A prefabricated concrete sandwich thermal insulation shear wall module, a shear wall and an assembling method

Abstract

The application provides a prefabricated concrete sandwich thermal insulation shear wall module, a shear wall and an assembling method, which comprises an inner leaf prefabricated concrete slab, a plurality of vertical U-shaped ribs reserved to extend outward at the upper and lower ends respectively, which are used for lap joint and assembly with adjacent prefabricated concrete sandwich thermal insulation shear wall modules, a first steel mesh and a second steel mesh arranged in the inner leaf prefabricated concrete slab; a thermal insulation layer arranged on the outer side of the inner leaf prefabricated concrete slab, a plurality of holes arranged in the thermal insulation layer; an outer leaf prefabricated concrete slab arranged on the outer side of the thermal insulation layer, a third steel mesh arranged in the outer leaf prefabricated concrete slab; an outer facing layer arranged on the outer side of the outer leaf prefabricated concrete slab; and a plurality of connecting pieces arranged at the holes of the thermal insulation layer, wherein the connecting piece comprises a connecting piece rod arranged in the thermal insulation layer, one end of the connecting piece rod is connected with a limiting end arranged in the outer leaf prefabricated concrete slab, and the other end of the connecting piece rod is connected with a joint arranged in the inner leaf prefabricated concrete slab.

Description

Technical Field

[0001] This invention relates to the field of concrete shear wall technology, specifically to a precast concrete sandwich insulated shear wall module, a shear wall, and an assembly method. Background Technology

[0002] Promoting industrialized construction is an important way for my country to achieve its goals of building energy conservation and carbon emissions reduction. Using prefabricated structures in municipal infrastructure construction and underground space development can effectively shorten construction periods and improve project quality, thus contributing to the green development of urban and rural construction.

[0003] Precast concrete shear wall structures are the most common structural type in industrialized buildings and have been increasingly adopted in municipal engineering and underground space development in recent years. Based on whether an insulation layer is installed between the precast concrete sections, precast concrete shear walls can be divided into precast concrete non-sandwich shear walls and precast concrete sandwich insulated shear walls. Compared to precast concrete non-sandwich shear walls, precast concrete sandwich insulated shear walls consist of inner and outer leaf concrete slabs, an intermediate insulation layer, and connectors. This helps to comprehensively improve the thermal insulation, fire resistance, and durability of the exterior walls of ultra-low energy consumption buildings, meeting the requirements of building energy conservation and green construction.

[0004] Precast concrete sandwich insulated shear wall connectors are key components connecting the inner and outer layers of concrete in precast sandwich insulated walls and transferring shear force. Currently, in practical engineering applications, the commonly used connectors are mainly stainless steel connectors and FRP (Fiber Reinforced Plastic) connectors. Stainless steel connectors have reliable mechanical properties, good durability and fire resistance, but low thermal conductivity and relatively high price. FRP connectors have low thermal conductivity, good durability, high strength, and convenient construction. They can effectively avoid the cold (thermal) bridging effect at the connector location, significantly improving the insulation effect and safety of the wall, and have broad engineering application prospects in reducing building energy consumption. FRP connectors can be divided into three types according to their structural form: rod-shaped, sheet-shaped, and truss-shaped. Among them, FRP rod-shaped connectors are the most widely used in engineering applications both domestically and internationally. FRP rod-shaped connectors have advantages such as simple manufacturing, convenient installation, and fast construction speed, but their positioning effect is poor, and their geometric shape and mechanical properties need improvement.

[0005] Furthermore, the connection technology between upper and lower layers is a key element in ensuring the safety of precast concrete sandwich insulated shear wall structures. Currently, grouting sleeve connections and grout-anchored lap connections are commonly used in engineering projects. Both have strict requirements on grout preparation, grouting technology, and wall positioning. Grouting sleeve connections ensure continuous stress on the reinforcing bars, but require a large number of steel sleeves, resulting in higher project costs. Grout-anchored lap connections provide indirect lap connections, but this connection method is greatly affected by the grouting process, resulting in longer lapped reinforcing bars in the wall.

[0006] Therefore, the urgent technical problem to be solved is how to enhance the overall performance of precast concrete sandwich insulated shear walls and improve the ease of construction. Summary of the Invention

[0007] This invention is made to solve the above-mentioned problems, and its purpose is to provide a precast concrete sandwich insulated shear wall module, a shear wall, and an assembly method.

