Vegetated wall with integrated formwork and manufacturing process for such a wall

Abstract

A vegetated wall (1) with integrated formwork, comprising a load-bearing system (6), at least partially within an internal volume (4) of the wall, so as to separate it into a first zone (41) and a second zone (42), each of said zones (41, 42) being intended to contain at least part of the substrate (S), the structural element (60) comprising at least one through opening (61) providing fluidic communication between the first zone (41) and the second zone (42). Figure for the abbreviation: Figure 1

Description

Title of the invention: Wall with integrated green formwork and method for manufacturing such a wall FIELD OF THE INVENTION

[0001] The present invention relates to the field of construction, and more precisely to the field of walls with integrated formwork (MCI), prefabricated in a factory before being transported and put in place on a site for the construction of any type of building for private or public use, for example for housing, shops or professional premises, or even a decorative work or a work to combat noise and / or pollution.

[0002] More specifically, the invention relates to a wall with integrated green formwork. TECHNOLOGICAL BACKGROUND

[0003] In the building sector, it is known to prefabricate walls with integrated formwork in the factory. Such a wall comprises in particular a first skin intended to be oriented towards the exterior of the building, a second skin intended to be oriented towards the interior of the building, and means of connection between the two skins. The two skins are generally made of concrete. The second skin in particular may be a layer of concrete facing or an insulating material of the EPS type.

[0004] Such a wall is prefabricated in a factory, from poured concrete, and then it is transported to the site of its installation using a transport vehicle specially equipped to load and unload the wall, and also to keep it stable during transport.

[0005] Once installed on site, the integrated formwork wall becomes an integral part of a building. Concrete is then poured to fill the space between the two skins. Document EPI690993 describes an example of such an integrated formwork wall.

[0006] Concrete skins, and more particularly the outer skin, contribute to semi-generalising the building environment. However, urban environments today are highly mineralised environments, particularly due to the nature of the floor coverings, for example bituminous, and by the construction of buildings, which tends to create heat islands in cities, i.e. areas of heat storage which is then released, particularly at night. The temperature of these heat islands is all the higher as the population and building density is high, contributing to the discomfort and increased health problems of populations living in cities. In certain cities in France, the overheating zones can exceed 6°C.

[0007] A known solution is to bring vegetation into urban environments. This is called bio-climatization. However, the nature of the floor coverings complicates planting plants: the nature of the soil must be changed, which involves costly work and can cause problems for traffic, particularly for vehicles.

[0008] It is then known to provide structures forming supports for plants, these supports being able to be placed on a mineral surface and providing a substrate for plants. These structures thus make it possible to provide plants in addition to existing vegetation, wherever new vegetation cannot be planted, and make it possible to re-establish urban biodiversity as well as to combat air pollution.

[0009] Thus, for example, we know of tall structures which, in addition to forming a support for plants, also provide shade. We also know of green walls, which allow plants to be supported substantially vertically. An additional advantage of green walls is that they also help to provide acoustic insulation to the building.

[0010] Generally speaking, a green wall comprises an outward-facing facade which is provided with means for retaining a substrate and for revealing vegetation taking root in the substrate. The exterior facade then has openings through which the plants emerge.

[0011] Document WO2018 / 197819 describes an example for forming a green wall at using a greening system formed by a set of plates assembled on a metal frame. The plates serve as a support for plants. The greening system is then attached to a front facade of a wall

[0012] A wall with integrated formwork can also be planted. Document WO2016 / 142283 describes an example in which the wall comprises two vertical metal posts placed at the ends of the wall, and between which an inner skin and an outer skin are fixed. One of the skins, in this case the outer skin, is for example made of metal in order to provide an increased aesthetic effect. Pockets are formed in the metal skin, so that when plant substrate is poured between the two skins, the substrate emerges through the pockets. Plants growing at the pockets are then visible from the outside.

[0013] A disadvantage of this embodiment is that the wall thus formed cannot be used as a load-bearing wall of the building, because the space between the two skins, filled by the substrate, can no longer integrate a structural function. If the metal posts can fulfill such a function, it follows that the length of the wall is necessarily limited. In addition, if several of these green walls are arranged adjacent to each other, the management of the substrate, and in particular its irrigation, must be implemented wall by wall, which makes it complex and expensive.

[0014] There is therefore a need for a new wall with integrated formwork which overcomes in particular the aforementioned drawbacks.

[0015] A first object of the invention is to propose a wall with integrated green formwork with a load-bearing function.

[0016] A second object of the invention is to propose a wall with integrated formwork which facilitates the management of the substrate.

[0017] A third object of the invention is to propose a wall with integrated formwork offering acoustic and / or thermal insulation.

[0018] A fourth object of the invention is to propose a wall with integrated formwork which does not increase or only slightly increases the manufacturing and transport costs.

[0019] A fifth object of the invention is to propose an integrated formwork wall with an aesthetic appearance. Summary of the invention

[0020] Thus, according to a first aspect, the invention relates to a wall with integrated green formwork comprising: • a first skin which includes at least one primary through opening; • a second skin which is positioned, in a transverse direction, at a determined distance from the first skin; • an internal volume defined between the first skin and the second skin into which the at least one primary through opening opens and which is intended to contain at least in part a substrate suitable for growing plants; • a connection system which is configured to connect the first skin and the second skin.

[0021] The wall comprises in particular a so-called load-bearing system. Said load-bearing system comprises at least one structural element extending in a vertical direction perpendicular to the transverse direction, and placed at least partly in the internal volume of the wall so as to separate it into a first zone and a second zone. Each of said zones is intended to contain at least partly said substrate. The structural element comprises at least one through-reservation putting the first zone into fluid communication with the second zone.

[0022] Thanks to these arrangements, the wall can have a load-bearing function while ensuring continuity between the first zone and the first, to facilitate irrigation and / or the supply of nutrients in each of the zones.

[0023] According to different aspects, it is possible to provide one and / or the other of the characteristics below taken alone or in combination.

[0024] According to one embodiment, at least one structural element of the supporting system may be a concrete column. Alternatively or in combination, at least one structural element of the supporting system may be a metal profile.

[0025] According to one embodiment, the at least one structural element may comprise at least at least a first portion embedded in the first skin or at least a second portion embedded in the second skin.

[0026] According to one embodiment, the at least one structural element may comprise at least a first portion embedded in the first skin and at least a second portion embedded in the second skin. Said structural element may then form part of the connection system.

[0027] According to one embodiment, the second skin may be formed at least in part by a panel made of thermal and / or acoustic insulating material. In addition, said panel may comprise at least one stiffening element placed in the thickness of the panel, i.e. in contact with the internal face or in contact with the external face or in the thickness away from the internal face and the external face.

