Prefabricated concrete sandwich heat preservation shear wall module, shear wall and assembling method

Abstract

The invention provides a prefabricated concrete sandwich heat preservation shear wall module, a shear wall and an assembling method, the prefabricated concrete sandwich heat preservation shear wall module comprises an inner prefabricated concrete plate, a plurality of vertical U-shaped ribs are reserved at the upper end and the lower end of the inner prefabricated concrete plate respectively and extend outwards, and the vertical U-shaped ribs are used for being spliced with the adjacent prefabricated concrete sandwich heat preservation shear wall module in a lap joint mode. A first reinforcing mesh and a second reinforcing mesh are arranged in the inner prefabricated concrete slab; the heat preservation layer is arranged on the outer side of the inner leaf prefabricated concrete plate, and a plurality of holes are formed in the heat preservation layer; the outer prefabricated concrete plate is arranged on the outer side of the heat preservation layer, and a third reinforcing mesh is arranged in the outer prefabricated concrete plate; the outer facing layer is arranged on the outer side of the outer prefabricated concrete slab; the connecting pieces are arranged at the holes of the heat preservation layer, each connecting piece comprises a connecting piece rod arranged in the heat preservation layer, one end of each connecting piece rod is connected with the limiting end arranged in the outer prefabricated concrete slab, and the other end of each connecting piece rod is connected with the connector arranged in the inner prefabricated concrete slab.

Description

Technical Field

[0001] The invention relates to the technical field of concrete shear walls, and in particular to a prefabricated concrete sandwich insulation shear wall module, a shear wall and an assembling method. Background Art

[0002] Promoting building industrialization is an important way for my country to achieve building energy conservation and "dual carbon" goals. Using prefabricated structures in municipal infrastructure construction, underground space development and other fields can effectively shorten construction periods and improve project quality, which is conducive to achieving green development of urban and rural construction.

[0003] Precast concrete shear wall structure is the most important structural type of industrialized buildings. In recent years, it has also been gradually promoted in the fields of municipal engineering and underground space development. According to whether an insulation layer is set between precast concrete, precast concrete shear walls can be divided into precast concrete non-sandwich shear walls and precast concrete sandwich insulation shear walls. Compared with precast concrete non-sandwich shear walls, precast concrete sandwich insulation shear walls are composed of inner and outer leaf concrete slabs, middle insulation layers and connectors, which helps to comprehensively improve the insulation, fire resistance and durability of the exterior walls of ultra-low energy consumption buildings, and meet the requirements of building energy conservation and green construction.

[0004] Precast concrete sandwich insulation shear wall connectors are key components for connecting the inner and outer leaves of the precast sandwich insulation wall and transmitting shear force. In current engineering applications, the commonly used connectors are mainly stainless steel connectors and FRP (Fiber Reinforce Plastic, FRP for short) connectors. Stainless steel connectors have reliable mechanical properties, good durability and fire resistance, but low thermal conductivity and relatively high prices. FRP connectors have the characteristics of low thermal conductivity, good durability, high strength and convenient construction. They can effectively avoid the cold (hot) bridge effect of the wall at the connector part, significantly improve 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 the structural type: rod-shaped, sheet-shaped and truss-shaped. Among them, FRP rod-shaped connectors are the most widely used in engineering applications at home and abroad. FRP rod-shaped connectors have the advantages of simple manufacturing, convenient installation and fast construction speed, but their positioning effect is poor, and their geometric form and mechanical properties need to be improved.

[0005] In addition, the connection technology between the upper and lower layers is a key factor in ensuring the safety of the precast concrete sandwich insulation shear wall structure. At present, grouting sleeve connection and grouting anchor lap connection are commonly used in engineering projects. Both have strict requirements on grouting material preparation, grouting technology and wall positioning. The grouting sleeve connection steel bars are continuously stressed, but the amount of steel sleeves is large and the project cost is high. Grouting anchor lap steel bar indirect lap connection, this connection method is greatly affected by the grouting process, and the length of the lap steel bars in the wall is longer.

