that are exerted on the construction module (1). The frame (13) is made of stainless steel. As shown, the armature (13) is U-shaped. The arms (131,132) of the armature (13) pass through the honeycomb plate (111) and the rear wall (112). perpendicularly, so that the free ends of the legs (131,132) are on the side of the floor slab (3) while the bent portion (133) of the frame (13) is on the side of the facade web (2 ). The armature (13) is secured to the rear wall (112) at crossing points (134, 135, 136, 137) by welding. It passes through the alveolar plate (111) without being secured to it. The honeycomb plate (111) is secured to the rear wall (112), the upper wall (113) and the bottom wall (114) by punching.
The reinforcements (13) cooperate with the chaining (22) of the facade web (2) by their bent portion (133) and cooperate with the chaining (31) of the floor slab by their branches (131, 132). The armatures (13) are secured to the chaining (22, 31) by overlap.

7. Implementation of a module forming a thermal bridge breaker according to the present invention

• la mise en place de banches dissymétriques pour le coulage du voile de façade, la banche côté extérieur est arasée au dessus de l'arase supérieure du plancher à couler, au niveau de la rive longitudinale supérieure (116), la banche côté intérieur est arasée en sous face du plancher à couler;
• la pose des armatures en élévation de banches ;
• la pose des modules (1) selon l'invention en tête de banche côté intérieur, la paroi inférieure (114) de chaque module (1) est positionnée et calée sur l'épaisseur de la banche grâce à un système de cale en bois.La plaque alvéolaire (111) de chaque module (1) vient en butée contre la banche côté intérieur et la cale en bois par sa butée longitudinale inférieure (117). Les armatures (13) de chaque module (1) s'insèrent dans les cadres du chaînage vertical du voile de façade (2) et de la dalle (3). Les modules sont disposés le long du voile de façade de manière à obtenir une isolation ininterrompue ;
• la pose des chaînages horizontaux du voile de façade ;
• le coulage du voile de façade;
• le décoffrage des banches. Les modules (1) sont fixés dans le voile de façade, la paroi supérieure, la paroi inférieure et la paroi arrière du module formant une talonnette faisant saillie du côté plancher ;
• la pose du coffrage de plancher ;
• le ferraillage du plancher ;
• le coulage du plancher ;
• la mise en place des banches pour le coulage du voile supérieur à partir de la talonnette.

The implementation of these breakers comprises:

• the establishment of dissymmetrical soffits for the pouring of the facade veil, the external side trim is leveled above the upper level of the floor to be cast, at the level of the upper longitudinal edge (116), the inner side edge is leveled underfloor of the floor to be poured;
• the laying of frames in elevation of banches;
• the installation of the modules (1) according to the invention at the headboard side inside, the bottom wall (114) of each module (1) is positioned and wedged to the thickness of the form thanks to a wooden wedge system. The honeycomb plate (111) of each module (1) abuts against the inner side and the wooden block by its lower longitudinal stop (117). The frames (13) of each module (1) fit into the frames of the vertical chaining of the facade web (2) and the slab (3). The modules are arranged along the facade wall so as to obtain uninterrupted insulation;
• the laying of horizontal chaining of the facade veil;
• the pouring of the facade veil;
• the stripping of the banches. The modules (1) are fixed in the facade web, the top wall, the bottom wall and the rear wall of the module forming a heel protruding from the floor side;
• the laying of the floor formwork;
• reinforcement of the floor;
• the pouring of the floor;
• the establishment of the panels for pouring the upper veil from the heel.

Thus, according to the implementation of modules according to the invention does not involve resumption of the casting of the web in the underside of the floor and in fact reinforces the rigidity of the junction slab / sail, reduces the risk of cracks and strengthens the holding supported and / or contiguous elements.

Moreover, the implementation of modules according to the invention does not involve any modification or reduction or discontinuity of the rebar reinforcement at the edge of the floor.

It will be noted that a lower flexible plastic gasket may advantageously be provided between the module and the concrete web to prevent the milt of concrete from intruding into the module.

8. Detailed description of a second embodiment

As represented in figure 4 a module (1) such as that previously described in Figures 1 to 3 , may further present on the honeycomb plate (111) and on its rear wall (112) a plurality of Z-shaped profiles (14).

In the embodiment shown figure 4 , the profiles (14) are made of stainless steel and project from the front wall side and the floor slab side. In the embodiment shown, the portions of the profiles (14) protruding are secured by welding to the rear wall (112).

As represented in figure 4 , the portions of the profiles (14) have on the vertical or oblique planar portion (142) two orifices (143) capable of accommodating an additional reinforcement intended to cooperate with the chaining of a slab or a veil. The implementation of such a reinforcement in the orifices (143) makes it possible to reinforce the anchoring in the concrete mass of the profile (14) and to oppose the phenomenon of loosening of the profile (14).

In addition the armature-profiled assembly is a ductile assembly, that is to say that has a slow response to deformation, reducing the risk of frank and rapid rupture of the profile and the module according to the invention.

Comparative studies on the mechanical and parasitic performances of the modules according to the invention and modules of the prior art have been carried out.