[0028] According to one embodiment, the wall may comprise an irrigation system intended to supply water and / or nutrients to said substrate in the first zone and the second zone of the internal volume of the wall through the at least one through-hole.

[0029] According to one embodiment, the irrigation system may comprise a porous material extending into the through-hole.

[0030] According to one embodiment, the porous material may be the substrate.

[0031] According to one embodiment, the irrigation system may comprise a pipe comprising an inlet intended to be connected to a water and / or nutrient source, and which extends at least partly into the first zone and partly into the second zone through the through-reservation.

[0032] According to a second aspect, the invention relates to a method of manufacturing an integrated formwork wall as presented above. The method then comprises: • a first positioning step which consists of positioning, inside a first mold, at least one formwork means which is configured to define one of the first skin or the second skin; • a first casting step which consists of casting, inside the first mold, a hydraulic mixture which is intended to constitute one of the first skin or the second skin; • a first positioning step which consists of positioning the connection means, this inside the first mold and so that a part of said connection system is submerged inside the hydraulic mixture; • a first hardening step which consists of leaving or hardening the hydraulic mixture contained in the first mold, in order to obtain one of the first skin or the second skin; • a second casting stage which consists of casting, in a second mold, a hydraulic mixture intended to constitute the other of the first skin or the second skin; • a turning step which consists of turning over an assembly which comprises at least one of the first skin or the second skin the connection system; • a fourth positioning step which consists of positioning the connection system inside the hydraulic mixture contained in the second mold; • a second hardening stage which consists of making or allowing to harden the hydraulic mixture contained in the second mold, in order to obtain the other of the first skin or the second skin.

[0033] At least one structural element of the supporting system may be a vertical column made of a hydraulic binder-based material associated with a metal reinforcement. In addition, after the first casting step before the first curing step, the method may comprise a first implantation step which consists of implanting one of a first portion or a second portion of the reinforcement inside the hydraulic mixture contained in the first mold and positioning a column formwork which is configured to define the column inside the hydraulic mixture contained in the first mold.

[0034] According to one embodiment, the method may further comprise, after the second casting step and before the second hardening step, a second implantation step which consists of implanting the other of the first portion or the second portion of the reinforcement inside the hydraulic mixture contained in the second mold.

[0035] According to a third aspect, the invention relates to a method of manufacturing an integrated formwork wall as presented above, said method comprising: • a first positioning step which consists of positioning, inside a first mold, at least one formwork means which is configured to define one of the first skin or the second skin; • a first casting step which consists of casting, inside the first mold, a hydraulic mixture which is intended to constitute one of the first skin or the second skin; • a first positioning step which consists of positioning the connection means, this inside the first mold and so that a part of said connection system is submerged inside the hydraulic mixture; • a first hardening stage which consists of leaving or hardening the hydraulic mixture contained in the first mold, in order to obtain one of the first skin or the second skin; • a second casting step which consists of casting, into a second mold, a hydraulic mixture intended to constitute the other of the first skin or the second skin; • a turning step which consists of turning over an assembly which comprises at least one of the first skin or the second skin the connection system; • a fourth positioning step which consists of positioning the connection system inside the hydraulic mixture contained in the second mold; • a second hardening stage which consists of making or allowing to harden the hydraulic mixture contained in the second mold, in order to obtain the other of the first skin or the second skin.

[0036] At least one structural element of the carrier system is a metal profile. In addition, the method comprises, after the first casting step and before the first hardening step, a first implantation step which consists of implanting one of the first portion or the second portion of the profile inside the hydraulic mixture contained in the first mold.

[0037] According to one embodiment, the method may further comprise, after the second casting step and before the second hardening step, a second implantation step which consists of implanting the other of the first portion or the second portion of the profile inside the hydraulic mixture contained in the second mold.

[0038] According to a fourth aspect, the invention relates to a method of manufacturing an integrated formwork wall as presented above. The method comprises: • A step of obtaining a panel comprising at least one stiffening element and which is intended to form the second skin; • a first positioning step which consists of positioning, inside a first mold, at least one formwork means which is configured to define the first skin; • a first casting stage which consists of pouring, inside the first mold, a hydraulic mixture which is intended to constitute the first skin; • a second positioning step which consists of positioning the connection system in the stiffening element of the panel which is intended to form the second skin, and holding the panel on the connection system; • a third positioning step, which consists of positioning the connection system inside the hydraulic mixture contained in the first mold ; • a first hardening stage, which consists of making or allowing to harden the hydraulic mixture contained in said first mold, in order to obtain the first skin, • a second step of engaging the connection system with said stiffening element to fix the connection system to the panel.

[0039] At least one structural element of the supporting system is a vertical column made of a hydraulic binder-based material associated with a metal reinforcement, and in that it comprises, after the first casting step and before the first hardening step, a first implantation step which consists of implanting one of a first portion of the reinforcement inside the hydraulic mixture contained in the first mold and positioning a column formwork, which is configured to define the column, inside the hydraulic mixture contained in the first mold. Brief description of the drawings

[0040] Embodiments of the invention will be described below with reference to the drawings, briefly described below:

[0041] [Fig. 1] represents a horizontal section of an integrated formwork wall comprising a load-bearing system, according to one embodiment.

[0042] [Fig.2] represents a vertical section at the right of the substrate at the level of reservations in the carrier system of [Fig.l].

[0043] [Fig.3] represents a horizontal section of an integrated formwork wall comprising a load-bearing system, according to another embodiment.

[0044] [Fig.4] represents a partial three-dimensional view of a structural element of the carrier system of [Fig.3].

[0045] [Fig.5] represents a horizontal section of an integrated formwork wall comprising a load-bearing system, according to another embodiment.

[0046] In the drawings, like references designate identical or similar objects. DETAILED DESCRIPTION

[0047] The present invention finds a particular application in the field of construction and, more particularly, in that of the manufacture, in a factory, of walls with integrated formwork intended to be installed on a construction site for the construction of a building such as a block of flats, a decorative work or a work to combat noise and / or pollution.

[0048] The invention relates more specifically to a wall 1 with integrated formwork (ICF) called vegetated, that is to say that the wall is intended to have plants such as plants or shrubs on at least one of its faces. In this the wall with integrated formwork vegetated is designated as “wall 1” for the purposes of clarity and simplification.

[0049] Such a wall 1 is also called a “prefabricated wall” because it is partly manufactured in a factory, transported to the site, then installed on the site to form the wall 1 itself.