[0006] Therefore, the technical problem that needs to be solved urgently is how to enhance the comprehensive performance of precast concrete sandwich insulation shear walls and improve the convenience of construction. Summary of the invention

[0007] The present invention is made to solve the above-mentioned problem, and aims to provide a prefabricated concrete sandwich insulation shear wall module, a shear wall and an assembly method.

[0008] The present invention provides a precast concrete sandwich insulation shear wall module, which has the following characteristics, including: an inner leaf precast concrete slab, with a plurality of vertical U-shaped ribs extending outwardly reserved at the upper and lower ends respectively for overlapping and assembling with adjacent precast concrete sandwich insulation shear wall modules, a first steel mesh and a second steel mesh being arranged inside the inner leaf precast concrete slab; an insulation layer, which is arranged on the outer side of the inner leaf precast concrete slab, and a plurality of holes are arranged in the insulation layer; an outer leaf precast concrete slab, which is arranged on the outer side of the insulation layer, and a third steel mesh is arranged inside the outer leaf precast concrete slab; an outer facing layer, which is arranged on the outer side of the outer leaf precast concrete slab; and a plurality of connectors, which are arranged at the holes of the insulation layer and are used to connect the outer leaf precast concrete slab, the insulation layer and the inner leaf precast concrete slab, the connector comprising a connector rod arranged in the insulation layer, one end of the connector rod being connected to a limiting end arranged in the outer leaf precast concrete slab, and the other end of the connector rod being connected to a joint arranged in the inner leaf precast concrete slab.

[0009] The prefabricated concrete sandwich insulation shear wall module provided by the present invention may also have the following characteristics: 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 insulation shear wall module provided by the present invention may also have the following features: 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.

[0011] The prefabricated concrete sandwich insulation 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, a nut is provided at the connection, and the connecting rod is threadedly connected to the joint, a nut is provided at the connection.

[0012] The precast concrete sandwich insulation 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 circular ring cylinder arranged on the outside of the core rod, a plurality of raised semicircular balls are arranged on the outside of the thin-walled circular ring cylinder, 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 insulation shear wall module provided by the present invention may also have the following features: wherein the outer facing layer adopts a precast UHPC sheet with convex points to increase the shear force between the outer facing layer and the outer leaf precast concrete panel.

[0014] The prefabricated concrete sandwich insulation shear wall module provided by the present invention may also have the following characteristics: wherein the material used for the insulation layer is at least one of extruded polystyrene foam board, polyurethane foam board, phenolic board, polyurethane board, vacuum insulation board, real gold board and aerogel.

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

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

[0017] The present invention also provides an assembly method for a precast concrete sandwich insulation shear wall, which has the following characteristics: S1, transporting the precast concrete sandwich insulation 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, and then lap-jointing the vertical U-shaped reinforcement with the vertical U-shaped reinforcement of the adjacent precast concrete sandwich insulation shear wall module, and then pouring UHPC concrete to connect, so as to achieve assembly in the vertical direction; S2, by arranging insulation layers of the same material at the connection of the insulation layers, a continuous arrangement of the insulation layers is achieved, and the anti-cracking material composited with cement-based materials and toughening materials is used at the connection of the outer leaf precast concrete slabs for sealing, so as to achieve assembly in the horizontal direction.

[0018] Functions and Effects of the Invention

[0019] According to a precast concrete sandwich insulation shear wall module, shear wall and assembly method involved in the present invention, a plurality of U-shaped bars extending outward are reserved at the upper and lower ends of the inner leaf precast concrete slab, and the cavity area formed during the assembly process is connected by post-cast UHPC, which has the advantages of good comprehensive performance, convenient construction and less on-site wet work. In addition, compared with the grouting sleeve connection and the grout anchor overlap, the construction method involved in the present invention will not be affected by the irrigation process, and the required overlap steel bar length is also shorter. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0022] Figure 3 is a schematic structural diagram of an outer finishing layer in an embodiment of the present invention;

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

[0024] Figure 5 It is a schematic diagram of the disassembled structure of the connecting piece in the embodiment of the present invention. DETAILED DESCRIPTION

[0025] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the following embodiments are combined with the accompanying drawings to specifically explain the precast concrete sandwich insulation shear wall module, shear wall and assembly method of the present invention.

