FR2865227A1 - Heat bridges limiting method for use during erection of construction walls, involves placing insulating units using abutments before casting of concrete such that insulating units are positioned between located zones of concreting - Google Patents

Abstract

The method involves defining located zones of concreting of connecting rods, and providing abutments (12) for positioning insulating units (13) on both sides of each located zone. The insulating units are placed using the positioning abutments before casting of the concrete such that the insulating units are positioned between the located zones constituting load transfer zones between two construction walls (1, 2). The construction wall (1) is an exterior wall and the construction wall (2) is a slab or floor. Independent claims are also included for the following: (A) an insulating unit to limit heat bridges at a junction between two concrete walls during erection of the walls (B) reentrant units to implement a heat bridge limiting method (C) construction walls.

Description

The present invention relates to the treatment of thermal bridges

  existing at the connection or junction between two concrete building walls forming between them a given angle.

  The object of the invention is more particularly the reduction of thermal bridges that may exist at the junction between a slab and a front wall, between a front wall and a balcony or between an inner wall and an outer wall.

  For reasons of energy saving, it appears necessary to reduce the existing thermal bridges at the junction of two building walls as described above. The state of the art has proposed various solutions to try to correct these thermal bridges.

  For example, patent FR 2 790 498 proposes a method for correcting the thermal bridges between the edge of a reinforced concrete floor slab and a façade wall in which are made open pockets upwards and to the slab and distributed longitudinally at the level corresponding to the bank of the slab. The method consists of opening, in each pocketing, at least one reinforcement of the wall directed upwards. After placing the formwork of the slab, it is proceeded to the establishment of the current reinforcements of the slab and binding frames for hanging slab punctures cooperating with the reinforcement of the pits. Then, before pouring the slab, it is set up vertical sheets of insulation between the pits against the face of the wall facing the slab.

  The various stages of construction described in this patent prove in practice delicate to carry out. Indeed, it appears relatively difficult in practice on a building site, to achieve the various pockets and the establishment of reinforcements to lead in each pocketing. Another disadvantage of this technique relates to the difficulty of setting up the binding armature on the armature opening in each pocketing.

  In the prior art, it is also known from patent FR 2 827 620 another technique for reducing the thermal bridges at the level of the connection between two building walls. This patent provides, during the building phase of the first wall, to position at the right of the second wall and on the formwork structure, waiting boxes having anchor reinforcement in the first wall and reinforcements of recovery intended to be deployed to be drowned in the second wall. This technique recommends having at the end of the second wall and inside the first wall, a U-shaped insulating element to cap the waiting boxes while crossing the anchors. After casting the concrete for the realization of the first wall, it is proceeded to the building phase of the second wall during which the reinforcement plates are deployed to be embedded by the concrete.

  A major disadvantage of this technique relates to the presence of an insulating material at the level of the anchor reinforcement so that it is impossible to respect in a safe manner, the conditions of implementation of the reinforced concrete relating to the thickness of concrete surrounding the anchors. There is also a difficulty in laying the insulation element in that it is necessary to take into account the position of the anchors and the shape of the waiting boxes and magnetic elements now in position. waiting boxes.

  In this regard, it should be noted that there must be provided an insulating element for each type of waiting boxes, which has a drawback given the variety of shapes and dimensions of the waiting boxes. Furthermore, it is feared a deterioration of the insulation element especially during the installation of the various reinforcements, during the casting of the concrete and also during the extraction of the waiting boxes and magnetic elements.

  The object of the invention is therefore to overcome the drawbacks stated above by proposing a method adapted to limit thermal bridges at the junction of two building walls forming between them a given angle, such a process being designed to be of simple implementation while respecting the conditions of implementation of reinforced concrete.

  To achieve such an objective, the method according to the invention for limiting the thermal bridges during the construction of two building walls comprises: a phase for the construction of the first wall during which are positioned at the right of the second wall, standby bonding boxes having locally connecting armatures forming on one side anchor reinforcement in the first wall and on the other side of the reinforcement frames to be straightened to be embedded in the second wall, - a phase for the construction of the second wall during which the standby link casings are removed and the reinforcement frames are straightened to be embedded in the concrete.

  According to the invention, the method consists in: defining, in relation to the reinforcing bars, localized zones for concreting the connecting reinforcements, to be made on each side of each localized concreting zone, abutments of positioning for insulation elements, - in the building phase of the second wall, to set up before the pouring of the concrete and using the positioning stops, insulating elements so that they are positioned between the localized areas of concreting constituting areas of charge transfer between the two walls.

