Tool for the in situ construction of a sandwich wall, and method applying same

Abstract

A tooling for manufacturing a wall with two concrete walls, between which at least one insulation panel is trapped includes at least one system for positioning the insulation panel composed, on one hand of a dagger having a rod provided with a bearing stop and, on the other hand, of a lock provided with a counter-stop. The lock has at least two notches for receiving a first reinforcement, arranged locally on the circumference of the positioning system, extending set back from a first end of the rod, delimited on either side by retaining stops spaced apart so as to maintain in position the first reinforcement, and defines a housing with a profile converging in the opposite direction to their opening, and arranged according to the length of the positioning system to be able to adjust the position of the first reinforcement according to the length of the positioning system.

Claims

1. A tooling for manufacturing a wall (1) with two concrete walls (2, 3) between which at least one insulation panel (4) is trapped, this tooling including at least one positioning system (8) of the insulation panel (4), wherein the positioning system (8) comprises: a dagger (10) having a rod (12) provided with a bearing stop (13) and, a lock (11) provided with a counter-stop (16), the rod (12) having a first end (12.sub.1) intended to be in contact with a first form panel (6) and a second end (12.sub.2) intended to be in contact with a second form panel (7), so that a distance between the first and the second end is equal to a thickness of the wall (1), characterized in that the lock (11) is provided with at least two notches (17) for receiving a first reinforcement (5.sub.1), the at least two notches (17) being arranged on a circumference of the positioning system, extending between the first end (12.sub.1) of the rod (12) and the counter-stop (16), and being delimited by retaining stops (18), the retaining stops (18) being spaced apart so as to maintain in position the first reinforcement (5.sub.1), each of the at least two notches defining a housing with a profile converging in an opposite direction to a housing opening and arranged along the at least one positioning system (8) so as to be able to adjust the position of the first reinforcement (5.sub.1) according to a length of the positioning system (8).

2. The tooling according to claim 1, characterized in that the retaining stops (18) include a locking detent (20) at an opening of the notches (17).

3. The tooling according to claim 1, characterized in that the at least one positioning system (8) comprises a first hook (14) extending radially between the first end (12.sub.1) of the rod (12) and the counter-stop (16), and delimiting a first retaining stop (18.sub.1).

4. The tooling according to claim 1, characterized in that the at least one positioning system (8) comprises a second hook (21), angularly orientable and extending set back from the second end (12.sub.2) of the rod (12), in order to maintain in position a second reinforcement (5.sub.2).

5. The tooling according to claim 1, characterized in that a distance between the bearing stop (13) and the counter-stop (16) is equal to a thickness of the insulation panel (4).

6. The tooling according to claim 1, characterized in that the tooling includes devices for assembling (9) the form panels (6, 7) together, each device for assembling (9) including a tubular spacer (26), the tubular spacer (26) having an inside adapted to receive a tightening rod, each end of the tightening rod adapted for receiving a tightening member.

7. The tooling according to claim 1, characterized in that the lock (11) and the dagger (10) include assembly means (22, 23, 24) making possible to fix the lock (11) on the rod (12) in a fixed position along the rod (12).

8. The tooling according to claim 7, characterized in that the assembly means include at least one lug (22) arranged on the rod (12) of the dagger and cooperating with a housing (23) arranged on the lock (11) after rotation thereof.

9. The tooling according to claim 7, characterized in that the assembly means (22, 23, 24) between the lock (11) and the dagger (10) are of an irreversible or repositionable type.

10. The tooling according to claim 1, characterized in that one or more washers are threated on the rod (12) and are in contact with the bearing stop (13), defining with the counter-stop (16) a thickness of the insulation panel (4).