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

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

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

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

[0031] A plurality of vertical U-shaped ribs 14 extending outward are reserved at the upper and lower ends of the inner leaf precast concrete slab 10, and the plurality of vertical U-shaped ribs 14 are arranged at equal distances and staggered. When the upper and lower layers of the two precast concrete sandwich insulation shear wall modules 100 are vertically connected, the composite floor slab 70 is arranged above the lower shear wall, the steel bars in the composite floor slab 70 are arranged, and the concrete is poured to the specified thickness of the floor slab; the lower end U-shaped ribs 14 of the upper inner leaf precast concrete slab 10 and the upper end U-shaped ribs 14 of the lower inner leaf precast concrete slab 10 overlap each other 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 ribs 14, which is generally 90 mm, wherein the diameter of the U-shaped ribs 14 is 14 mm, and the spacing is 200 mm.

[0032] Horizontal reinforcing bars are arranged at the four corners of the horizontal cavity. The diameter of the horizontal reinforcing bar 19 is 8 mm to form a steel skeleton. The post-cast UHPC 18 fills the horizontal cavity. The height of the post-cast UHPC 18 is 130 mm.

[0033] A first steel mesh 11 and a third steel mesh 17 are provided inside the inner leaf precast concrete slab 10. The first steel mesh 11 is composed of a first vertical steel bar 12 and a first horizontal steel bar 13, and 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 arranged on the outer side of the inner leaf precast concrete slab 10, and the third steel mesh 17 is arranged on the inner side of the inner leaf precast concrete slab 10. The diameters of the first vertical steel bar 12 and the second vertical steel bar are both 14 mm, and the spacings are both 200 mm. The diameters of the first horizontal steel bar and the second horizontal steel bar are both 8 mm, and the spacings are both 200 mm.

[0034] The inner leaf precast concrete slab 10 is a load-bearing component of the precast concrete sandwich insulation shear wall module 100 and participates in the stress of the building structure. The thickness of the inner leaf precast concrete slab 10 is generally 160 mm to 250 mm.

[0035] The insulation layer 20 is arranged on the outer side of the inner leaf precast concrete slab 10. The thickness of the insulation layer 20 is 170 mm. A plurality of holes for accommodating the connectors 50 are arranged in the insulation layer 20. The insulation layer 20 may be composed of a plurality of layers. The material used for the insulation layer 20 is at least one of extruded polystyrene foam board, polyurethane foam board, phenolic board, polyurethane board, vacuum insulation board, real gold board and aerogel. The edge sealing part adopts Class A fireproof material silicone ink.

[0036] The outer leaf precast concrete slab 30 is arranged outside the insulation layer 20, and a third steel mesh 33 composed of a third vertical steel bar 3115 and a third horizontal steel bar 3216 is arranged inside the outer leaf precast concrete slab 30, wherein the diameters of the third vertical steel bar 3115 and the third horizontal steel bar are both 6mm, and the spacing is both 150mm.

[0037] The cross-sectional thickness of the outer leaf precast concrete slab 30 is determined according to the anchoring length of the connecting member 50 and the thickness of the concrete cover, and is generally 60 mm.

[0038] Figure 3 Schematic diagram of the structure of the outer finishing layer 40 in an embodiment of the present invention.

[0039] like Figure 3 As shown, the outer facing layer 40 is arranged on the outer side of the outer leaf precast concrete panel 30. The outer facing layer 40 adopts a precast UHPC sheet with protrusions 41. The minimum thickness of the UHPC sheet is 5 mm.

[0040] In hot summer and cold winter areas, cold areas, and extremely cold areas, the exterior finishing layer 40 uses a UHPC sheet with protrusions 41; in hot summer and warm winter areas, the exterior finishing layer 40 uses a UHPC sheet with protrusions 41 as a base and is coated with a passive radiation cooling paint.