  According to a first variant embodiment, the method consists in producing the positioning stops in the building phase of the first wall by means of the setting up of reservation means, intended to be removed during the first phase. construction of the second wall in order to produce engravings with positioning stops.

  According to a second variant embodiment, the method consists in producing the positioning stops in the building phase of the second wall by equipping on each side, each insulation element with a shim abutting against an armature of reprise.

  It follows from the process described above that a second wall connected to the first wall can be obtained by localized areas of charge transfer. According to an advantageous characteristic of embodiment, the method consists, before the pouring of the concrete for the construction of the second wall, to connect the reinforcement of reinforcement with the aid of a rim reinforcement in order to constitute a continuous edge beam allowing to pass the efforts of the second wall on the localized areas of concreting. Preferably, the method consists, before pouring the concrete, to set up, at each localized concrete zone, a reinforcement of the load in the edge beam.

  Advantageously, each localized zone of concreting has a length of between 7 and 30 cm and preferably of the order of 15 cm while the length separating two localized zones of successive concreting is between 50 and 250 cm and preferably of order of 105 cm.

  According to the first embodiment, the method consists in arranging in the engravings made after removal of the reservation means, insulating elements having a depth at least equal to that of the reservation means.

  Advantageously, the method consists of having insulation elements of height at least equal to that of the second wall.

  According to the second embodiment variant, the method consists in closing at least at their ends, the housings made after the removal of the binding frame boxes pending.

  According to an exemplary embodiment, the method consists in arranging an insulating material in the housings made after the removal of the standby connection boxes and cooperating with the insulating elements provided with shims.

  Another object of the invention is to provide an isolation element for implementing the first variant embodiment of the method according to the invention. This element comprises a plate of insulating material provided on the one hand, at each end of a support block and, secondly, fixing means.

  Preferably, the plate of insulating material comprises at each end, the shutter cheeks of the housing made after the removal of the binding frame boxes pending.

  Another object of the invention relates to reservation means for implementing the first variant embodiment of the method according to the invention. Such reservation means are in the form of a body whose end faces determine the positioning stops, the body being provided with fingerprints for the reception of the binding frame boxes pending.

  Various other characteristics appear from the description given below with reference to the accompanying drawings which show, by way of non-limiting examples, embodiments of the subject of the invention.

  Figure 1 is a schematic perspective view showing a connection system according to the invention made between two walls according to a first embodiment.

  Figure 2 is a longitudinal sectional view showing a first step of making a first alternative embodiment of the method according to the invention.

  Figure 3 is a front view taken substantially along lines IIIIII of FIG. 2.

  Figure 4 is a cross-sectional view taken substantially along the lines IV-IV of FIG. 2.

  Figure 5 illustrates in plan an exemplary embodiment of reservation means illustrated in Figs. 2 to 4.

  Figure 6 is a cross-sectional view taken substantially along lines VI-VI of FIG. 5.

  Figure 7 is a view of another embodiment of the example illustrated in FIG. 2.

  Figure 8 illustrates in longitudinal section a second step of making the first variant of the method according to the invention.

  Figure 9 is a front view of the junction area shown in FIG. 8.

  Figures 10 and 11 are cross-sectional views taken respectively along lines X-X and XI-XI of FIG. 8.

  Figure 12 illustrates a first step of making a second alternative embodiment of the method according to the invention.

  Figure 13 illustrates a second step of performing the method illustrated in FIG. 12.

  FIG. 14 is a partial perspective view of an insulation element implemented as part of the process illustrated in FIG. 13.

  Figures 15 and 16 are cross sectional views taken substantially along lines XV-XV and XVI-XVI of FIG. 13.

  Figure 17 illustrates a cross-section of another embodiment of the method according to the invention illustrated in FIG. 16.

  Figure 18 is a schematic perspective view showing a connection system according to the invention made between two walls according to the second embodiment.

  Figure 19 is a cross-sectional view showing an example of application of the invention to the realization of a balcony.

  Figure 20 is a cross-sectional view showing an example of application of the invention to the realization of a slab.

  Various other characteristics appear from the description given below with reference to the accompanying drawings which show, by way of non-limiting examples, embodiments of the subject of the invention.