11. A method for manufacturing a wall (1) with two concrete walls (2, 3), between which at least one insulation panel (4) is trapped, the two concrete walls (2, 3) being manufactured simultaneously or substantially simultaneously by pouring concrete between the insulation panel (4) and a first form panel (6), and between the insulation panel (4) and a second form panel (7), the form panels (6, 7) being disposed on either side of the insulation panel (4), a first reinforcement (5.sub.1) being placed on a side of the inner face of the first form panel (6), the insulation panel (4) being held between the two form panels (6, 7), before pouring the concrete, using positioning systems (8) passing through the insulation panel (4) and bearing on inner faces of the form panels (6, 7), the positioning system (8) comprising: a dagger (10) having a rod (12) provided with a bearing stop (13) and, a lock (11) provided with a counter-stop (16), the method being characterized by: placing on each insulation panel (4) before positioning thereof, positioning systems (8), each positioning system (8) including at least two notches (17) for receiving the first reinforcement (5.sub.1), the at least two notches being delimited by retaining stops (18), said retaining stops (18) being spaced apart so as to maintain in position the first reinforcement (5.sub.1), and extending between a first end (12.sub.1) of the rod (12) and the counter-stop (16), the at least two notches defining a housing with a profile converging in an opposite direction to a housing opening and arranged along the positioning system (8), and positioning each insulation panel (4) with passage of the positioning systems (8) through the first reinforcement (5.sub.1), the at least two notches (17) through which the first reinforcement (5.sub.1) can be maintained allowing a positioning of the first reinforcement (5.sub.1).

12. The method according to claim 11, characterized in that said method comprises placing a second reinforcement (5.sub.2) on the side of the inner face of the second form panel (7), passage of at least a second hook (21) angularly orientable and extending set back from a second end (12.sub.2) of the rod (12) and assembly of the at least a second hook (21) with said second reinforcement (5.sub.2).

13. The method according to claim 11, characterized in that the positioning systems (8) are placed on each insulation panel (4) by threading the rod (12) of the dagger (10) up to the bearing stop (13), the lock (11) provided with the at least two notches (17) being assembled on the rod (12) protruding from the insulation panel (4), when the counter-stop (16) carried by the lock (11) bearing against the insulation panel (4).

14. The method according to claim 11, characterized in that the two form panels (6, 7) are maintained in position using assembly devices (9) by placing, each assembly device (9), before positioning the second form panel (7), being a tubular spacer (26) passing through the insulation panel (4) and after positioning the second form panel (7), sealingly bearing on the inner faces of the form panels (6, 7), each tubular spacer (26) having an inside adapted to receive a tightening rod, each end of the tightening rod adapted for receiving a tightening member.

15. The method according to claim 11, characterized in that the positioning of each insulation panel (4) with passage of the positioning systems (8) through the first reinforcement (5.sub.1) further includes a rotation of the positioning systems (8) to ensure the engagement of the first reinforcement (9.sub.1) in one of the at least two notches (17).

16. The method according to claim 11, characterized in that said method comprises placing a second reinforcement (5.sub.2) on the side of an inner face of the second form panel (7), with rotation for passage of at least a second hook (21) angularly orientable and extending set back from a second end (12.sub.2) of the rod (12) and assembly of the at least a second hook (21) with said second reinforcement (5.sub.2).

17. The method according to claim 11, characterized in that the positioning systems (8) are placed on each insulation panel (4) by threading the rod (12) of the dagger (10) up to the bearing stop (13), the lock (11) provided with the at least two notches (17) being assembled on the rod (12) protruding from the insulation panel (4), the counter-stop (16) carried by the lock (11) bearing against the insulation panel (4) in the presence of one or more compensating washers.

Description

(1) Various other characteristics will emerge from the description given below with reference to the appended drawings which show, by way of non-limiting examples, embodiments of the object of the invention.

(2) FIG. 1 is a perspective view showing a wall according to the invention manufactured by the method according to the invention.

(3) FIG. 2 is a side view of a positioning system according to the invention.

(4) FIG. 3 is a perspective view of an embodiment of the lock of a positioning system according to the invention.

(5) FIG. 4 is a perspective view illustrating a dagger of a positioning system according to the invention.

(6) FIG. 5 is a perspective view showing an exemplary embodiment of an assembly device according to the invention.