[0008] This invention provides a precast concrete sandwich insulated shear wall module, characterized by the following features: an inner precast concrete slab with several outwardly extending vertical U-shaped ribs at both ends for overlapping and assembling with adjacent precast concrete sandwich insulated shear wall modules; the inner precast concrete slab contains a first and a second steel mesh; an insulation layer disposed on the outside of the inner precast concrete slab, with several holes within the insulation layer; an outer precast concrete slab disposed on the outside of the insulation layer, with a third steel mesh within the outer precast concrete slab; an exterior finishing layer disposed on the outside of the outer precast concrete slab; and several connectors disposed at the holes in the insulation layer for connecting the outer precast concrete slab, the insulation layer, and the inner precast concrete slab. Each connector includes a connector rod disposed in the insulation layer, one end of which is connected to a limiting end disposed in the outer precast concrete slab, and the other end of which is connected to a joint disposed in the inner precast concrete slab.

[0009] The precast concrete sandwich insulated shear wall module provided by the present invention may also have the following features: wherein the first steel mesh, the second steel mesh and the third steel mesh are all composed of vertical steel bars and horizontal steel bars.

[0010] The precast concrete sandwich insulated shear wall module provided by the present invention may also have the following features: wherein the first steel mesh is disposed on the outer side of the inner leaf precast concrete slab, and the second steel mesh is disposed on the inner side of the inner leaf precast concrete slab.

[0011] The precast concrete sandwich insulated shear wall module provided by the present invention may also have the following features: wherein the connecting rod is threadedly connected to the limiting end, and a nut is provided at the connection point; the connecting rod is threadedly connected to the joint, and a nut is provided at the connection point.

[0012] The precast concrete sandwich insulated shear wall module provided by the present invention may also have the following features: wherein the limiting end includes a first large end plate, a first small end plate and a first connecting frustum fixed between the first large end plate and the first small end plate, the connecting rod includes a core rod and a thin-walled annular cylinder disposed outside the core rod, the thin-walled annular cylinder is provided with a plurality of protruding hemisphericals on the outside, and the joint includes a second large end plate, a second small end plate and a second connecting frustum fixed between the second large end plate and the second small end plate.

[0013] The precast concrete sandwich insulated shear wall module provided by the present invention may also have the following feature: the outer surface layer is made of a precast UHPC thin plate with protrusions, which is used to increase the shear force between the outer surface layer and the outer precast concrete slab.

[0014] The precast concrete sandwich insulated shear wall module provided by the present invention may also have the following feature: wherein the insulation layer is made of at least one of extruded polystyrene foam board, polyurethane foam board, phenolic board, polyurethane board, vacuum insulation board, gold board and aerogel.

[0015] The present invention also provides a precast concrete sandwich insulated shear wall, which has the following characteristics: the precast concrete sandwich insulated shear wall includes several precast concrete sandwich insulated shear wall modules, which are overlapped and cast in the vertical direction to form a precast concrete sandwich insulated shear wall.

[0016] The precast concrete sandwich insulated shear wall provided by the present invention may also have the following feature: the U-shaped bars between two adjacent precast concrete sandwich insulated shear wall modules form a cavity at the lap joint, and horizontal reinforcing bars are arranged at the four corners of the cavity.

[0017] This invention also provides a method for assembling a precast concrete sandwich insulated shear wall, characterized by the following specific assembly steps: S1, transporting the precast concrete sandwich insulated shear wall module to the construction site, hoisting it to the designated position, installing temporary supports, adjusting the position, elevation, and verticality of the shear wall, then lapping the vertical U-shaped bars with the vertical U-shaped bars of the adjacent precast concrete sandwich insulated shear wall module, followed by pouring UHPC concrete for connection, thus achieving vertical assembly; S2, achieving continuous insulation layer arrangement by arranging insulation layers of the same material at the insulation layer connection points, and sealing the outer precast concrete slab connection points with a crack-resistant material composed of cement-based and toughening materials, thus achieving horizontal assembly.