  The object of the invention relates to a method for limiting the thermal bridges during the construction of two building walls 1 and 2 forming between them a given angle. In the following description, the method aims to limit thermal bridges occurring at the junction between a first wall 1 such as an outer wall and a second wall 2 such as a slab or floor. Of course, the method according to the invention can be applied to wall junctions of a different type such as the junction between a front wall and a balcony, the junction between an inner wall and an outer wall.

  As is more particularly apparent from FIG. 1, the two walls 1 and 2 are interconnected by a connection system according to the invention obtained by a method for limiting thermal bridges in the junction zone J between the two walls 1, 2. It must be It is considered that this method for limiting the thermal bridges at the junction zone J of two building walls 1, 2 is implemented during the construction of these two building walls. In the context of the subject of the invention, it can be considered that the construction of the first wall is carried out during a first phase while the construction of the second wall is carried out during a second phase. subsequent. In the following description, these two phases of construction will not be fully described to the extent that the principles are well known to those skilled in the art. Only the characteristics relating to the process according to the invention will be described more precisely.

  Figs. 2 to 11 illustrate a first variant embodiment of the thermal bridge limiting method according to the invention. This method comprises a first phase for the construction of the first wall 1 as illustrated in FIGS. 2 to 4. During this first phase, waiting bonding reinforcement boxes 6 are positioned in the first wall 1 to the right of the second wall 2 shown schematically by broken lines in FIG. 4. It should be understood that the standby linkage boxes 6 extend over the entire length of the junction zone J between the two walls 1, 2.

  In a conventional manner, these stand-by bonding boxes 6 are fixed by any appropriate means on a not shown formwork structure, making it possible to delimit the first wall 1. This formwork structure will not be described more precisely insofar as it is not part of the object of the invention and is part of the conventional knowledge of the art. For example, this formwork structure is formed from banches held in position by rods and heavy studs.

  Each of the standby link reinforcement boxes 6 locally comprises connecting armatures forming on one side, anchoring reinforcement 9 in the first wall 1 and on the other side, reinforcement frames 11 intended to be straightened. to be embedded in the second wall 2. Conventionally, the anchors 9 extend along the thickness of the first wall 1 while the reinforcement 11 are bent at right angles so as to extend, before rectification, substantially parallel to the plane of extension of the main faces 11 of the first wall 1 (Figure 2). It should be understood that the standby linkage boxes 6 are positioned so that they are distributed along the first wall 1 and in line with the second wall 2, charge transfer zones Z1 between the two walls. 1, 2, punctual, discrete or localized and each having at least one connecting armature 9, 11 between the two walls.

  In the illustrated example, each localized zone of charge transfer Z1 comprises a pair of connection armatures each having an anchor reinforcement 9 which in the example illustrated has a U-shape whose ends are folded inside. the bonding reinforcement casings 6 to constitute the reinforcement plates 11. Of course, each localized zone of charge transfer Z1 may have anchor reinforcement 9 in different numbers and each having a shape which is also different from that of U shown for illustration in the drawings. In the same direction, it should be noted that in the illustrated example, the anchor frames 9 are carried by a pair of bonding frames of pending bonding 6 superimposed. Of course, the anchor frames 9 can extend from a single box of bonding links pending. Furthermore, such a box of bonding bonds waiting 6 may have a transverse cross section of any shape, and form a solid element or preferably hollow, made of any type of materials such as plastic for example. By way of example, the standby link boxes are made in accordance with the patent application FR 2 811 358.

  According to the invention, the method consists in defining each localized zone of charge transfer Z1 as a localized zone of concreting of the connecting reinforcements 9, 11. It must be understood that the binding reinforcements 9, 11 of each localized zone of Zl charge transfer are appropriately encased in concrete so that the rules for using reinforced concrete can be observed. For example, each localized concrete zone Z1 of the connecting armatures has, in consideration of the direction of extension of the junction zone J, a length 1 of between 7 and 30 cm and preferably of the order of 15 cm. Furthermore, the length L between two localized zones of concreting Z1 of the connecting reinforcement is between 50 and 250 cm and preferably of the order of 105 cm.

  According to another characteristic of the invention, the method consists in producing, on each side of each localized concrete zone Z1, positioning stops 12 for insulation elements 13 which will be positioned during the first phase. building the second wall 2.

  According to the first variant embodiment, illustrated in FIGS. 2 to 11, the positioning stops 12 are made during the building phase of the first wall 1 by means of the setting up of reservation means 15 intended to be removed during the building phase of the second wall 2. As it appears more specifically in FIGS. 2 to 6, the reservation means 15 are adapted to allow the mounting of the bonding frame boxes pending 6.