(7) FIGS. 6A to 6G illustrate successive steps of a method for manufacturing a wall according to the invention.

(8) FIG. 7 is a perspective view showing the mounting of a positioning system through reinforcements.

(9) As shown more precisely in FIG. 1, the object of the invention relates to a method allowing the manufacture of a wall 1 with two concrete walls 2, 3, between which at least one insulation panel 4 is trapped. The wall 1 thus includes a first concrete wall 2, and a second concrete wall 3 on either side of the insulation panel 4. In the example illustrated in FIG. 1, the two concrete walls 2, 3 are vertical and substantially parallel. This embodiment is however not limiting and the walls 2, 3 are not necessarily vertical and/or substantially parallel.

(10) The insulation panel 4 is made of any thermal insulation material, such as, for example, of polystyrene.

(11) The walls 2, 3 are manufactured simultaneously or substantially simultaneously, by pouring in situ of concrete between the insulation panel 4 and a first form panel 6 on the one hand, and between the insulation panel 4 and a second form panel 7 on the other hand. The form panels 6, 7 are disposed on either side of the insulation panel 4 and at a distance therefrom. The form panels 6, 7 are either inner or outer form panels. The first form panel 6 extends opposite a first face 4.sub.1 of the insulation panel 4, parallel or non-parallel thereto, and at a determined distance therefrom corresponding to the thickness of the first wall 2, while the second form panel 7 extends opposite the outer face 4.sub.2 of the insulation panel 4, parallel or non-parallel thereto, and at a determined distance therefrom corresponding to the thickness of the second wall 3.

(12) The first wall 2 incorporates a reinforcement, called first reinforcement 5.sub.1, of any type known per se. The first reinforcement 5.sub.1 can be manufactured by one or more meshes or rebars placed before pouring the concrete, between the insulation panel 4 and the first form panel 6.

(13) According to a preferred characteristic of embodiment, the second wall 3 also incorporates a reinforcement, called second reinforcement 5.sub.2, of any known type, placed before pouring the concrete, between the insulation panel 4 and the second form panel 7. The two reinforcements 5.sub.1 and 5.sub.2 can be identical or different, and are advantageously of the same nature.

(14) The method according to the invention is implemented using a suitable tooling including positioning systems 8 allowing to maintain the insulation panel 4 and the reinforcement 5 between the form panels 6, 7 and possibly to maintain the assembly devices 9 of the form panels 6, 7 together, independently of the positioning systems 8.

(15) Each positioning system 8 includes in the exemplary embodiment illustrated in FIGS. 2 to 4 and 6, a first part such as a dagger 10 on which a second part such as a lock 11 is intended to be assembled.

(16) The dagger 10 includes a rod 12 intended to be inserted through the insulation panel 4 from one of the faces 4.sub.1, 4.sub.2 of the insulation panel 4. The rod 12 includes a first end 12.sub.1 extending opposite a second end 12.sub.2. The rod 12 is intended to bear through its ends 12.sub.1, 12.sub.2, against the inner faces of the form panels 6, 7. The rod 12 has a length equal to the thickness of the manufactured wall 1. According to a preferred variant, the rod 12 can have, from one of its ends, and preferably from its two ends, sectionable portions which are precut or predefined that allow adjusting the length of the rod 12 to the thickness of the wall 1 to be manufactured. According to another variant, a family of daggers 10 can be manufactured including rods 12 of different lengths, thus making it possible to manufacture walls of different thicknesses.

(17) The rod 12 is provided with a bearing stop 13 placed in the vicinity of the second end 12.sub.2 to come into contact with the second face 4.sub.2 of the insulation panel 4. For example, the bearing stop 13 is manufactured in the form of a disc extending transversely with respect to the rod 12. This bearing stop 13 is distant from the second end 12.sub.2 of the rod 12 according to a distance corresponding to the thickness of the second wall 3. The adjustment of the length of the rod 12 from the second end 12.sub.2 allows adapting to the thickness of the second wall 3.