The results obtained show that the modules according to the invention make it possible to reduce by a factor of three the displacements at the module-floor connection, with respect to modules of the prior art, for identical demands.

The results obtained also show that the value of the force to be applied to obtain a rupture of the module according to the invention is 30 to 50% greater than the value of the force leading to the rupture of the modules of the prior art.

Seismic performance tests show that the modules of the prior art do not exhibit mechanical resistance to forces having a horizontal component. Such modules are therefore not adapted to withstand earthquakes. On the other hand, the results obtained for the modules according to the invention highlight their mechanical resistance against forces with vertical and horizontal multidirectional components. This rigidity is obtained on the one hand by the vertical part of the profile and on the other hand by the combination of the profile with the reinforcements.

9. Detailed description of a third embodiment

A third embodiment of the invention is described with reference to figures 5 , 6 , 7 and 8 .

In this embodiment, the armatures (13) are made of stainless steel but the front (111), rear (112), upper (113) and lower (114) walls of the tube element (11) as well as the longitudinal bank (116) and the lower longitudinal stop (117) are made in one piece of PVC.A reference to the figure 5 the reinforcements (13) are irreversibly fixed to the tube element (11) by means of first fastening elements (40) and the profiles (14) are also irreversibly fixed to the tube element (11). ) by means of second fixing means.

The bank (116) and the abutment (117) are provided with longitudinal ribs which extend over their entire length and which improves the adhesion of these elements to the concrete when poured.

With reference to the figure 7 the first fixing means (40) are in the form of a hollow plastic insert. Such a hollow insert has a circular upper portion (41) showing latching windows (42) and a longitudinal portion (43) terminating in two arcuate portions (44) that can move elastically away from each other. one of the other and each terminated by a detent pin (45) delimiting a gutter (46).

With reference to the figure 6 the hollow inserts pass right through the tube element (11). Each arm (131.132) of the armatures (13) is provided with a circular collar (138) to which it is welded.

During assembly of the module the inserts are arranged on the module, then the branches (131,132) of the reinforcements are inserted into them.

When positioning the branches (131, 132) in the hollow inserts, each collar (138) is designed to cooperate with the circular upper part (41) of a hollow insert such that the periphery of this collar irreversibly locks in the latching windows (42) thereof. Concurrently, the branches (131, 132) separate the arcuate portions (44) of the insert and the latching lugs (45) and the gutters (46) provided in the end thereof cooperates with the rear wall (112) of the tube member (11) so that the armatures (13) are irreversibly locked in the tube member (11) making it impossible or at least very difficult the subsequent separation of the reinforcements (13) from the rest of the module and thus ensuring the use of the module with all its metal frames.

With reference to the figure 8 the second fastening means (50) for irreversibly fastening the profiles (14) to the tube member (11) is in the form of a plastic nail having a circular flat upper portion (51) and an umbrella-shaped end (53) whose limbs (54) are elastic and delimit a locking space (55).

These second fastening means (50 are mounted through the front wall (111) so that it irreversibly locks in the locking space (55).

Claims (10)

Earthquake-resistant section (14) intended to be implemented in a module (1) forming a thermal bridge breaker for a floor of a reinforced concrete construction comprising an insulating material (12) and metal reinforcements (13) able to take up the stresses of structure,
said profile (14) having at least one horizontal plane portion (141) and at least one vertical or oblique planar portion (142), the horizontal plane portion (s) (141) being for transmitting the stresses having a vertical component undergone by the module (1) and the vertical or oblique (s) plane portion (s) (142) being intended to transmit the stresses having a horizontal component undergone by the module (1). Seismic section according to claim 1 characterized in that each vertical or oblique planar portion (142) has at least one orifice (143) intended to accommodate the chaining of a web or a slab or an armature intended to cooperate with the chaining a sail or slab. A seismic section according to claim 1 or 2, characterized in that it has a shape of Z. Module (1) forming a thermal bridge breaker for a floor intended to be used in a reinforced concrete construction, said module comprising an insulating material (12) and metal reinforcements (13) able to take up the structural stresses, characterized in that it has at least one seismic profile (14) according to any one of claims 1 to 3. Module (1) according to claim 4 characterized in that it comprises at least one front wall (111), an insulating material (12) and metal reinforcements (13) adapted to take up structural stresses, said at least one profile earthquake protruding from said front wall (111). Module according to claim 5, characterized in that it comprises a rear wall (112), an upper wall (113) and a lower wall (114) forming with the front wall (111) a section tube assembly (11) transversely square or rectangular. Module according to claim 5 or 6, characterized in that said front wall (111) of said tube member is extended by an upper longitudinal edge (116) provided in the plane of said front wall. Module according to any one of claims 5 to 7 characterized in that said front wall (111) of said tube member is extended by a lower longitudinal stop (117) provided in the plane of said front wall (111). Module according to any one of claims 5 to 8, characterized in that said front wall (111) and said longitudinal edge (116) and / or said lower longitudinal stop (111) form a single front plate. Module according to any one of claims 4 to 9 characterized in that said at least one profile (14) passes right through said module.

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