  In the example illustrated in FIGS. 2 to 6, a junction box 6 is mounted on two reservation means 15 whose transverse faces 151 vis-à-vis extend on either side of the anchoring frames 9 in a spacing corresponding to the length 1 of the localized Zl concreting zone and allowing the anchoring passage 9 of the reinforcements. The reservation means 15 are provided with imprints 16 for mounting the stand-by linkage boxes 6. It should be understood that the transverse faces 151 of the reservation means 15 extend away from an armature of anchoring 9 so as to leave a concrete coating zone for the anchor reinforcement. Each localized concrete zone Z1 which thus extends between two adjacent transverse faces 151 thus comprises the part of the concrete coating zone situated between the anchoring reinforcement 9 and the transverse face 151. Of course, the interval between two anchors 9 belonging to the same localized concrete zone is also filled with concrete. When the localized concreting zone comprises a single anchoring reinforcement 9, the localized concreting zone Z1 corresponds to the localized zone of coating of said reinforcement.

  In the illustrated example, the length of the indentations 16 is adapted to the length of the standby linkage boxes 6 so that when a standby linkage box 6 is mounted on two reservation means 15, the latter define, by their opposite transverse faces 151, a spacing width 1. The reservation means 15 are placed end to end by torque on the formwork structure by any appropriate means such as magnetic elements for example. Of course, the pending link reinforcement boxes 6 and / or the reservation means 15 may be made differently. Thus, it can be expected to produce in one piece, two reservation means 15 placed between two localized areas Zl concreting to reduce the number of parts. It should be noted, however, that the use of two reservation means 15 between two localized Zl concreting zones facilitates their removal operation after the casting of the first wall. In the same direction, it can be envisaged to use stand-by bonding boxes 6 having several point reinforcements 9, 11 as illustrated in FIG. 7. According to this example, the standby linkage boxes 6 are mounted end to end.

  The building phase of the first wall 1 then consists of pouring concrete so as to produce the first wall 1.

  For the construction of the second wall 2, the formwork structure of the first wall 1 is removed as well as the standby connection boxes 6 and the reservation means 15. The reinforcement frames 11 are straightened substantially at the same time. as shown in Figs. 8 to 10. The withdrawal of the reservation means 15 allows to remain in the first wall 1, housing or engravures 19 extending between the localized Zl concreting areas. Each engravure 19 is delimited on either side by a positioning stop 12 defining two by two a localized Zl concreting zone.

  According to another characteristic of the subject of the invention, the method consists in setting up, by means of the positioning stops 12, the insulating elements 13 cooperating with the engravings 19 so that these insulating elements 13 are positioned between the localized Zl concreting zones.

  After the positioning of these insulating elements 13 inside the engravures 19, it is proceeded, after the establishment of a formwork structure, pouring concrete so as to achieve the second wall 2.

  It should be noted that the insulation elements 13 are each advantageously in the form of a plate of a thermal insulation material with a fire-resistant ability. Each insulation element 13 preferably has a length equal to the length L of an engravure 19 and is optionally equipped with fastening means on the wall 1. Each insulation element 13 has a depth at least equal to that of the reservation means 15. In the exemplary embodiment illustrated in FIG. 11, each insulation element 13 has a depth substantially equal to the depth of the reservation means 15 so that the insulation element 13 extends substantially to the right of the extension face of the face of the first wall 1, which is turned towards the second wall 2. Of course, it may be envisaged to provide an insulating material such as protruding from the first wall 1 to the right of the second wall 2.

  According to another characteristic of the invention, each insulating element 13 has a height h at least equal to that of the second wall 2. Preferably, it can be provided, as illustrated in FIG. 11, the height of each insulating member 13 is greater than the height of the second wall 2 so as to protrude on either side of this second wall 2. Thus, the laying of an insulating material 21 of cover of the first wall 1 thus covers the part of the insulating elements 13 projecting on either side of the second wall 2. Of course, the reservation means 15 have dimensions adapted to allow to define engravures 19 for the insulation elements 13 with the dimensions stated above.