(18) The width between the second end 12.sub.2 of the rod 12 and the second face 4.sub.2 of the insulation panel 4 can be adjusted using one or more washers threaded on the rod 12 from the first end 12.sub.1, until it comes into contact on the bearing stop 13. Placing these washers makes it possible to move the bearing for the insulation panel 4 away from the second end 12.sub.2. Preferably, the rod 12 has from the bearing stop 13, longitudinal slots arranged on the periphery of the rod 12 up to the first end 12.sub.1 which has a bevelled shape to facilitate the passage through the insulation panel 4.

(19) The lock 11 is in the form of a tubular sleeve 15 intended to be threaded on the rod 12 from its first end 12.sub.1. This tubular sleeve 15 is provided with a counter-stop 16 intended to bear on the first face 4.sub.1 of the insulation panel 4. In the example illustrated, the counter-stop 16 is in the form of a disc extending transversely or radially from the proximal end of the tubular sleeve 15.

(20) The lock 11 also includes a first hook 14 extending radially set back from the first end 12.sub.1 of the rod 12, and for example from the distal end of the tubular sleeve 15, as represented in FIG. 2. In the illustrated exemplary embodiment, the first hook 14 is in the form of a plate of substantially rectangular shape, of limited angular width of the order of ten degrees, extending perpendicularly to the rod 12 and protruding from the tubular sleeve 15.

(21) The lock 11 also includes at least two notches 17, or groove or indentation, for receiving a first reinforcement 5.sub.1, adapted to cooperate with the first reinforcement 5.sub.1. The notches 17 are delimited on either side by retaining stops 18, spaced apart so as to maintain and block in position the first reinforcement 5.sub.1. The notches are arranged locally on the circumference of the tubular sleeve 15 of the positioning system 8 and extend set back from the first end 12.sub.1 of the rod 12.

(22) More precisely, the lock 11 includes at least one notch 17.sub.1 delimited on either side by two retaining stops 18.sub.1 and 18.sub.z, respectively delimited by the sides of the first hook 14 and of a first wing or spine 19.sub.1. The first wing or spine 19.sub.1 is arranged locally on the circumference of the tubular sleeve 15 of the positioning system 8, and extends radially set back from the first hook 14 according to the length of the positioning system 8, one behind the other.

(23) Advantageously, each notch 17 defines a housing for the first reinforcement 5.sub.1, with a profile which, according to the length of the positioning system 8, is converging in the opposite direction to its opening. In other words, each notch 17 has a triangular-shaped housing. This geometry allows each notch to cooperate with reinforcements of different sizes.

(24) The first retaining stop 18.sub.1 is advantageously substantially perpendicular to the rod 12. The second retaining stop 18.sub.2 is advantageously oblique with respect to the rod 12 while being oriented in the direction of the first hook 14. This geometry advantageously makes it possible to optimize the blocking in position of the first reinforcement 5.sub.1 during the concrete pouring operation.

(25) The lock 11 may include several, in particular two, three or four, receiving notches 17 arranged one behind the other according to the length of the tubular sleeve 15 by the incorporation of wings or spines 19. According to one particular embodiment represented in FIGS. 2 and 3, the lock 11 includes two notches 17 for receiving a first reinforcement 5.sub.1, thanks to the presence of the first hook 14 and of two wings 19.sub.1 and 19.sub.2.

(26) The receiving notches 17 are arranged according to the length of the positioning system 8. It is then possible to adjust the position of the first reinforcement 5.sub.1, thanks to the choice of the notch 17 in which the first reinforcement 5.sub.1 will be maintained. The different notches can be of identical or different dimensions, and particularly of identical or different height. The wings or spines 19 have preferably a triangular shape, as is illustrated in particular in the exemplary embodiment of FIG. 2.