[0018] The role and effect of invention

[0019] According to the present invention, a precast concrete sandwich insulated shear wall module, shear wall and assembly method are provided. The present invention has the advantages of good comprehensive performance, convenient construction and less on-site wet work by reserving several U-shaped bars extending outward at both ends of the inner leaf precast concrete slab. The cavity area formed during the assembly process is connected by post-cast UHPC. In addition, compared with grouting sleeve connection and grout anchor lap joint, the construction method of the present invention is not affected by the irrigation process and the required lap steel bar length is also shorter. Attached Figure Description

[0020] Figure 1This is a structural schematic diagram of the precast concrete sandwich insulated shear wall module in an embodiment of the present invention;

[0021] Figure 2 This is a side view of a precast concrete sandwich insulated shear wall in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the outer decorative layer in an embodiment of the present invention;

[0023] Figure 4 This is a structural schematic diagram of the connector in an embodiment of the present invention; and

[0024] Figure 5 This is a schematic diagram of the disassembled structure of the connector in an embodiment of the present invention. Detailed Implementation

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] To make the technical means, creative features, objectives and effects of the present invention easy to understand, the following embodiments, in conjunction with the accompanying drawings, specifically illustrate the precast concrete sandwich insulated shear wall module, shear wall and assembly method of the present invention.

[0027] Figure 1 This is a structural schematic diagram of a precast concrete sandwich insulated shear wall module in an embodiment of the present invention. Figure 2 This is a side view of a precast concrete sandwich insulated shear wall in an embodiment of the present invention.

[0028] The precast concrete sandwich insulated shear wall 200 of the present invention is assembled from several precast concrete sandwich insulated shear wall modules 100.

[0029] like Figure 1-2 As shown, the precast concrete sandwich insulated shear wall module 100 in this embodiment includes: an inner leaf precast concrete slab 10, an insulation layer 20, an outer leaf precast concrete slab 30, an outer finishing layer 40, and several connectors 50.

[0030] The precast concrete sandwich insulated shear wall module 100 has a length of 3000mm and a width of 1800mm.

[0031] Several vertical U-shaped bars 14 are pre-installed at the top and bottom ends of the inner leaf precast concrete slab 10, extending outwards. These vertical U-shaped bars 14 are arranged at equal intervals and staggered. When two precast concrete sandwich insulated shear wall modules 100 are vertically connected, a composite floor slab 70 is placed above the lower shear wall, with reinforcing bars in the composite floor slab 70, and concrete is poured to the specified thickness. The lower U-shaped bars 14 of the upper inner leaf precast concrete slab 10 and the upper U-shaped bars 14 of the lower inner leaf precast concrete slab 10 overlap above the composite floor slab 70 to form a horizontal cavity. The height of the horizontal cavity is the overlap length of the U-shaped bars 14, typically 90mm. All U-shaped bars 14 have a diameter of 14mm and a spacing of 200mm.

[0032] Horizontal reinforcing bars are arranged at the four corners of the horizontal cavity. The diameter of the horizontal reinforcing bars 19 is 8mm, forming a reinforcing bar skeleton. The UHPC18 is then poured to fill the horizontal cavity. The height of the UHPC18 is 130mm.

[0033] The inner leaf precast concrete slab 10 is provided with a first steel mesh 11 and a third steel mesh 17. The first steel mesh 11 is composed of a first vertical steel bar 12 and a first horizontal steel bar 13. The third steel mesh 17 is composed of a second vertical steel bar and a second horizontal steel bar. The first steel mesh 11 is located on the outside of the inner leaf precast concrete slab 10, and the third steel mesh 17 is located on the inside of the inner leaf precast concrete slab 10. The diameter of the first vertical steel bar 12 and the second vertical steel bar is 14 mm and the spacing is 200 mm. The diameter of the first horizontal steel bar and the second horizontal steel bar is 8 mm and the spacing is 200 mm.

[0034] The inner precast concrete slab 10 serves as a load-bearing component of the precast concrete sandwich insulated shear wall module 100, participating in the structural stress of the building. Its thickness is generally 160mm to 250mm.

[0035] The insulation layer 20 is set on the outside of the inner leaf precast concrete slab 10. The insulation layer 20 has a thickness of 170mm. The insulation layer 20 has several holes for accommodating the connector 50. The insulation layer 20 can be composed of several layers. The insulation layer 20 is made of at least one of the following materials: extruded polystyrene foam board, polyurethane foam board, phenolic board, polyurethane board, vacuum insulation board, gold board and aerogel. The edge sealing part is made of Class A fireproof material silicon graphene.