  It follows from the foregoing description that the thermal bridge between the walls 1 and 2 is extremely small compared to the constructions that do not implement the connection system according to the invention. On either side of the insulation elements 13, there appear localized areas of charge transfer each corresponding to a localized Zl concreting zone which complies with the rules for implementing the reinforced concrete. It follows from the foregoing description that the rules for implementing reinforced concrete can be safely and easily met by the manufacturing method described above.

  Figs. 12 to 18 illustrate a second variant embodiment of the method according to the invention. This second embodiment differs from the first variant in that the positioning stops 12 are made in the building phase of the second wall 2 while in the first embodiment, the positioning stops 12 are made during the phase of construction of the first wall 1. It follows that the localized areas of concreting Zl connecting armatures are defined during the building phase of the second wall 2.

  According to this second variant embodiment, the first wall 1 is constructed by positioning, as explained above in the first wall 1 and at the right of the second wall 2, standby link casings 6 containing locally anchor reinforcement 9 in the first wall 1 and reinforcement 11. For example, the standby link reinforcement caissons 6, which generally have several anchor reinforcement 9, are mounted end to end in order to obtain localized Zl concreting zones all along the J junction zone. After the concrete pouring operation, the pending link reinforcement caissons 6 are removed leaving behind engravings or dwellings 19 'and the reinforcement armatures 11 are substantially squared off as explained above (FIG 13).

  During the building phase of the second wall 2, provision is made to equip each isolation element 13 on either side with a wedge 25 bearing against a reinforcement 11. The presence of a support wedge 25 makes it possible to leave a concrete coating zone in relation to each return reinforcement 11. The transverse faces 131 of two neighboring insulation elements 13 thus extend along a spacing distance corresponding to the length 1 of a localized concrete zone Z1. The positioning of these insulating elements 13 is simple to carry out insofar as it suffices to place the wedges 25 in contact with the reinforcement plates 11.

  Each insulation element 13 is in the form of a plate of insulating material provided at each end 131 with a support wedge 25 which, preferably, is perforated to allow the passage of concrete. This insulating plate 13 is also preferably equipped with fixing means 26 of any type such as adhesive. More preferably, each plate of insulating material 13 is provided with protection means 27 such as U-shaped profiles to cap the edges of the plates. It should be noted that this plate of insulating material 13 may be provided with anchoring means to cast concrete during the building phase of the second wall 2. These anchoring means may be made by various elements such as wires. spiral extending protruding from the main face of the plate 13 opposite the face equipped with the fastening means 26. Each insulating plate 13 has a height equal to the height of the second wall 2.

  According to a preferred embodiment, the insulation plate 13 comprises at each end, a closure cheek 28 of complementary shape to the engravure or the housing 19 'left after the removal of the bonding frame boxes pending 6 In other words, each shutter cheek 28 has a shape substantially identical to the transverse cross section of the bonding reinforcement boxes 6. These cheeks 28 prevent the concrete during the operation of pouring for the realization of the second wall 2 comes insert inside the housings 19 'made after removal of the standby connection boxes 6, and this outside the localized Z1 concrete zones.

  As is more particularly apparent from FIG. 18, the insulating elements 13 extend according to this second variant projecting with respect to the extension face 11 of the first wall 1. According to one embodiment, it can be provided to dispose a material of insulation 30 in the housings 19 'made after the withdrawal of the standby connection boxes 6 (Fig. 17). Preferably, the insulation material 30 is an integral part of the insulation element 13 so as to facilitate the laying operation.

  In the example described in relation to FIGS. 2 to 11, the insulation of the first wall 1 is made using the cover insulation 21, on the inside of the wall 1. Of course, the method according to the invention can be implemented by realizing the insulation of the wall 1 on the outside. In this regard, FIG. 19 illustrates an exemplary embodiment in which the insulation is formed on the outer side of the wall 1 also equipped as a wall 2 of a balcony made to the right of a slab 2 '. The walls 1 and 2 are made according to the method described above. It should be noted that during the building phase of the first wall 1, standby connection boxes are positioned on the opposite face of the wall 1 receiving the standby connection boxes 6 in a manner to set up binding frames 9 ', 11' between the first wall 1 and the slab 2 '.

  It should be noted that in the case of the production of a second wall 2 corresponding to a slab, it is advantageous as is more particularly apparent in FIG. 20, before the pouring operation of the concrete for the production of the second wall 2, to set up a shore reinforcement 40 interconnecting the reinforcement plates 11 to form in the second wall 2, a continuous edge beam allowing to transfer the forces on the localized areas of charge transfer Z1.