(27) The wings or spines 19 as well as the first hook 14 include a locking detent 20 at the opening of the notch, in order to avoid any movement of the reinforcement during the concrete pouring operation, More specifically, each notch 17 includes a locking detent 20 on one of the stops delimiting it, and preferably on the end of the stop corresponding to the opening of the notch. Each locking detent is preferably located on a retaining stop 18 obliquely to the rod 12 and oriented in the direction of the first hook 14.

(28) According to one embodiment, the dagger 10 includes a second hook 21 adapted to cooperate with a second reinforcement 5.sub.2. The second hook 21 thus extends radially set back from the second end 12.sub.2 of the rod 12, and for example from the bearing stop 13 as represented in FIG. 4. In the illustrated exemplary embodiment, the second hook 21 is in the form of a plate of substantially rectangular shape, of limited angular width of the order of ten degrees, and extends protruding from the rod 12. The second hook 21 is angularly orientable, and thus allows maintaining in position the second reinforcement 5.sub.2 during the concrete pouring operation.

(29) The lock 11 and the dagger 10 include assembly means making it possible to fix the lock 11 on the rod 12 in a fixed position along the rod 12, such that the bearing stop 13 and the counter-stop 16 are respectively bearing on the faces 4.sub.1, 4.sub.z of the insulation panel 4. In the exemplary embodiment illustrated in FIGS. 3 and 4, the assembly means include at least one lug 22 carried by the rod 12 and intended to cooperate with at least one complementary housing 23 arranged on the tubular sleeve 15. The housing 23 opens laterally in a slot 24 arranged in the tubular sleeve 15 up to the proximal end of the tubular sleeve 15. In other words, the slot 24 opens into the housing 23 which has, in an angularly offset manner, a shape complementary to the lug 22 to ensure its blocking in translation along the axis of the rod 12.

(30) The lug 22 is positioned on the rod 12 such that in the position of cooperation with the housing 23 of the lock 11, the distance between the bearing stop 13 and the counter-stop 16 corresponds to the thickness of the insulation panel 4. According to a preferred variant, the assembly means are adapted to allow adjusting the distance between the bearing stop 13 and counter-stop 16. According to this variant, the rod 12 is provided with a series of lugs 22 distributed over the length of the rod 12 to correspond to various conventional thicknesses of the insulation panel 4. These lugs 22 are also distributed angularly on the periphery of the rod 12 so as to be able to each penetrate into a corresponding slot 24 arranged on the lock 11. The lock 11 thus includes as many slots 24 and housings 23 as lugs 22, these slots 24 being angularly offset together by a value equal to the angular offset presented by the lugs 22 on the rod 12. This dagger 10 and this lock 11 allow being used for various thicknesses of the insulation panel 4 by choosing the cooperation of the suitable lug with its corresponding housing.

(31) In practice, the lock 11 is engaged on the rod 12 by engaging the tubular sleeve 15 through its proximal end from the first end 12.sub.1 of the rod 12, while making each slot 24 angularly coincide with a lug 22. The lock 11 is slid closer to the bearing stop 13 until bearing against the first face 4.sub.1 of the insulation panel 4. In this position, at least one lug 22 opens into a housing 23 so that a relative rotation between the lock 11 and the rod 12 leads to the blocking of the lug 22 in the complementary housing 23, thus preventing any translation or sliding movement of the lock 11 on the rod 12. In this position, the insulation panel 4 is provided with one or more positioning systems 8.

(32) The assembly means 22, 23, 24 between the lock 11 and the dagger 10 are of the irreversible or repositionable type.

(33) When the assembly means 22, 23, 24 between the lock 11 and the dagger 10 are of the irreversible type, irreversibility means 25 prohibit the relative rotation in an opposite direction between the lock 11 and the rod 12 after the assembly between the lock 11 and the dagger 10 obtained following the relative rotation between the lock 11 and the rod 12. These irreversibility means 25 allow effective blocking in position between the lock 11 and the rod 12. By way of example, these irreversibility means 25 are manufactured by elastically deformable fingers adapted to be deformed by the lugs 22 during the rotational movement of the lugs 22 bringing them into the housings 23. When the deformable fingers are no longer loaded by the lugs 22, these return to their initial position ensuring the blocking of the lugs 22 inside the housings 23, preventing their rotation in a direction leading them to leave the housings 23.