[0036] The outer precast concrete slab 30 is set on the outside of the insulation layer 20. The outer precast concrete slab 30 is provided with a third steel mesh 33 composed of a third vertical steel bar 3115 and a third horizontal steel bar 3216. The diameter of the third vertical steel bar 3115 and the third horizontal steel bar is 6mm and the spacing is 150mm.

[0037] The cross-sectional thickness of the outer precast concrete slab 30 is determined based on the anchorage length of the connector 50 and the thickness of the concrete protective layer, and is generally 60mm.

[0038] Figure 3 This is a schematic diagram of the structure of the outer decorative layer 40 in an embodiment of the present invention.

[0039] like Figure 3 As shown, the outer cladding layer 40 is disposed on the outside of the outer leaf precast concrete slab 30. The outer cladding layer 40 is made of precast UHPC thin plate with protrusions 41 and the minimum thickness of the UHPC thin plate is 5mm.

[0040] In hot-summer-cold-winter, cold, and frigid regions, the exterior finish layer 40 uses a UHPC thin sheet with raised dots 41; in hot-summer-warm-winter regions, the exterior finish layer 40 uses a UHPC thin sheet with raised dots 41 as a base and is coated with a passive radiation cooling coating.

[0041] The UHPC sheet with protrusions 41 is prefabricated in the factory, and its thickness, excluding the protrusions 41, is not less than 5mm. The dimensions of the protrusions 41 on the outer surface layer 40 are calculated based on the self-weight and wind load of the outer surface layer 40 in engineering applications. Typically, the diameter of the protrusions 41 is D = 20mm to 30mm, the height is H = 1 to 3mm, and the spacing between adjacent protrusions 41 is 30mm to 100mm. In the embodiment of the present invention, the diameter 42 of the protrusions of the shear wall is set to D = 25mm, the height 43 of the protrusions is H = 2mm, the horizontal spacing between adjacent protrusions 41 is 50mm, and the vertical spacing between adjacent protrusions 41 is 100mm.

[0042] Figure 4 This is a schematic diagram of the structure of the connector 50 in an embodiment of the present invention. Figure 5 This is a schematic diagram of the split structure of the connector 50 in an embodiment of the present invention.

[0043] like Figure 4-5 As shown, the connector 50 is disposed at the hole of the insulation layer 20. The connector 50 includes a connector rod 51, a limiting end 52 and a joint 53, and is used to connect the outer leaf precast concrete slab 30, the insulation layer 20 and the inner leaf precast concrete slab 10.

[0044] The connectors 50 are evenly and symmetrically arranged along the precast concrete sandwich insulated shear wall module 100, and the distance between two adjacent rod-shaped connectors 50 is generally 500mm.

[0045] The connecting rod 51 is arranged in the insulation layer 20. One end of the connecting rod 51 is connected to the limiting end 52 arranged in the outer leaf precast concrete slab 30, and the other end of the connecting rod 51 is connected to the joint 53 arranged in the inner leaf precast concrete slab 10.

[0046] The connecting rod 51 is threaded to the limiting end 52, and a nut 54 is provided at the connection. The limiting end 52 includes a first large end plate 55, a first small end plate 57, and a first connecting frustum 56 fixed between the first large end plate 55 and the first small end plate 57. A first internal thread 58 is provided on one side of the first small end plate 57 for threaded connection with the connecting rod 51.

[0047] The connecting rod 51 includes a core rod 65 and a thin-walled annular cylinder 63 disposed outside the core rod 65. The thin-walled annular cylinder 63 is provided with a plurality of protruding hemispherical spheres 64 on its outer side.

[0048] The connecting rod 51 is threaded to the joint 53, and a nut 54 is provided at the connection. The joint 53 includes a second large end plate 59, a second small end plate 61, and a second connecting frustum 60 fixed between the second large end plate 59 and the second small end plate 61. A second internal thread 62 is provided on one side of the second small end plate 61 for threaded connection with the connecting rod 51.

[0049] In this example, the specific dimensions of connector 50 are available as follows:

[0050] The length of the limiting end 52 without threads is 25mm; the height of the first large end plate 55 is 5mm and the diameter is 50mm; the height of the first small end plate 57 is 5mm and the diameter is 30mm; the height of the first connecting frustum 56 between the first large end plate 55 and the first small end plate 57 is 15mm; and the diameter of the first internal thread 58 is 18mm and the height is 35mm.