  Advantageously, before the pouring of the concrete, a load-lifting frame 41 in the edge beam 40 is put in place at each localized concrete zone Z1. Indeed, efforts concentrated on such areas must be raised in the bank beam 40 so as to be able to refer to the load-bearing wall, namely the first wall 1. The lifting of the load is carried out using a vertical frame 41 in the form of stirrup, pin or any other suitable form.

  The invention is not limited to the examples described and shown because various modifications can be made without departing from its scope.

Claims (14)

  1 - A method for limiting the thermal bridges during the construction of two building walls (1, 2) forming between them a given angle, the method comprising: - a phase for the construction of the first wall (1) to in which are positioned at the right side of the second wall (2), standby connection boxes (6) locally comprising connecting armatures forming on one side, anchoring frames (9) in the first wall and on the other side, reinforcement plates (11) to be straightened to be embedded in the second wall, - a phase for the construction of the second wall (2) during which the reinforcement boxes linkages pending (6) are removed and the reinforcement plates (11) are straightened so as to be embedded in the concrete, characterized in that it consists: - to define in relation to binding reinforcements, localized zones of concreting of connection reinforcement (Z1), - in reality on either side of each localized concrete zone (Z1), positioning stops (12) for insulation elements (13), - in the second wall building phase, to be put in place. before pouring the concrete and using the positioning stops (12), insulating elements (13) so that they are positioned between these localized concreting zones (Z1) constituting charge transfer zones between the two walls.   2 - Process according to claim 1, characterized in that it consists in making the positioning stops (12) in the building phase of the second wall (2) by equipping on each side each insulation element (13) by a shim (25) bearing against a reinforcement frame (11).   3 - Process according to claim 1, characterized in that it consists in producing the positioning stops (12) in the building phase of the first wall (1) using the establishment of reservation means (15), intended to be removed during the building phase of the second wall (2) to achieve engravures (19) having positioning stops (12).   4 - Process according to one of claims 1 to 3, characterized in that it consists, before pouring the concrete, to connect the reinforcement plates (11) with a rim reinforcement (40) to constituting a continuous edge beam for passing the forces of the second wall (2) on the localized areas of concreting (Z1).   - Method according to claim 4, characterized in that it consists, before pouring the concrete, to set up, at each localized concrete zone (Z1), an armature lift the load (41) in the bank beam.   6 - Process according to one of claims 1 to 5, characterized in that each localized concrete zone (Zl) has a length of between 7 and 30 cm and preferably of the order of 15 cm while the length between two Localized zones of concreting (Zl) successive is between 50 and 250 cm and preferably of the order of 105 cm.   7 - Process according to claim 3, characterized in that it consists in arranging in the engravures (19) made after removal of the reservation means (15), insulating elements (13) having a depth at least equal to that reservation means.   8 - Process according to claim 7, characterized in that it consists in arranging the insulating elements (13) of height at least equal to that of the second wall.   9 - Process according to claim 2, characterized in that it consists in arranging the insulating elements (13) of height equal to that of the second wall (2).   - Method according to claim 2, characterized in that it consists in closing at least at their ends, the housings (19 ') made after removal of the standby connection boxes pending (6).   11 - Process according to claim 10, characterized in that it consists in arranging an insulating material (30) in the housings (19 ') made after the removal of the connecting connection boxes pending (6), cooperating with the insulating members (13) provided with the shims (25).   12 - Insulating element for limiting the thermal bridges during the construction of two building walls (1, 2) according to the process according to claim 1, characterized in that it comprises a plate of insulating material (13) provided on the one hand, at each end of a support wedge (25) as a positioning stop (12) and, secondly, fastening means (26).   13 - Insulating element according to claim 12, characterized in that the plate of insulating material (13) comprises at each end, shutter cheeks (28) housing (19 ') made after the withdrawal of the caissons bonding frames waiting (6).   14 - Insulating element according to claim 12 or 13, characterized in that the plate of insulating material (13) is equipped with concrete anchoring means.   - Insulation element according to one of claims 12 to 14, characterized in that the insulating material plate (13) has a height equal to that of the second wall (2).   16 - Reservation means for carrying out the method according to claims 1 and 3, characterized in that they are in the form of a body whose end faces determine the positioning stops (12), the body being provided with imprints (16) for receiving the standby linkage boxes (6).   17 - Construction walls characterized in that they comprise a connection system produced by the method according to one of claims 1 to 11.