[0050] In the following, a vertical direction is designated, which is taken with reference to the direction of erection of the wall 1. The vertical direction of the wall can be confused with the natural vertical direction, as shown in the figures, that is to say taken with reference to the ground of the construction site on which the wall 1 is intended to be installed. It is however understood that the vertical direction of the wall 1 can be inclined relative to the vertical direction without this having any impact on the invention.

[0051] A horizontal plane is also designated, substantially orthogonal to the vertical direction of the wall 1, the horizontal plane comprising a longitudinal direction and a transverse direction perpendicular to each other.

[0052] In the following, the vertical, longitudinal and transverse directions are considered to be substantially rectilinear, although they may admit a non-infinite radius of curvature.

[0053] The wall comprises a first skin 2, which is preferably substantially flat, but not necessarily, and which extends in the vertical direction and the longitudinal direction. The first skin 2 may be made of a hydraulic material such as concrete, as a single-piece or monolithic plate or comprise a composite material, insulating or non-insulating.

[0054] The first skin 2 comprises at least one primary through opening 20, i.e. one which extends from a first face 21 called the external face of the first skin 2 until it opens onto a second face 22 called the internal face of the second skin 2. In practice, the first skin 2 comprises a plurality of primary openings 20 distributed along the vertical and longitudinal directions. As will be explained later, the primary openings 20 may have, on the same external face 21, different shapes and dimensions.

[0055] The wall 1 further comprises a second skin 3, which is also preferably substantially planar, but not necessarily, and which extends in the vertical direction and the longitudinal direction. The second skin 3 is positioned, in the transverse direction, at a determined distance from the first skin 2 so as to define an internal volume 4 onto which the primary opening(s) 20 open. The distance between the first skin 2 and the second skin 3 may be constant in the vertical direction and / or the longitudinal direction, but not necessarily. The second skin 3 may also be made of a hydraulic material such as concrete, as a single-piece or monolithic plate or comprise a composite material, insulating or non-insulating.

[0056] The second skin 3 also comprises a first face 31 called external, oriented outside the volume 4, and a second face 32 called internal, oriented towards the inside of the volume 4, and facing the internal face 22 of the first skin 2.

[0057] Optionally, the second skin 3 may also comprise one or more through openings 30 called secondary openings, that is to say which extend from the external face 31 until they open onto the internal face 32.

[0058] The wall 1 further comprises a connection system 5 for connecting the first skin 2 to the second skin 3, i.e. in such a way as to fix their position relative to one another. Generally speaking, the connection means 5 comprises a part embedded in the material of the first skin 2, and a portion embedded in the material of the second skin 3, so that the connection means 5 is rigidly fixed to the first skin 2 and to the second skin 3. The connection system 5 will be explained later.

[0059] The wall 1 further comprises a substrate S suitable for growing plants. This is in particular organic matter, for example soil, possibly mixed with mineral aggregates to provide grip for the roots of the plants. The substrate S is placed in at least part of the internal volume 4. Preferably, the substrate S at least partially fills the internal volume 4 so as to cover each primary opening 20, and where appropriate each secondary opening 30. In other words, the substrate S is visible and / or accessible through the primary openings 20, and where appropriate the secondary openings 30, from the outside of the wall 1.

[0060] The wall 1 may be intended to be erected so that the outer face 21 of the first skin 2 faces the outside of the building, while the outer face 31 of the second skin faces the inside of the building. Conversely, the wall 1 may be intended to be erected so that the outer face 21 of the first skin 2 faces the inside of the building, while the outer face 31 of the second skin faces the outside of the building.

[0061] The wall 1 according to the invention is intended to be a load-bearing wall of the building, that is to say it is intended to provide a structural function such as supporting the weight of at least part of the structure of the building, for example the frame and / or the floors of the building, in order to transfer it to the foundations of the building. It thus contributes to the stability and structural resistance of the entire building.

[0062] For this purpose, the wall 1 comprises a so-called load-bearing system 6 formed by at least one structural element 60. The structural element 60 extends at least partly in the vertical direction, and it is placed at least partly in the internal volume 4 of the wall 1. By “extends at least partly in the vertical direction”, here is meant the property of the structural element 60 to have a dimension in a direction of extension which is greater than the other two, said direction of extension comprising at least one component along the vertical direction. Preferably, the direction of extension coincides or substantially coincides with the vertical direction. The transverse dimension of the structural element 60 is greater than the transverse dimension of the internal volume 4, so that the structural element 60 comprises at least one portion embedded in one of the first skin 2 or the second skin 3. The structural element 60 then separates the internal volume 4 along the longitudinal direction into a first zone 41 and a second zone 42. The first zone 41 and the second zone 42 each contain said substrate S.

[0063] The supporting system 6 may comprise a plurality of structural elements 60 spaced along the longitudinal direction in the internal volume 4 of the wall 1, so as to form a plurality of zones 41, 42.

[0064] The carrier system 6 may further comprise one or more longitudinal structural elements connecting two vertical structural elements 60, so as to form a gantry.

[0065] The wall 1 can thus include a load-bearing function for the building. However, the separation of the internal volume 4 into several zones 41, 42 complicates the irrigation of the substrate S in each zone 41, 4L

[0066] According to the invention, the structural element 60 then comprises at least one longitudinally traversing reservation 61 putting the first zone 41 into communication with the second zone 42. The communication formed by the reservation 61 is preferably of the fluidic type, that is to say that it allows the passage of a fluid, aeraulic, hydraulic or other, between the first zone 41 and the second zone 42. In other words, the reservation 61 comprises an end opening into the first zone 41 and a second end opening into the second zone 42. The traversing reservation 61 then makes it possible to use a system 7 for irrigating the substrate S to supply water and / or nutrients passing through the traversing reservation to supply water and / or nutrients from the first zone 41 to the second zone 42 without having to pass through the outside of the wall 1.

[0067] More specifically, the irrigation system 7 may comprise a pipe connected to an inlet to a water and / or nutrient source, and which extends partly in the first zone 41 and partly in the second zone 42 of the internal volume 4 by passing through the structural element 60. The pipe may then comprise at least two outlets, namely an outlet in the first zone 41 and a second outlet in the zone 42 of the internal volume 4. When the wall comprises several structural elements 60, a single pipe may pass through each structural element 60 to bring water into each zone 41, 42 of the internal volume 4. The irrigation system 7 may comprise several pipes extending longitudinally in each zone 41, 42, and distributed vertically. The irrigation system 7 may alternatively comprise a single pipe arranged so as to wind through the reservations 61 of the structural elements. The irrigation system 7 may also comprise a porous material placed in at least one reservation 61 passing through at least one structural element 60. The porous material ensures the fluid passage between two zones 41, 42 for example by capillarity. For example, the porous material may be the substrate S itself, so that the reservations 61 ensure the continuity of the substrate in the internal volume 4. Thus, a water outlet is brought for example into a first zone 41 using a pipe whose inlet is connected to a source of water and / or nutrients, the water and / or nutrients being transported into the second zone 42 through the porous material.