[0051] The length of the connecting rod 51, excluding the thread, is 170mm; the diameter of the inner core rod 65 is 26mm; the wall thickness of the thin-walled annular cylinder 63 is 2mm, and its length is 170mm; the diameter of the raised hemispherical 64 is 3mm, and the spacing between adjacent raised hemispherical 64 has two specifications, namely 3mm and 1.5mm; the diameter of the external thread of the connecting rod 51 near the limiting end 52 is 18mm, and the depth is 35mm; the diameter of the external thread on the side near the joint 53 is 18mm, and the depth is 55mm.

[0052] The length of connector 53 without threads is 45mm; the height of the second large end plate 59 is 5mm and the diameter is 50mm; the height of the second small end plate 61 is 5mm and the diameter is 30mm; the height of the second connecting frustum 60 between the second large end plate 59 and the second small end plate 61 is 35mm; the diameter of the second internal thread 62 is 18mm and the height is 55mm.

[0053] The internal thread of nut 54 has an internal thread diameter of 18mm, a height of 10mm, and a wall thickness of 12mm.

[0054] The precast concrete sandwich insulated shear wall module 100 of the present invention is assembled from several precast concrete sandwich insulated shear wall modules 100. The specific construction method of the precast concrete sandwich insulated shear wall 200 is as follows:

[0055] S1: During the production process in the factory, the UHPC sheet with raised dots 41 is first poured into a mold with concave dots. Then, the UHPC is leveled and the surface is finished. After the outer surface layer 40 reaches the lifting strength of the UHPC, the outer surface layer 40 is flipped using a mechanical mold flipping machine.

[0056] S2: Lay the precast UHPC thin plate in the mold of the outer leaf precast concrete slab 30, tie the third steel mesh 33 on the top of the UHPC thin plate, and pour ordinary concrete to the specified thickness to form the outer leaf precast concrete slab 30.

[0057] S3: Before the cement of the outer leaf precast concrete slab 30 has dried completely, the first large end plate 55 and part of the first connecting frustum 56 in the limiting end 52 of the connector 50 are placed into the cement of the outer leaf precast concrete slab 30. Then, the nut 54 and the connector rod 51 are connected in sequence. Then, the insulation layer 20 is arranged layer by layer on the outer leaf precast concrete slab 30. The holes on the insulation layer 20 are matched with the position of the connector 50. The connector 50 is placed in the holes of the insulation layer 20. Then, the nut 54 with internal thread and the joint 53 are connected respectively. Then, the adhesive tape or expanding foam is applied to the connection 21 between the insulation layers 20 and the gap between the insulation layer 20 and the connector 50.

[0058] S4: After reserving the thickness of the concrete protective layer above the insulation layer 20, tie the first steel mesh 11 and the third steel mesh 17, and reserve the U-shaped reinforcement 14 at the connection between the upper and lower shear walls, and then pour concrete to the predetermined position.

[0059] S5: After the sandwich insulated shear wall has cured to 75% of its design strength, it is transported to the construction site, hoisted to the designated position, and temporary supports are installed. After adjusting the position, elevation, and verticality of the shear wall, the upper and lower shear walls are connected. The connection of the inner leaf precast concrete slab 10 is made by lapping U-shaped bars 14 and then pouring UHPC18 concrete. The connection of the insulation layer 20 is made of the same material to achieve continuous arrangement of the insulation layer 20. The connection of the outer leaf precast concrete slab 30 is sealed with a crack-resistant material composed of cement-based material and toughening material.

[0060] S6: Remove the temporary supports and install other precast concrete sandwich insulated shear wall modules 100.

[0061] The role and effect of the embodiments

[0062] In this invention, the limiting end, connecting rod, and joint of the connector are connected by threads. During construction, the outer leaf precast concrete slab is first poured, the limiting end and connecting rod are placed, the insulation layer is then passed through the connecting rod, the joint is then connected, and finally the inner leaf precast concrete slab is poured. Compared with the integrated connector, it has the advantages of high standardization, convenient construction and low price.

[0063] This invention applies UHPC to the connection of precast concrete sandwich insulated shear walls between upper and lower layers, which has the advantages of good performance, convenient construction and less on-site wet work.

[0064] The protrusions on the surface of the UHPC sheet can increase the interfacial adhesion between the sheet and the outer precast concrete slab.

