EP1409813B1 - Connecting device for thermal insulating connection between at least two walls of a building, and method for making same - Google Patents

Abstract

The invention concerns a connecting device for thermal insulating connection between at least two walls of a concrete and/or masonry structure, one of the walls, called second wall, extending from the other wall, called first wall, and the two walls forming an angle between them. Said connecting device comprises an insulating element (30) made of insulating material: the insulating element (30) is arranged, abutting the second wall, inside the first wall, and includes a core (31) and at least a wing (32, 33) oriented along the connection between the two walls, said wing (32, 33) extending from the core (31) towards the second wall; the connecting element has a globally U-shaped cross-section the concave part of which faces the second wall (11); the ends of the wings (32, 33) of the insulation element (30) are at an external distance from each other not less than the thickness of said second wall. The invention also concerns a method for making such a device.

Description

The present invention relates to the treatment of the thermal bridges existing in the constructions, more particularly the insulated constructions from the inside, that their structures are in reinforced concrete or masonry (see DE-A-19711813 ).

A construction includes numerous thermal bridges to the right of the various connections or connections: floors and external walls, partitions and external walls, beams on or under floors, angles of sails, bays and external walls, balconies, loggias, brisis, ...

The treatment of these connections is necessary from the point of view of energy saving; Indeed, at the right of the connection of a wall and a floor, the thermal losses are of the order of magnitude of those of the current part of the insulated wall from the inside.

Moreover, the thermal non-homogeneity of a building increases the pathological risks by condensation of water vapor in the corners, by cracking of the external plaster, deterioration of the ceilings ....

The present invention relates to the treatment of thermal bridges of a construction to avoid the above disadvantages; it relates to a connecting device producing, in a thermally insulated manner, the connection between at least two walls of a concrete and / or masonry construction, one of the walls, called the second wall, extending from the other wall, said first wall, and the two walls at an angle between them, which connecting device comprises an insulating member of insulating material.

According to the invention, a connecting device providing, in a thermally insulated manner, the connection between at least two walls of a concrete and / or masonry construction, one of the walls, called the second wall, extending from the another wall, said first wall, and the two walls forming an angle therebetween, which connecting device comprises an insulation element made of insulating material, characterized in that the insulation element is disposed at the end of the second wall, inside the first wall, and comprises a core and at least one wing oriented along the connection between the two walls, said flange extending from the core to the second wall.

The insulation element has an opening.

The section of the insulation element may be L-shaped, Z-shaped, or other; it can have several wings.

Preferably, the connecting element is of generally U-shaped section whose concavity is turned towards the second wall. U can be straight, partially open or partially closed.

Advantageously, the ends of the wings of the insulation member are at an outer distance from each other at least equal to the thickness of said second wall.

Preferably, reinforcements ensure the transmission of mechanical stresses between the two walls.

Preferably, the opening is formed in the core of the insulation element.

Advantageously, one of the wings of the insulation element has at least one notch.

Preferably, each of the wings of the insulation element comprises a notch, the two notches being in line with each other.

Advantageously, the opening or the notch is traversed by an armature.

Preferably, the isolation element has a blind hole.

Advantageously, the blind hole is formed in the core of the insulation element.

Preferably, the wings of the insulation member internally have recesses whose shape corresponds to the outer one of fastening means such as magnets.

Advantageously, the insulation element consists of at least one of the group consisting of: expanded polystyrene, extruded polystyrene, polyurethane, polyisocyanurate, expanded perlite, cellular glass, phenolic foam, cork, polyvinyl chloride, fibragglo.

1. a-mise en place d'une première banche ;
2. b-dépose d'inserts éventuels ;
3. c-fixation de manière démontable sur la première banche d'un élément d'isolation comprenant une âme et au moins une aile s'étendant depuis l'âme vers la première banche ;
4. d-mise en place d'une seconde banche parallèle à la première, côté élément d'isolation, à une distance correspondant à l'épaisseur d'une première paroi à réaliser ;
5. e-remplissage de l'espace compris entre les deux banches à l'aide d'un matériau de construction tel que du béton ;
6. f-décoffrage de la première paroi ;
7. g-réalisation d'une seconde paroi à partir de la première, dont la tranche de raccordement s'étend au droit de et parallèlement à l'élément d'isolation (30).