[0068] Each structural element 60 may comprise one or more through-reservations 61 distributed along the vertical direction.

[0069] Thus, the irrigation system can, from a single source of water and / or nutrients, be entirely integrated into the wall 1.

[0070] The cross-section of a reservation 61 can be of any nature, for example square, rectangular, triangular, or even irregular. According to one embodiment, the section of a reservation is circular, suitable for example for the passage of a pipe of the irrigation system 7.

[0071] The structural element(s) 60 may be made of concrete or metal.

[0072] Preferably, each structural element 60 comprises at least one portion embedded in the first skin 2 or the second skin 3. More precisely, each structural element 60 may comprise a first portion embedded in the first skin and / or a second portion embedded in the second skin 3. The structural element 60 thus makes it possible to take up at least part of the forces exerted on the first skin 2 and / or the second skin 3.

[0073] We will now describe several examples of the construction of wall 1.

[0074] According to a first embodiment example illustrated in particular in [Fig. 1], the first skin 2 and the second skin 3 are both made of concrete. It will be noted that according to this first example, the first skin 2 defines, between its external face 21 and its face 22, a continuous space, that is to say that it does not include any discontinuity. Similarly, the second skin 3 also defines a continuous medium between its external face 31 and its internal face 32.

[0075] The first skin 2 may comprise at least one primary opening 20 defined by four edges, namely two vertical edges 23 and two longitudinal edges 24, so as to define a primary opening 20 of substantially rectangular shape, hereinafter called rectangular primary opening 20a. The rectangular primary opening 20a may be supplemented by a retaining means, not shown in [Fig.l], of the substrate S which partly covers the rectangular primary opening 20a to prevent the substrate S to escape under the effect of gravity while leaving it accessible. Such a retaining means may for example be a perforated plate or a grid, which additionally provides a grip for the plants. Another example of a retaining means may be a tray, extending projecting from the outer face 21 of the first skin. A lower longitudinal rim 24 of the rectangular primary opening 20a may also be part of such a retaining means. Such a lower longitudinal rim 24 has an inclination in the vertical direction, directed downwards from the outer face 21 towards the inner face 22 of the first skin 2. The substrate S can thus partly rest on the lower longitudinal rim 24 while being guided towards the inside of the wall 1, i.e. towards the internal volume 4.

[0076] The first skin 2 may further comprise at least one primary opening 20 defined by a rim 25 substantially of convergent truncated conical shape. More precisely, the conical rim 25 converges at least in part from the outer face 21 towards the inner face 22 of the first skin 20. Such an opening is referred to below as a convergent primary opening 20b. Such a convergent primary opening 20b makes it possible to combine the vegetation effect with an increase in sound absorption. Indeed, the substrate acts as a sound absorber. The conical shape of the convergent primary openings 20b makes it possible to increase the sound absorption coefficient of the wall 1 for sounds coming from the side of the outer face 21 of the first skin. By placing the first skin 2 on the outside of the building, the penetration of noise coming from outside the building towards the inside is reduced.

[0077] The first skin 2 may further comprise at least one primary opening 20 defined by a rim 26 substantially of divergent truncated conical shape. More precisely, the conical rim 26 diverges at least in part from the external face 21 towards the internal face 22 of the first skin 20. Such an opening is referred to below as a divergent primary opening 20c. Such a divergent primary opening 20c makes it possible to retain the substrate S and the plants inside the wall 1 without adding additional retaining means.

[0078] The second skin 3 may also comprise a secondary through opening 30, which is substantially similar to the rectangular primary opening 20a of the first skin 2 and described above. Immediately, the second skin 3 may also comprise one or more secondary openings substantially similar to the convergent primary openings 20b and / or the divergent openings 20c of the first skin 2 described above.

[0079] The connection system 5 comprises at least one connector 50 in the form of a rod, for example metallic or composite, a first end of which is embedded in the first skin 2 and the other end of which is embedded in the second skin 3, so as to maintain a fixed transverse distance between the first skin 2 and the second skin 3. A connector 50 may extend exclusively in the transverse direction, or extend in a direction comprising a transverse component and a vertical and / or longitudinal component. Alternatively or in combination, each connector 50 may be fixed to one or the other skin 2, 3 by screwing or by gluing.

[0080] According to the first example, the structural element 60 of the supporting system 6 comprises a vertical column 62 made of a hydraulic binder-based construction material associated with a metal reinforcement 63. In the following, the material of the vertical column 62 is concrete. More precisely, the metal reinforcement 63 comprises a first portion 64 taken from the first skin 2, a second portion 65 taken from the second skin 3, and an intermediate portion 66, between the first portion 64 and the second portion 65, taken from the concrete column 62. The concrete column 62 has a transverse dimension substantially equal to the transverse dimension of the internal volume 4. In other words, the column 62 transversely fills the internal volume 4.By thus extending across the first skin 2 and the second skin 3, the carrier system 6 makes it possible to associate the first skin 2 and the second skin 3 with the carrier element 60 and thus increase the mechanical strength of the carrier element 60. In addition, the carrier element 60 participates in the connection between the first skin 2 and the second skin 3, so that it forms part of the connection system 5. When the number and distribution of such structural elements 60 are sufficient, the connection system 5 can be completely merged with the structural elements 60, i.e. do without the rods 50.

[0081] According to the first example, the through reservation 61 is then made through the concrete column 62.

[0082] A second example of wall 1 will be described with reference to [Fig.3].

[0083] According to the second example, the first skin 2 and the second skin 3 are made of concrete. in the same way as the first example.

[0084] According to the second example, the first skin 2 comprises a primary opening 20 substantially identical to the rectangular primary opening 20a described in the first embodiment. The second skin 3 does not comprise any secondary openings. Without repeating the entire description given for the first example, it is clear that all of the arrangements described for the primary openings 20 and the secondary openings 30 of the first example can be repeated here.

[0085] According to the second example, the carrier system 6 comprises at least one structural element 60 which is a vertical metal profile P, for example H-shaped, comprising two substantially parallel longitudinal branches PI, P2 connected by a transverse branch P3. A first longitudinal branch PI is embedded in the first skin 2, the second longitudinal branch P2 is embedded in the second skin 3 and the transverse branch P3 crosses the entire internal volume 4.