[0041] The UHPC sheet with the protrusions 41 is prefabricated in the factory, and its thickness without considering the protrusions 41 is not less than 5 mm. The protrusions 41 of the exterior facing layer 40 are calculated according to the size of the protrusions 41 used for the self-weight and wind load of the exterior facing layer 40 in the engineering application. Usually, the diameter of the protrusions 41 is D=20mm~30mm, the height is H=1~3mm, and the spacing between adjacent protrusions 41 is 30mm~100mm. According to the size setting of the shear wall in the embodiment of the present invention, the diameter 42 of the protrusions is D=25mm, the height 43 of the protrusions is H=2mm, the spacing between adjacent protrusions 41 in the horizontal direction is 50mm, and the spacing between adjacent protrusions 41 in the vertical direction is 100mm.

[0042] Figure 4 Schematic diagram of the structure of the connecting member 50 in an embodiment of the present invention. Figure 5 Schematic diagram of the disassembled structure of the connecting member 50 in the 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 , and 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 connecting members 50 are evenly and symmetrically arranged along the precast concrete sandwich insulation shear wall module 100, and the distance between two adjacent rod-shaped connecting members 50 is generally 500 mm.

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

[0046] The connecting rod 51 is threadedly connected to the limit end 52, and a nut 54 is provided at the connection. The limit 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 arranged outside the core rod 65 , and a plurality of protruding semicircular balls 64 are arranged outside the thin-walled annular cylinder 63 .

[0048] The connecting rod 51 is threadedly connected 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 the connector 50 are as follows:

[0050] The length of the limiting end 52 without thread 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 cone 56 between the first large end plate 55 and the first small end plate 57 is 15mm; 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 thin-walled annular cylinder 63 has a wall thickness of 2mm and a length of 170mm; the diameter of the raised semicircular spheres 64 is 3mm, and the spacing between adjacent raised semicircular spheres 64 has two specifications, namely 3mm and 1.5mm; the diameter of the external thread of the connecting rod 51 near the limit end 52 is 18mm, and the depth is 35mm; the diameter of the external thread near the side of the joint 53 is 18mm, and the depth is 55mm.

[0052] The length of the joint 53 without threads is 45mm, the second large end plate 59 is 5mm high and 50mm in diameter; the second small end plate 61 is 5mm high and 30mm in diameter; the height of the second connecting cone 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 diameter of the internally threaded nut 54 is 18 mm, the height is 10 mm, and the wall thickness is 12 mm.

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

[0055] S1: During production in the factory, firstly, a UHPC sheet with convex points 41 is cast in a mold with concave points, and then the UHPC is leveled and finished; after the outer surface layer 40 reaches the UHPC hoisting strength, the outer surface layer 40 is turned over by a mechanical mold turning machine.

[0056] S2: Lay the prefabricated UHPC sheet in the mold of the outer leaf precast concrete slab 30 , tie the third steel mesh 33 above the UHPC sheet, and pour ordinary concrete to a specified thickness to form the outer leaf precast concrete slab 30 .

[0057] S3: When the cement of the outer leaf precast concrete slab 30 is not yet completely dry, the first large end plate 55 and part of the first connecting cone 56 in the limiting end 52 of the connecting piece 50 are placed into the cement of the outer leaf precast concrete slab 30, and then the nut 54 and the connecting piece rod 51 are connected in sequence, and then the insulation layer 20 is arranged layer by layer on the outer leaf precast concrete slab 30, and the holes on the insulation layer 20 match the position of the connecting piece 50, and the connecting piece 50 is arranged in the holes of the insulation layer 20, and then the nut 54 with internal thread and the joint 53 are respectively connected, and then the joint 21 between the insulation layer 20 and the insulation layer 20 and the gap between the insulation layer 20 and the connecting piece 50 are bonded with tape or filled with foam glue.

[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, 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: When the sandwich insulation shear wall is cured to 75% of the design strength, it is transported to the construction site, hoisted to the designated location, 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 connected by the loop lap joint of the U-shaped rib 14 and the post-cast UHPC18 concrete; the insulation layer 20 is arranged at the connection of the insulation layer 20, and the insulation layer 20 is arranged continuously; the connection of the outer leaf precast concrete slab 30 is sealed with a crack-resistant material composited with a cement-based material and a toughening material.

[0060] S6: Remove the temporary support members and install other prefabricated concrete sandwich insulation shear wall modules 100.