The subject of the present invention is also a method for producing a connection device that provides, in a thermally insulated manner, the connection between at least two walls of a construction, characterized in that it comprises the following steps:

1. a-set up a first banche;
2. b-depositing any inserts;
3. c-removably fastening to the first banche of an insulating member comprising a core and at least one wing extending from the soul to the first banche;
4. d-establishment of a second wall parallel to the first side insulation element, at a distance corresponding to the thickness of a first wall to be made;
5. e-filling the space between the two panels with a building material such as concrete;
6. f-stripping of the first wall;
7. g-realization of a second wall from the first, the connecting wafer extends to the right of and parallel to the insulation member (30).

Preferably, in step c, the insulation element is of U-section, its concavity being turned towards the first banche, and, in step g, the thickness of said second wall does not exceed outer distance between the ends of the wings of the U.

Advantageously, the fixing on the first side of the insulating element is carried out so that said element at least partially covers metal irons waiting previously removably attached to the first form.

Preferably, the first form is metal and the fasteners removably are of the magnetic type.

To better understand the object of the invention will now be described, by way of example, purely illustrative and not restrictive, an embodiment shown in the accompanying drawings.

• la figure 1 est une vue partiellement en coupe illustrant la mise en oeuvre de l'élément d'isolation selon l'invention dans une liaison mur-plancher ;
• la figure 2 est une vue partielle en perspective montrant à plus grande échelle l'utilisation de fers 16 en U maintenus par des aimants 15 ;
• la figure 3 est un détail de la figure 1 à plus grande échelle ;
• la figure 4 est une vue en perspective de l'élément d'isolation des figures 1 et 3 ;
• les figures 5 à 12 montrent l'élément d'isolation différemment aménagé, les figures 6, 8, 10 et 12 étant des coupes selon VI-VI, VIII-VIII, X-X et XII-XII des figures 5, 7, 9 et 11, respectivement ;
• la figure 13 montre l'application de l'invention en présence d'un balcon ;
• la figure 14 est un schéma en perspective montrant partiellement le traitement selon l'invention d'une liaison entre un mur et un voile ;
• la figure 15 est une vue analogue à la figure 14, le mur étant en maçonnerie ;
• la figure 16 est une vue analogue à la figure 1, le mur étant en maçonnerie.

On these drawings:

• the figure 1 is a partially sectional view illustrating the implementation of the insulation element according to the invention in a wall-floor connection;
• the figure 2 is a partial perspective view showing on a larger scale the use of U-shaped irons 16 held by magnets 15;
• the figure 3 is a detail of the figure 1 on a larger scale ;
• the figure 4 is a perspective view of the insulation element of figures 1 and 3 ;
• the Figures 5 to 12 show the differently designed insulation element, the Figures 6, 8 , 10 and 12 being cuts according to VI-VI, VIII-VIII, XX and XII-XII of the Figures 5, 7 , 9 and 11 , respectively ;
• the figure 13 shows the application of the invention in the presence of a balcony;
• the figure 14 is a perspective diagram showing partially the treatment according to the invention of a connection between a wall and a veil;
• the figure 15 is a view similar to the figure 14 , the wall being in masonry;
• the figure 16 is a view similar to the figure 1 , the wall being in masonry.

The invention will be described in application to the treatment of the wall-floor connection, but of course it is applicable to any type of connection between two or more walls, at least one of which faces the outside, on an unheated room or on the floor. .

Referring to the figure 1 a wall 10 constituting the first wall and a floor 11 constituting the second wall are connected by a connecting device according to the invention. To better understand the constitution of said device, we will achieve the connection of the upper floor to the extension in height of the wall 10.

To do this, we do the following.