[0086] The through-reservation 61 can then be formed in the transverse branch P3.

[0087] The metal profile P can take other shapes, for example I-shaped or tube-shaped.

[0088] The load-bearing system 6 of the first example can be combined with the load-bearing system 6 of the second example in the same wall 1, which will then comprise a load-bearing system 6 combining a structural element 60 comprising a concrete post 62 associated with a metal frame according to the first example with a structural element 60 comprising a metal profile P according to the second example.

[0089] According to a third example illustrated in [Fig. 5], the wall 1 incorporates acoustic and / or thermal insulation distinct from that possibly provided by the substrate S. The wall can then be described as a wall with integrated formwork and insulation (MCII). More precisely, according to the third example, the first skin 2 is made of concrete, in a manner identical to that described for the first example and the second example. The second skin 3 is made of a material with an additional function, for example thermal and / or acoustic insulation, and defines a continuous medium between its external face 31 and its internal face 32. According to one embodiment, the second skin 3 is made in part from a panel 33 of a material with an additional insulation function, for example thermal and / or acoustic insulation.The panel 33 is for example made at least in part of mineral wool, for example rock wool or glass wool, of vegetable wool, for example hemp wool, linen wool, cotton wool, wood wool or other. The vegetable wool can be combined with another material which reduces or even prevents its degradation, in particular its rotting, for example a hydraulic and / or synthetic binder, such as a resin. Alternatively or in combination, the panel 33 can comprise a synthetic textile and / or a geotextile, possibly again combined with a material which reduces or even prevents its degradation. Alternatively or in combination, the panel 33 can be made entirely or in part of EPS (expanded polystyrene). The panel 33 can be rigid or semi-rigid, that is to say that it does not deform or deforms little under the effect of stresses during the manufacture and / or handling of the wall 1 for its installation.

[0090] A so-called facing layer 34 may be applied opposite the external face 31 of the second skin 3. The facing layer 34 is for example made of concrete, plaster, OSB (Oriented Straight Board) panel, triply panel, MDF (Medium Density Fiberboard) or even wood-based particle board or composite panel. The facing layer 34 may receive a covering.

[0091] The first skin 2 is made of concrete, in a manner identical to the first example and the second example. It may comprise a primary opening 20 substantially identical to the rectangular primary opening 20a, and / or substantially a primary opening 20 substantially identical to the convergent primary opening 20b, and / or substantially a primary opening 20 substantially identical to the divergent primary opening 20c, as described above. The first skin 2 may further comprise one or more openings provided to form, for example, doors or windows

[0092] According to the third example, the second skin 3 is devoid of a primary opening 30. One or more openings may however be provided to form, for example, doors or windows.

[0093] The panel 33 is connected to the first skin 2 using the connection system 5 comprising at least one connector 50 in the form of a rod which comprises a first end embedded in the first skin 2 and a second end embedded in the second skin 3. More precisely, for this purpose, the panel 33 is provided with a stiffening element 35 for anchoring therein a connector 50 of the connection system 5. By anchoring, here is meant any means of fixing, in particular by screwing, by gluing or by sealing. For example, such a stiffening element 35 may comprise a notch 36 made hollow on the external face 31 of the second skin 3, and which is intended to contain a material more rigid than the material of the panel 33. Such a material is for example concrete 37 poured into the notch 36 and hardened.Alternatively, the material cast into the notch 36 is resin, or any other material that can be cast and hardened to provide adequate mechanical strength. The notch 36 is then, for example, dovetail-shaped, or any other form-locking geometry, to prevent the material placed inside from coming out. In practice, a plurality of notches 36 are made on the outer face 31 of the second skin 3 to correspond to the number of connectors 50 used to obtain the sufficiently robust connection between the first skin 2 and the second skin 3. Each notch 36 may extend longitudinally on the outer surface 31 of the second skin 3, or remain a point. The facing layer 34 then makes it possible to mask the notches 36.

[0094] Generally, the stiffening element 35 may be located at any point in the thickness of the panel 33, between the outer face 31 and the inner face 32, and including on the outer face 31 or on the inner face 32. In particular, notches similar to the notches 36 described above may be formed in hollows on the inner face 32. Alternatively, rigid elements may be placed in the thickness of the panel 33 at a distance from the outer face 31 and the inner face 32. In other words, the stiffening element 35 may be in contact with the outer face 31 or the outer face 32 or be formed in the current section.

[0095] The wall 1 may further comprise an intermediate element 9, for example forming a sealing or drainage barrier, between the internal face 32 of the second skin 3 and the internal volume 4, in order to fluidically isolate the plate 33 from the substrate S. The sealing or drainage element 9 may for example comprise a membrane, a film, a sheet or a plate. The intermediate sealing or drainage element 9 is held in position relative to the second skin 3 for example using collars with which the connectors 50 are provided, or by gluing or stapling on the panel 33.

[0096] According to the third example, the structural element 60 of the supporting system 6 may comprise a vertical concrete column 67 associated with a metal reinforcement 68. More precisely, the metal reinforcement 68 comprises a first portion 69 taken in the first skin 2, and a second portion 70 taken in the vertical column 67. The vertical concrete column 67 has a transverse dimension substantially equal to the transverse dimension of the internal volume 4. In other words, the column 67 transversely fills the internal volume 4. The supporting system 6 makes it possible to take up the forces on the first skin 2.

[0097] The carrier system 6 according to the third example may comprise, as a variant or in combination, a structural element 60 in the form of a metal profile P, a first portion PI of which is taken in the first skin 2, and which comes into contact with the internal face 32 of the second skin or, where appropriate, with the intermediate element 9.

[0098] The wall according to the third example makes it possible, in particular thanks to the presence of the thermal insulation panel 33 and the presence of the substrate S in the internal volume 4, to limit the impacts on the wall 1 caused by temperature differentials between one side and the other of the wall 1, in this case between the interior and the exterior of the building, or of a room of a building, delimited in part by the wall 1.

[0099] It will be observed that the arrangements of the three examples described above are not exclusive to each example, and can be combined with each other in the same wall 1.

[0100] The invention also relates to a method for manufacturing a wall 1 as presented above. According to the invention, the method for manufacturing the wall 1 is carried out at least partly in a factory, so that the wall 1 is brought prefabricated to the construction site before being finalized.