(34) FIG. 5 illustrates an exemplary embodiment of an assembly device 9 according to the invention, including a tubular spacer 26 delimiting internally a bore 27. This tubular spacer 26 is intended to penetrate into the insulation panel 4, from its second face 4.sub.2 and bear against the inner faces of the form panels 6, 7. The tubular spacer 26 has, relative to its direction of penetration into the insulation panel 4, a downstream end 26.sub.1 and an upstream end 26.sub.2. The tubular spacer 26 is externally provided with sharp or cutting elements 28 adapted to cut the insulation panel 4 during the mounting of the tubular spacer 26 in the insulation panel 4 by a rotational movement of the tubular spacer 26. For example, the cutting elements 28 are distributed helically or in a screw pitch facilitating its penetration into the insulation panel 4 engaged along its downstream end 26.sub.1.

(35) According to an advantageous characteristic of embodiment, the downstream end 26.sub.1 of the tubular spacer 26 includes penetration assistance teeth 29 making it possible to initiate the operation of cutting the insulation panel 4. Advantageously, the teeth 29 are adapted to crush against the inner face of the first form panel 6 or of the second form panel 7, contributing to the sealing between the form panel 6 or 7 and the tubular spacer 26.

(36) According to another advantageous characteristic of embodiment, the tubular spacer 26 includes at its upstream end 26.sub.2, a peripheral flange 30 of deformable nature intended to crush by tightening in order to ensure sealing between the other form panel 6 or 7 and the tubular spacer 26.

(37) According to a particular characteristic of embodiment, the tubular spacer 26 includes at its upstream end also a gripping member 31, such as a disc, extending transversely to the length of the tubular spacer 26. Preferably, this gripping member includes at its periphery, a detent in order to facilitate its handling in particular during its insertion in the insulation panel 4.

(38) Advantageously, the bore 27 of the tubular spacer 26 includes from its upstream end 26.sub.2, a prismatic shape making it possible to cooperate with an operating or screwing tool facilitating the operation of penetration into the insulation panel 4.

(39) According to an advantageous variant, the tubular spacer 26 includes at each end a removable ring. Thus, one of the removable rings includes the teeth 29 while the other removable ring includes the peripheral flange 30 and a prismatic shape for the handling. These rings are mounted for example by interlocking, at each end of the tubular spacer 26. These rings have an external shape in relief allowing their removal, relative to the spacer and to the concrete walls 2, 3, after their formation.

(40) The assembly device 9 also includes a tightening rod (not illustrated) that would pass inside the bore 27 and pass through the form panels 6 and 7. This tightening rod would protrudes on either side of the form panels 6 and 7 to allow a screwing of tightening members (not illustrated) such as nuts.

(41) The method for manufacturing a wall 1 stems directly from the description above.

(42) The method according to the invention consists in equipping the insulation panel 4 with one or more positioning systems 8 according to the invention.

(43) As apparent more specifically from FIGS. 6A to 6G, the method consists in engaging the rod 12 through its first end 12.sub.1 in the insulation panel 4 until the bearing stop 13 comes into contact directly (or via one or more added compensating washers, not represented in the figures), with the outer face 4.sub.2 of the insulation panel 4. In this position, the rod 12 is protruding relative to the inner face 4.sub.1 of the insulation panel 4. The lug(s) 22 are thus located on the side of the inner face 4.sub.1 of the insulation panel 4. The method according to the invention then consists in ensuring the mounting of the lock 11 on the rod 12 protruding from the face 4.sub.1 of the insulation panel 4. The tubular sleeve 15 of the lock 11 is threaded on the rod 12 from its first end 12.sub.1, As can be seen more specifically in FIG. 66, the lock 11 is translated such that the counter-stop 16 bears with the inner face 4.sub.1 of the insulation panel 4. During this translation, the lock 11 is angularly oriented such that a lug 22 slides in a complementary slot 24. When the counter-stop 16 is bearing on the inner face 4.sub.1 of the insulation panel 4, the lock 11 is turned angularly relative to the rod 12 so as to bring the lug 22 in the complementary housing 23 to allow the locking of the lock 11 in a fixed position on the rod 12. At the end of the mounting operation, the dagger 10 and the lock 11 are assembled by a complete connection.