A so-called inner metal block 12 is placed vertically, that is to say on the inner side where the upper floor will be; the outer face 13 of the wall 12 is in the extension of the inner face 14 of the wall 10; on this outer face 13 of the panel 12, it is conventionally fixed by magnets 15, figure 2 waiting irons 16 connected together by longitudinal members 17, made of wood or plastic, which they pass through; here, the waiting irons 16 are U-shaped and two longitudinal members 17 are provided, arranged parallel to the floor 11, that is to say horizontally; one of the wings of U-shaped stand-by irons 16 passes through one of the longitudinal members 17, and the other wing of the U-shaped stand-by bars 16 crosses the other longitudinal member 17; these wings are bent at right angles so that the free ends can extend parallel to the wall 12; these free ends will be deployed after completion of the wall and opening of the formwork that constitutes the boards, the inner panel 12 and an outer panel 18; such a deployment is visible on the figure 3 .

These operations are classic; the positioning of the inner wall 12 is facilitated by the presence of a heel 19, constituted by the upper part of the wall 10 located above the upper level of the floor 11.

All operations are performed from a work platform 20 at the height of the floor 11, outside; a solid and heavy stud 21, as well as metal rods 22, allow the maintenance of the formwork 12.

Elements to be incorporated are placed, such as the manikin 23 of a window, electrical boxes, not shown, or other; other irons are also laid and held by magnets, such as magnets 15.

According to the invention, an insulating element 30 is pressed against the outer face 13 of the inner wall 12; its shape is such that it caps the magnets 15 and at least partially waiting irons 16; its section is in the general shape of U and its concavity is turned towards the inner wall 12.

The core 31 of the U carries wings 32 and 33 extending generally parallel to each other and perpendicular to the core 31; the wings 32 and 33 internally have recesses, respectively 34 and 35, longitudinal whose shape corresponds in part to the outer shape of the magnets 15 which fit together perfectly, so as to ensure the correct positioning of the element of insulation 30; the maintenance of the latter is provided by a wedging disposed between the core 31 and the block 18.

The insulation member 30 may be expanded polystyrene, extruded polystyrene, polyurethane, polyisocyanurate, expanded perlite, cellular glass, phenolic foam, cork, wood, polyvinyl chloride, fibragglo, or other insulating and / or fireproof material. It may, of course, consist of only one of these materials or of several of them: for example, the core 31 of the U may be expanded polystyrene and the wings 32 and 33 of wood, secured to the soul 31 in particular by gluing.

Here, the outer connection angle of the wings 32, 33 to the core 31 has been broken, as visible at 36.

The insulation element 30 Figures 3 and 4 has openings 37 formed in the core 31 allowing the passage of irons pending 16.

A first lattice 24 is then placed, as well as optionally additional vertical and / or horizontal reinforcing bars, electrical ducts or other incorporations, then a second lattice 25.

We then proceed to the establishment of threaded rods 26 and 27 frustoconical spacers, then to that of the second outer wall 18.

The wall is then sunk.

When the structures of the formwork are disassembled, in particular the inner wall 12 and the magnets 15, the ends of the waiting iron 16 are deployed to ensure the connection with the floor which is then conventionally cast after the side members 17 have been removed: the lines mixed 29 simulate the upper and lower faces of said floor; the connection slice of the floor to the wall therefore extends to the right of and parallel to the integrated insulation element in the wall; it will have been noted that the ends of the flanges 32, 33 of the insulation element 30 are at an external distance from each other at least equal to the thickness of the floor, which external distance being that which separates the outer faces of the wings 32, 33.

Thanks to the insulation element 30, for this example, the floor-wall thermal bridge is extremely reduced, up to 70% compared to a usual floor-wall connection, concrete, with interior insulation.

It goes without saying that, depending on the nature of the material or materials constituting the insulation element 30, fire performance, air permeability, watertightness, acoustics are at less conserved.

It will have been noted that the mechanical connection between the wall and the floor is not affected by the presence of the insulating element 30 so that it can be implemented whatever the stresses to the bracing, due for example to wind or earthquakes, through openings such as 37 or 39 that allow, during casting, the concrete to coat the irons pending 16 that pass through.

As already mentioned above, an insulation element according to the invention makes it possible to treat all the connections encountered in the construction whether it is new or that it consists of an extension of old construction, whether a house or a building, whatever its destination.

Of course, depending on the case, the section of the insulation element may be adapted and it may comprise several branches or wings oriented at any angle.