[0101] According to a first embodiment, the method of manufacturing the wall 1 may comprise: • a first positioning step which consists of positioning, inside a first mold, at least one formwork means which is configured to define the first skin 2 as well as, where appropriate, at least a part of a primary through opening 20; • a first casting stage which consists of casting, inside the first mold, a hydraulic mixture, for example concrete, which is intended to constitute the first skin 2; • a second positioning step which consists of positioning the connection system 5, this inside the first mold and so that a part of said connection system 5 is embedded inside the hydraulic mixture which is intended to constitute the first skin 2; • a first hardening stage which consists of leaving or causing to harden (in particular by heating and / or inside an oven) the hydraulic mixture contained in the mold, in order to obtain the first skin 2; • a third positioning step which consists of positioning, inside a second mold, at least one formwork means which is configured to define the second skin 3 as well as, where appropriate, at least a part of a secondary through opening 30; • a second casting stage which consists of casting, into the second mold, a hydraulic mixture, for example concrete, intended to constitute the second skin 3; • a turning step which consists of turning over an assembly which comprises at least the first skin 2 and the connection system 5; • a fourth positioning step which consists of positioning, for example in particular drowning, the connection system 5, more particularly another part of the connection system 5, inside the hydraulic mixture contained in said second mold; • a second hardening step which consists of making or allowing to harden (in particular by heating and / or inside an oven) the hydraulic mixture contained in said second mold, in order to obtain the second skin 3.

[0102] These steps make it possible in particular to obtain a wall 1 comprising a first skin 2 and a second skin 3 conforming to the first and second examples of embodiment of a wall 1 described above.

[0103] The turning step and the fourth positioning step are preferably carried out successively, directly after each other, using the same handling machine.

[0104] The first positioning step followed by the first casting step can be carried out simultaneously with the second positioning step followed by the second casting step, taking care that the hydraulic mixture in the second mold has not yet hardened for the fourth positioning step.

[0105] In order to produce the wall 1 according to the first example and give it a load-bearing function, the manufacturing method further comprises, after the first step of casting and before the first hardening step, a first implantation step, which consists of implanting the reinforcement 63, and more particularly the first portion 64 of the reinforcement 63 and positioning a column formwork which is configured to define the column 62 inside the hydraulic mixture contained in the first mold. Such formwork for the column 62 can be made using OSB (Oriented Straight Board) panels, perforated sheets or expanded metal of the Nerlat or Nergalto type, wooden panels or any other biodegradable material. Such formwork can provide for the formation of at least one through-hole 61, for example using sleeves made of biodegradable material.The method further comprises, after the turning step and before the second hardening step, a second implantation step, which consists of implanting the reinforcement 63 and more precisely the second portion 65 of the reinforcement 63, inside the hydraulic mixture contained in the second mold, to position the column formwork in the second mold.

[0106] The prefabricated wall thus obtained is transported to the construction site and installed on a base, which rests directly or indirectly on the ground, so that the vertical direction of the wall substantially coincides with the natural vertical direction. If necessary, if such arrangements have not already been put in place, arrangements for forming the through-holes 61 in the column 62 are implemented. The material for the column 62 is then poured inside the column formwork, trapping the intermediate portion 66 of the metal reinforcement. The column 62 then comprises, for example, a portion extending below the surface of the base, and preferably below the surface of the ground, to be secured to and partially integrated into the foundations. The column formwork can remain in place or be removed.The irrigation system 7 is then installed, and the internal volume 4 can be filled in part or in full, excluding the space taken by the column 62 with substrate S.

[0107] In order to produce a wall 1 according to the second example and to give it a load-bearing function, the manufacturing method further comprises, after the first casting step and before the first hardening step, a first step of implantation of the vertical metal profile P, which consists of implanting a first portion of the metal profile P, for example the first longitudinal branch PI, inside the hydraulic mixture contained in the first mold. The method further comprises, after the turning step and before the second hardening step, a second implantation step, which consists of implanting a second portion of the metal profile P, for example the second longitudinal branch P, inside the hydraulic mixture contained in the second mold. The metal profile P to comprise one or more through-reservations 61 formed before the first implantation step.

[0108] The wall thus obtained is transported to the construction site and installed on a base, which rests directly or indirectly on the ground, so that the vertical direction of the wall substantially coincides with the natural vertical direction. Where appropriate, if such arrangements have not already been put in place, arrangements for forming the through-reservations 61 in the metal P-profile are implemented. The metal P-profile emerges vertically beyond the first skin 2 and the second skin 3, downwards, to be secured to foundations for example by a casing or sealing system. The irrigation system 7 is then installed, and the internal volume 4 can be filled in part or completely, excluding the space taken by the metal P-profile, with substrate S. More precisely, each zone 41, 42 is filled in part or completely with the substrate S.

[0109] The manufacturing method thus described involves the formation of the first skin 2 before the second skin 3. However, the second skin 3 may be formed before the first skin 2. Thus, according to a second embodiment, the manufacturing method of the wall 1 may comprise: • a first positioning step which consists of positioning, inside a first mold, at least one formwork means which is configured to define the second skin 3 as well as, where appropriate, at least a part of a secondary through opening 30; • a first casting step which consists of casting, inside the first mold, a hydraulic mixture which is intended to constitute the second skin 3; • a second positioning step which consists of positioning the connection system 5, this inside the first mold and so that a part of said connection system 5 is embedded inside the hydraulic mixture which is intended to constitute the second skin 3; • a first hardening stage which consists of leaving or causing to harden (in particular by heating and / or inside an oven) the hydraulic mixture contained in the mold, in order to obtain the second skin 3; • a third positioning step which consists of positioning, inside a second mold, at least one formwork means which is configured to define the first skin 2 as well as, where appropriate, at least a part of a primary through opening 20; • a second casting step which consists of casting, into the second mold, a hydraulic mixture intended to constitute the first skin 2; • a turning step which consists of turning over an assembly which comprises at least the second skin 3 and the connection system 5; • a fourth positioning step which consists of positioning, by example in particular to drown, the connection system 5, more particularly another part of the connection system 5, inside the hydraulic mixture contained in said second mold; • a second hardening step which consists of making or allowing to harden (in particular by heating and / or inside an oven) the hydraulic mixture contained in said second mold, in order to obtain the first skin 2.

[0110] These steps make it possible in particular to obtain a wall 1 comprising a first skin 2 and a second skin 3 conforming to the first and second examples of embodiment of a wall 1 described above. Without repeating the entire description for obtaining the wall 1 according to the first example and for obtaining the wall 1 according to the second example, it is immediate that the concrete column 62 and / or the metal profile P can be installed during the manufacturing process by adapting the steps to the order of formation of the first skin 2 and the second skin 3.