(44) Independently of the mounting of the positioning system 8 and of the assembly device 9, the method for manufacturing a wall consists in placing the first form panel 6 in situ to manufacture the wall 1. Of course, the first form panel 6 is placed in a conventional manner by any known bracing equipment or tool which will not be described more specifically in the following description. In the same sense, the following description describes the manufacture of a wall using two form panels 6, 7 but it is clear that, in a conventional manner, the walls require the manufacture of a first and a second framework implementing in particular a series of first and second form panels placed side by side according to a bed or two superimposed beds depending on the height of the wall to be manufactured. This placing technique is not described more specifically because it uses conventional construction techniques well known to those skilled in the art. Conventionally, each form panel 6, 7 includes through holes respectively 6.sub.1, 7.sub.1 for the passage of a tightening rod.

(45) The method according to the invention consists, as illustrated in FIG. 6A, of placing a first reinforcement 5.sub.1 relative to the first form panel 6. Placing this first reinforcement 5.sub.1 is not described more specifically because it is well known to those skilled in the art. In the same sense, the reservation dummy bars for the openings or frames to be shuttered are positioned on the first form panel 6 before placing the first reinforcement 5.sub.1.

(46) The method according to the invention then consists in positioning the insulation panel 4 relative to the first form panel 6 in front of which the first reinforcement 5.sub.1 is positioned. As seen from FIG. 6B, the insulation panel 4 is positioned so as to allow the abutment of the first end 12.sub.1 of the rod 12 bearing on the inner face of the first form panel 6 and to allow the first hook 14 to pass through the first reinforcement 5.sub.1 with a view to cooperation between the first reinforcement 5.sub.1 and the first hook 14 after the operation of blocking the first reinforcement 5.sub.1 thanks to the positioning system 8.

(47) The method according to the invention then consists in placing a second reinforcement 5.sub.2 on the side of the second face 4.sub.2 of the insulation panel 4, as illustrated in FIG. 6C, according to techniques well known to those skilled in the art. The second reinforcement 5.sub.2 then passes through the second reinforcement 5.sub.2 and is positioned so as to cooperate with the second hook 21 after the operation of blocking the second reinforcement thanks to the positioning system 8.

(48) The rod 12 is then turned using an operating handle to allow the notch 17 and the second hook 21 to cooperate respectively with the first reinforcement 5.sub.1 and the second reinforcement 5.sub.2, as represented in FIGS. 6D and 7, and thus allow the blocking in position of the reinforcements 5.sub.1 and 5.sub.2. The positioning system 8 thus ensures, by means of the notch 17 and of the second hook 21, an assembly of the insulation panel 4 relative to the first and to the second reinforcement 5.sub.1, 5.sub.2 and a positioning relative to the first form panel 6. Since the lock 11 includes several notches 17, the choice of the notch through which the reinforcement will be maintained makes it possible to adjust the position of the first reinforcement relative to the first face 4.sub.1 of the insulation panel 4.