[0065] Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A precast concrete sandwich insulation shear wall module, characterized by, The precast concrete sandwich thermal insulation shear wall module comprises: an inner leaf precast concrete slab, the upper and lower ends of which are respectively reserved a plurality of vertical U-shaped reinforcing bars extending outward, which are used for lapping and assembling with adjacent precast concrete sandwich thermal insulation shear wall modules, and the inner leaf precast concrete slab is internally provided with a first steel mesh and a second steel mesh; a thermal insulation layer, which is arranged on the outer side of the inner leaf precast concrete slab, and is internally provided with a plurality of holes; an outer leaf precast concrete slab, which is arranged on the outer side of the thermal insulation layer, and is internally provided with a third steel mesh; an outer facing layer, which is arranged on the outer side of the outer leaf precast concrete slab; and a plurality of connecting pieces, which are arranged at the holes of the thermal insulation layer, and are used for connecting the outer leaf precast concrete slab, the thermal insulation layer and the inner leaf precast concrete slab, the connecting piece comprising a connecting piece rod arranged in the thermal insulation layer, one end of the connecting piece rod being connected with a limiting end arranged in the outer leaf precast concrete slab, and the other end of the connecting piece rod being connected with a joint arranged in the inner leaf precast concrete slab, wherein the connecting piece rod is threadedly connected with the limiting end, and a nut is arranged at the connecting position, the connecting piece rod is threadedly connected with the joint, and a nut is arranged at the connecting position, the limiting end comprises a first large end plate, a first small end plate and a first connecting circular table fixed between the first large end plate and the first small end plate, the connecting piece rod comprises a core rod and a thin-walled circular column arranged on the outer side of the core rod, a plurality of convex semicircular balls are arranged on the outer side of the thin-walled circular column, the joint comprises a second large end plate, a second small end plate and a second connecting circular table fixed between the second large end plate and the second small end plate, the outer facing layer adopts a precast UHPC thin plate with convex points, which is used for increasing the shear force between the outer facing layer and the outer leaf precast concrete slab.

2. The precast concrete sandwich thermal insulation shear wall module according to claim 1, wherein: wherein, the first steel mesh, the second steel mesh and the third steel mesh are all composed of vertical steel bars and horizontal steel bars.

3. The precast concrete sandwich thermal insulation shear wall module according to claim 2, wherein: wherein the first steel mesh is arranged on the outer side of the inner leaf precast concrete slab, and the second steel mesh is arranged on the inner side of the inner leaf precast concrete slab.

4. The precast concrete sandwich thermal insulation shear wall module according to claim 1, wherein: wherein the thermal insulation layer adopts at least one of extruded polystyrene foam board, polyurethane foam board, phenolic board, polyurethane board, vacuum thermal insulation board, real gold board and aerogel.

5. The precast concrete sandwich insulation shear wall module assembly of claim 1, wherein, The precast concrete sandwich thermal insulation shear wall comprises a plurality of precast concrete sandwich thermal insulation shear wall modules, the precast concrete sandwich thermal insulation shear wall modules are lapped and cast and assembled in the vertical direction, and the precast concrete sandwich thermal insulation shear wall is formed.

6. The precast concrete sandwich thermal insulation shear wall according to claim 5, wherein: wherein the U-shaped reinforcing bars between the two adjacent precast concrete sandwich thermal insulation shear wall modules form a cavity at the lapping position, and horizontal reinforcing steel bars are arranged at the four corners of the cavity.

7. A method of assembling a precast concrete sandwich shear wall according to claim 6, wherein, The assembling method is specifically as follows: S1, the prefabricated concrete sandwich thermal shear wall module is transported to the construction site, hoisted to the designated position, the temporary support is installed, the position, elevation and perpendicularity of the shear wall are adjusted, the vertical U-shaped rib is buckled and overlapped with the vertical U-shaped rib of the adjacent prefabricated concrete sandwich thermal shear wall module, then UHPC concrete is poured to realize the assembly in the vertical direction; S2, the continuous arrangement of the thermal insulation layer is realized by arranging the thermal insulation layer of the same material at the connection of the thermal insulation layer, and the sealing is realized by using the crack-resistant material composed of cement-based material and toughening material at the connection of the outer leaf prefabricated concrete slab to realize the assembly in the horizontal direction.

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