[0111] According to a third embodiment, the method of manufacturing the wall 1 may comprise: • A step of obtaining a panel 33 comprising at least one stiffening element 35, and which is intended to form the second skin 3; • a first positioning step which consists of positioning, inside a first mold, at least one formwork means which is configured to define the first skin 2 as well as, where appropriate, at least a part of a primary through opening 20; • a first casting step which consists of casting, inside the first mold, a hydraulic mixture, for example concrete, which is intended to constitute the first skin 2; • a second positioning step which consists of positioning the connection system 5 in the stiffening element (35) of the panel 33 which is intended to form the second skin 3, and of holding the panel 33 on the connection system 5, • a third positioning step, which consists of positioning, for example drowning, the connection system 5 inside the hydraulic mixture contained in the first mold; • a first hardening step, which consists of hardening or allowing to harden (in particular by heating and / or inside an oven) the hydraulic mixture contained in said first mold, in order to obtain the first skin 2; • a step of engaging the connection system 5 with said stiffening element 35 to fix the connection system 5 to the panel 33.

[0112] The first curing step and the second curing step may be carried out simultaneously. The first curing step may be carried out successively directly after the third positioning step, before the second casting step.

[0113] The stiffening element 35 is for example a notch 36 on the external face 31 of the panel 33 forming the second skin 3. In this case, the method may comprise a second casting step which consists of casting a material, for example a hydraulic material or resin, into the notch 36. This second casting step then occurs after the second positioning step, and before the engagement step. Furthermore, in this case, the engagement step consists of hardening or allowing to harden (in particular by heating and / or inside an oven), the material cast in the notch 36 of the panel 33. The engagement step is carried out after the second positioning step, and may be carried out simultaneously with the first hardening step.

[0114] The second positioning step may consist of the installation of rings which are attached by elastic deformations to all or part of the rods 50 of the connection system 5 and block the position of the panel 33 along the rods 50.

[0115] These steps make it possible in particular to obtain a wall 1 comprising a first skin 2 and a second skin 3 conforming to the third example embodiment of a wall 1 described above. Where appropriate, the method comprises a step of placing the sealing element 9, for example by securing it to the panel 33 before the third positioning step, and preferably before the second positioning step.

[0116] In order to produce the wall 1 according to the third example and to give it a load-bearing function, the manufacturing method further comprises, after the first casting step and before the first hardening step, an implantation step which consists of implanting the metal reinforcement 68, and more precisely the first portion 69 of the reinforcement 68, and positioning a column formwork which is configured to define the column 67 inside the hydraulic mixture contained in the first mold. Such a formwork for the column 67 can be produced using OSB (Oriented Straight Board) panels, perforated sheets or expanded metal of the Nerlat or Nergalto type, wooden panels or any other biodegradable material. Such a formwork can provide for the formation of at least one through-hole 61, for example using sleeves made of biodegradable material. For example, the implantation step can be implemented before the third positioning step.

[0117] Immediately, the manufacturing method of the third embodiment example can be adapted when the structural element 60 is a metal profile P, a portion PI of which is embedded in the first skin 2.

[0118] The prefabricated wall thus obtained is transported to the construction site and installed on a base, which rests directly or indirectly on the ground, so that the vertical direction of the wall substantially coincides with the natural vertical direction. If necessary, if such arrangements have not already been put in place, arrangements for forming the through-reservations 61 in the column 67 are implemented. The material for the column 67 is then poured inside the column formwork, trapping the second portion 70 of the metal reinforcement 68. The column 67 then comprises, for example, a portion extending below the surface of the base, and preferably below the surface of the ground, to be secured to and partially integrated into the foundations. The column formwork can remain in place or be removed.The irrigation system 7 is then installed, and the internal volume 4 can be filled in part or in full, excluding the space taken up by the column 67, with substrate S. More precisely, each zone 41, 42 is filled in part or in full with the substrate S.

[0119] The manufacturing method may also comprise a step of placing a facing which consists of placing a facing layer 34 on the wall 1, and for example of placing a facing layer 34 opposite the external face 31 of the second skin 3. Such a step is particularly suitable for the wall 1 according to the third exemplary embodiment, in order to mask the notches 36. The facing layer 34 may be placed in the factory or on the construction site.

[0120] The wall 1 thus formed advantageously makes it possible to provide a wall combining the functions of a green wall and a load-bearing wall. It is thus possible to create all the walls of a building, whether load-bearing or non-load-bearing, as green walls. The building can then, for example, have vegetation on its entire exterior facade, improving the greening in an urban environment.

[0121] The system 7 for irrigating the substrate S remains simple and inexpensive. The manufacturing process involves techniques that are implemented with equipment that already exists, so that the construction of this type of wall remains economically accessible and does not increase the costs of constructing the building.

[0122] The wall 1 also provides acoustic insulation thanks to the presence of the substrate S, possibly combined with converging primary openings 20b, in order to improve acoustic comfort inside the building.

[0123] The wall 1 also makes it possible to introduce one or more additional functions therein thanks to the second skin 3, in particular when the wall 1 is produced according to the third embodiment using the panel 33 which can confer one or more additional functions to the wall 1, for example a thermal and / or acoustic insulation function.

[0124] By placing the load-bearing system 6 inside the internal volume 4, the thickness of the wall 1 according to the invention remains similar to that of the walls which are only vegetated. or only carriers.

Claims

Claims

1. Wall (1) with integrated vegetated formwork comprising: • a first skin (2) which comprises at least one primary through opening (20, 20a, 20b, 20c); • a second skin (3) which is positioned, in a transverse direction, at a determined distance from the first skin (2); • an internal volume (4) defined between the first skin (2) and the second skin (3) onto which the at least one primary through opening (20, 20a, 20b, 20c) opens and which is intended to contain at least in part a substrate (S) suitable for growing plants; • a connection system (5) which is configured to connect the first skin (2) and the second skin (3);The wall (1) being characterized in that it comprises a system (6) called a carrier, said carrier system (6) comprising at least one structural element (60) extending in a vertical direction perpendicular to the transverse direction, and placed at least partly in the internal volume (4) of the wall so as to separate it into a first zone (41) and a second zone (42), each of said zones (41, 42) being intended to contain at least partly said substrate (S), the structural element (60) comprising at least one through-reservation (61) putting the first zone (41) into fluid communication with the second zone (42).;

2. Wall (1) with integrated formwork according to claim 1, in which at least one structural element (60) of the load-bearing system (6) is a concrete column (62, 67).