(49) The method according to the invention then consists in placing the devices for assembling 9 the form panels 6, 7, by placing one or more tubular spacers 26 intended to be established between the two form panels 6, 7. The method according to the invention therefore consists in placing each tubular spacer 26 in alignment with a hole 6.sub.1 arranged in the first form panel 6. According to an advantageous variant, it can be envisaged to pass through the hole 6.sub.1 and the insulation panel 4 a needle opening on the side of the outer face 4.sub.2 of the insulation panel 4 so as to locate the axis of a hole 6.sub.1 of the first form panel 6. The tubular spacer 26 is then threaded on the end of the needle protruding from the outer face 4.sub.2 of the insulation panel 4 to come, through its downstream end, into contact with the insulation panel 4. The rotation of the tubular spacer 26 leads to its penetration thanks to the sharp elements 28 inside the insulation panel 4. After passing through the insulation panel 4, the tubular spacer 26 abuts, through its downstream end 26.sub.1, against the inner face of the first form panel 6. In this position, after removal of the pre-positioning needle, a tightening rod is threaded through the hole 6.sub.1 of the first form panel 6 and of the bore 27 of the tubular spacer 26 thus getting rid of the sprue of the insulation panel 4 manufactured by the tubular spacer 26.

(50) The method according to the invention then consists in placing the second form panel 7 to bear on the upstream end 26.sub.2 of the tubular spacer 26 (FIG. 6E). During this operation, a tightening rod is engaged inside a passage hole 7.sub.1 arranged in the second form panel 7. In this position, the tightening rod completely passes through the form panels 6, 7 and the insulation panel 4 by extending on either side of the form panels 6, 7. The tightening rod is then used for the mounting of tightening members such as nuts, making it possible to ensure blocking in position the form panels 6, 7 together. It should be noted that during this operation, the tightening of the nuts allows ensuring a localized deformation of the downstream 26.sub.1 and upstream 26.sub.2 ends of the tubular spacer 26 so as to ensure a sealing between this tubular spacer 26 and the form panels 6, 7.

(51) Insofar as the internal framework and the outer framework are manufactured, it is possible to consider the concreting operation aimed at ensuring the simultaneous or substantially simultaneous injection of the concrete between the insulation panel 4 and the form panels 6, 7 in order to simultaneously or substantially simultaneously manufacture the walls 2 and 3 (FIGS. 6F and 6G). The concrete can be poured either from the upper portion of the form panels or preferably from the lower portion of the framework. For example, the injection nozzles are placed at the bottom portion of the form panels 6 and 7 placed opposite each other so as to allow the pouring of the concrete from the bottom portion of the form panels. Taking into account the placing of the positioning systems 8, the insulation panel 4 and the reinforcements 5.sub.1 and 5.sub.2 remain in place during the pouring of the concrete. Particularly, the insulation panel 4 and the reinforcements 5.sub.1 and 5.sub.2 are not lifted during the operation of simultaneous pouring of concrete between the form panels 6, 7 and the insulation panel 4.

(52) After solidification of the concrete, the method according to the invention then consists in removing the tightening rod by loosening the tightening members and in removing the form panels 6, 7. It should be noted that in the case where the tubular spacers 26 are provided with rings removable at their ends, these removable rings are removed so that the tubular spacers which remain in place are no longer flush with the outer faces of the walls 2, 3. The manufactured wall 1 thus incorporates the assembly devices 9 and the positioning systems 8 which, mounted independently of one another, thus ensure in combination a mechanical retention of the second wall 3 relative to the first wall 2. The wall thus built has good mechanical resistance characteristics.

(53) In the exemplary embodiment illustrated in FIGS. 6A to 6F and detailed above, the positioning system is placed so that the first end 12.sub.1 of the rod bears against the inner face of the first form panel 6, and the second end 12.sub.2 of the rod bears against the inner face of the second form panel 7. This embodiment is not limiting, and the positioning system can also be placed so as the first end 12.sub.1 of the rod bears against the inner face of the second form panel 7, and the second end 12.sub.2 of the rod bears against the inner face of the first form panel 7.

(54) The method according to the invention thus allows manufacturing, relatively easily in situ, a sandwich wall directly integrating the thermal insulation between two concrete walls manufactured simultaneously.

(55) In the description above, the positioning systems 8 are made of plastic material such as polymer. According to this variant, the dagger 10 and the lock 11 are manufactured by molding. Similarly, the tubular spacer 26 is made of plastic material such as polymer.

(56) The invention is not limited to the examples described and represented since various modifications can be made thereto without departing from its scope.