[0061] Functions and Effects of the Embodiments

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

[0063] The present invention applies UHPC to connect the upper and lower precast concrete sandwich insulation shear walls, which has the advantages of good performance, convenient construction and less on-site wet work.

[0064] The convex points on the surface of the UHPC sheet can increase the interface bonding with the outer leaf precast concrete slab after being bonded to the outer leaf precast concrete slab.

[0065] Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A prefabricated concrete sandwich insulation shear wall module, characterized in that: include: The inner leaf precast concrete slab has a plurality of vertical U-shaped bars extending outwards at the upper and lower ends respectively reserved for overlapping and assembling with adjacent precast concrete sandwich insulation shear wall modules, and the inner leaf precast concrete slab is provided with a first steel mesh and a second steel mesh; The thermal insulation layer is arranged on the outer side of the inner leaf precast concrete slab, and a plurality of holes are arranged in the thermal insulation layer; An outer leaf precast concrete slab is arranged outside the thermal insulation layer, and a third steel mesh is arranged inside the outer leaf precast concrete slab; An outer finishing layer is arranged on the outer side of the outer leaf precast concrete slab; and A plurality of connectors are arranged at the holes of the insulation layer and are used to connect the outer leaf precast concrete slab, the insulation layer and the inner leaf precast concrete slab. The connectors include a connector rod arranged in the insulation layer, one end of the connector rod is connected to a limiting end arranged in the outer leaf precast concrete slab, and the other end of the connector rod is connected to a joint arranged in the inner leaf precast concrete slab.

2. The precast concrete sandwich insulation shear wall module according to claim 1 is characterized in that: in, 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 insulation shear wall module according to claim 2 is characterized in that: in, 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 insulation shear wall module according to claim 1 is characterized in that: in, The connecting rod is threadedly connected to the limiting end, and a nut is provided at the connection. The connecting rod is threadedly connected to the joint, and a nut is provided at the connection.

5. The precast concrete sandwich insulation shear wall according to claim 4 is characterized in that: in, 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 circular ring cylinder arranged on the outside of the core rod, and a plurality of protruding semicircular balls are arranged on the outside of the thin-walled circular ring cylinder, 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.

6. The precast concrete sandwich insulation shear wall module according to claim 1, characterized in that: in, The outer facing layer adopts a prefabricated UHPC thin plate with convex points, which is used to increase the shear force between the outer facing layer and the outer leaf prefabricated concrete slab.

7. The precast concrete sandwich insulation shear wall module according to claim 1, characterized in that: in, The material used for the thermal insulation layer is at least one of an extruded polystyrene foam board, a polyurethane foam board, a phenolic board, a polyurethane board, a vacuum insulation board, a real gold board and an aerogel.

8. The precast concrete sandwich insulation shear wall according to claim 1, characterized in that: The precast concrete sandwich insulation shear wall comprises a plurality of precast concrete sandwich insulation shear wall modules, and the precast concrete sandwich insulation shear wall modules are overlapped, cast and assembled in a vertical direction to form a precast concrete sandwich insulation shear wall.

9. The precast concrete sandwich insulation shear wall according to claim 8, characterized in that: in, The U-shaped bars between the two adjacent prefabricated concrete sandwich insulation shear wall modules form a cavity at the overlap, and horizontal reinforcing steel bars are arranged at the four corners of the cavity.

10. A method for assembling a precast concrete sandwich insulation shear wall as claimed in claim 9, characterized in that: The assembly method is as follows: S1, transport the precast concrete sandwich insulation shear wall module to the construction site, hoist it to the designated location, install temporary supports, adjust the position, elevation and verticality of the shear wall, and then overlap the vertical U-shaped reinforcement with the vertical U-shaped reinforcement of the adjacent precast concrete sandwich insulation shear wall module, and then pour UHPC concrete to connect them to achieve vertical assembly; S2, by arranging insulation layers of the same material at the joints of the insulation layers, the insulation layers are arranged continuously, and the joints of the outer leaf precast concrete panels are sealed with anti-cracking materials composited with cement-based materials and toughening materials to achieve horizontal assembly.

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