3. Integrated formwork wall according to claim 1 or claim 2, wherein at least one structural element (60) of the load-bearing system (6) is a metal profile (P).

4. Wall (1) with integrated formwork according to any one of the preceding claims, in which the at least one structural element (60) comprises at least a first portion (64, 68, P1) embedded in the first skin (2) or at least a second portion (65, P2) embedded in the second skin (3).

5. Wall (1) with integrated formwork according to the preceding claim, in which the at least one structural element (60) comprises at least a first portion (64, 68, PI) embedded in the first skin (2) and at least a second portion (65, P2) embedded in the second skin (3), said structural element (60) forming part of the connection system (5).

6. Wall (1) with integrated formwork according to any one of the preceding claims, in which the second skin (3) is formed at least in part by a panel (33) of thermal and / or acoustic insulating material and in which said panel (33) comprises at least one stiffening element (35) placed in the thickness of the panel (33).

7. Wall (1) with integrated formwork according to any one of the preceding claims, comprising an irrigation system (7) intended to supply water and / or nutrients to said substrate (S) in the first zone (41) and the second zone (42) of the internal volume (4) of the wall (1) through the at least one through-reservation (61).

8. Wall (1) with integrated formwork according to the preceding claim, in which the irrigation system (7) comprises a porous material extending into the through-reservation (61).

9. Wall (1) with integrated formwork according to the preceding claim, in which the porous material is the substrate.

10. Wall (1) with integrated formwork according to any one of claims 7 to 9, in which the irrigation system (7) comprises a pipe comprising an inlet intended to be connected to a source of water and / or nutrients, and which extends at least partly in the first zone (41) and partly in the second zone (42) through the through reservation (61).

11. A method of manufacturing an integrated formwork wall according to any one of the preceding claims, said method comprising: • a first positioning step which consists of positioning, inside a first mold, at least one formwork means which is configured to define one of the first skin (2) or the second skin (3); • a first casting step which consists of casting, inside the first mold, a hydraulic mixture which is intended to constitute one of the first skin (2) or the second skin (3); • a first positioning step which consists of pos- positioning the connection means, this inside the first mold and so that a part of said connection system (5) is submerged inside the hydraulic mixture; • a first hardening step which consists of leaving or hardening the hydraulic mixture contained in the first mold, in order to obtain one of the first skin (2) or the second skin (3); • a second casting step which consists of casting, into a second mold, a hydraulic mixture intended to constitute the other of the first skin (2) or the second skin (3); • a turning step which consists of turning over an assembly which comprises at least one of the first skin (2) or the second skin (3) the connection system (5); • a fourth positioning step which consists of positioning the connection system (5) inside the hydraulic mixture contained in the second mold; • a second hardening step which consists of making or allowing to harden the hydraulic mixture contained in the second mold, in order to obtain the other of the first skin (2) or the second skin (3), the method being characterized in that at least one structural element (60) of the supporting system (6) is a vertical column (62) made of hydraulic binder-based material associated with a metal reinforcement (63), and in that it comprises, after the first casting step before the first hardening step, a first implantation step which consists of implanting one of a first portion (64) or a second portion (65) of the reinforcement (63) inside the hydraulic mixture contained in the first mold and positioning a column formwork which is configured to define the column (62) inside the hydraulic mixture contained in the first mold.

12. Method according to the preceding claim, further comprising, after the second casting step and before the second hardening step, a second implantation step which consists of implanting the other of the first portion (64) or the second portion (65) of the reinforcement (63) inside the hydraulic mixture contained in the second mold.

13. Method of manufacturing an integrated formwork wall according to one of any of claims 1 to 10, said method comprising: • a first positioning step which consists of positioning, inside a first mold, at least one formwork means which is configured to define one of the first skin (2) or the second skin (3); • a first casting step which consists of casting, inside the first mold, a hydraulic mixture which is intended to constitute one of the first skin (2) or the second skin (3); • a first positioning step which consists of positioning the connection means, this inside the first mold and so that a part of said connection system (5) is embedded inside the hydraulic mixture; • a first hardening step which consists of leaving or hardening the hydraulic mixture contained in the first mold, in order to obtain one of the first skin (2) or the second skin (3); • a second casting step which consists of casting, into a second mold, a hydraulic mixture intended to constitute the other of the first skin (2) or the second skin (3); • a turning step which consists of turning over an assembly which comprises at least one of the first skin (2) or the second skin (3) the connection system (5); • a fourth positioning step which consists of positioning the connection system (5) inside the hydraulic mixture contained in the second mold; • a second hardening step which consists of making or allowing to harden the hydraulic mixture contained in the second mold, in order to obtain the other of the first skin (2) or the second skin (3), the method being characterized in that at least one structural element (60) of the carrier system (6) is a metal profile (P) and in that it comprises, after the first casting step and before the first hardening step, a first implantation step which consists of implanting one of the first portion (PI) or the second portion (P2) of the profile (P) inside the hydraulic mixture contained in the first mold.

14. Manufacturing method according to the preceding claim, further comprising, after the second casting step and before the second hardening step, a second implantation step which consists of implanting the other of the first portion (PI) or the second portion (P2) of the profile (P) inside the hydraulic mixture contained in the second mold.

15. A method of manufacturing an integrated formwork wall according to any one of claims 1 to 10, said method comprising: • A step of obtaining a panel (33) comprising at least one stiffening element (35) and which is intended to form the second skin (3); • a first positioning step which consists of positioning, inside a first mold, at least one formwork means which is configured to define the first skin (2); • a first casting step which consists of casting, inside the first mold, a hydraulic mixture which is intended to constitute the first skin (2); • a second positioning step which consists of positioning the connection system (5) in the stiffening element (35) of the panel (33) which is intended to form the second skin (3), and holding the panel (33) on the connection system (5);• a third positioning step, which consists of positioning the connection system (5) inside the hydraulic mixture contained in the first mold; • a first hardening step, which consists of making or allowing to harden the hydraulic mixture contained in said first mold, this in order to obtain the first skin (2), • a second step of engaging the connection system (5) with said stiffening element (35) to fix the connection system (5) to the panel (33),; the method being characterized in that at least one element (60) of structure of the supporting system (6) is a vertical column (67) made of hydraulic binder-based material associated with a metal reinforcement (68), and in that it comprises, after the first casting step and before the first hardening step, a first implantation step which consists of implanting one of a first portion (69) of the reinforcement (67) inside the hydraulic mixture contained in the first mold and positioning a column formwork, which is configured to define the column (67), inside the hydraulic mixture contained in the first mold.

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