In the example described and shown, the two walls are a wall and a floor, and are therefore between them a right angle, one being vertical and the other horizontal; of course, this angle could be different, especially when the two walls are vertical; therefore, the U of the section of the insulation element may not be generally straight.

The Figures 5 to 12 show the insulation element 30 differently arranged.

The Figures 5 and 6 show the insulation element 30 without the openings 37.

According to Figures 7 and 8 , the core 31 of the insulation member 30 internally has blind holes 38 of rectangular shape intended to be arranged in line with the souls of the U-shaped stand-by irons 16 so that they are well coated during the pouring of the floor.

According to Figures 9 and 10 , indentations 39 are formed in one of the wings of the insulating member 30, here the wing 33, so that a vertical iron 28 may extend in part in the interior volume defined by the element insulation 30.

According to Figures 11 and 12 , notches 39 formed in the two wings 32, 33 of the insulation member 30, facing one another, allow the vertical armature 28 to pass through the interior defined by the element of insulation 30.

Of course, the different arrangements shown on the figures 4 , 7 , 9, 11 may be present on the same insulation element.

The figure 13 shows the application of the invention in the presence of a balcony 40 built from the wall 10 to the right of the floor 11; in this figure is schematized at 41 an insulating lining; here, the insulation member 30 has a simple u-shaped section.

The figure 14 shows the treatment of a connection in which the first wall 10 is a wall and the second wall 11 a vertical veil.

Inasmuch as the pressure of the cast concrete may deform, or even depress, the wings of the connecting element, it may be placed therebetween a core (s) acting as a spacer ( s).

The examples described above have shown the application of the invention to concrete constructions; alternatively, the construction may be masonry.

In the case of a first masonry wall, the implementation of the invention at the right of the second wall is similar to that described above for concrete walls.

The figure 15 is analogous to the figure 14 but here the first wall 10 is masonry, having concrete blocks or terracotta bricks 42 and the second wall 11, and the connection, are concrete.

The figure 16 is a view similar to the figure 1 but here, as in the figure 15 , the first partition 10 is masonry, comprising concrete blocks or terracotta bricks 42.

Claims (9)

1. A linking device forming, in thermally insulated manner, the link between at least two walls (10, 11) of a construction of concrete and/or masonry, one of the walls (11), referred to as second wall, extending from the other wall (10), referred to as first wall, and the two walls (10, 11) forming an angle between themselves, characterized in that it comprises:

   frame members (16, 28) providing the transmission of mechanical forces between the two walls (10, 11) by extending within the two walls (10, 11), and

   and further comprises an insulating member (30) disposed at the end of the second wall (11), inside the first wall (10) and comprising

   a mid-part (31), and

   two wings (32, 33) extending from the mid-part (31) towards the second wall (11),

   the ends of the wings (32, 33) being separated by a distance at least equal to the thickness of the second wall (11), and

   at least one opening (37) being provided in the insulating member (30) to enable the passage of the frame members (16, 28).
2. A linking device according to claim 1, characterized in that the opening (37) is provided in the mid-part (31).
3. A linking device according to one of claims 1 or 2, characterized in that a wing (32, 33) has at least one cut-out (39).
4. A linking device according to claim 3, characterized in that each of the wings (32, 33) has at least one cut-out (39).
5. A linking device according to one of claims 1 to 4, characterized in that the insulating member has a blind hole (38).
6. A linking device according to claim 5, characterized in that the blind hole (39) is made in the mid-part (31).
7. A linking device according to one of claims 1 to 6, characterized in that the wings (32, 33) have recesses (34, 35) internally the form of which corresponds to the external form of fastening means such as magnets (15).
8. A linking device according to one of claims 1 to 7, characterized in that it is constituted by at least one of the materials of the group constituted by: expanded polystyrene, extruded polystyrene, polyurethane, polyisocyanurate, expanded perlite, cellular glass, phenolic foam, cork, PVC, wood and wood-cement.
9. A linking device according to one of claims 1 to 8, characterized in that the first wall (10) is insulated by an insulating coating (41), and in that each wing (32, 33) comes into contact with the insulating coating (41).

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