A prefabricated monolithic steel plate composite shear wall and its assembly construction method

Abstract

This invention relates to an assembled monolithic steel plate composite shear wall and its assembly construction method. The steel plate composite shear wall includes multiple outer steel plates spliced ​​sequentially from bottom to top. Concrete filler is vertically inserted into the outer steel plates, with at least one end narrowing to form a recessed portion and a protruding portion. The recessed portion is located inside the outer steel plate, with a cavity between it and the outer steel plate. The protruding portion is located outside the outer steel plate. In two adjacent outer steel plates, the protruding portion of each inner steel plate extends into the cavity of the other outer steel plate and interlocks with the recessed portion of the other inner steel plate. The recessed portion, the protruding portion, and the sidewalls of the outer steel plates are respectively provided with corresponding through holes and connected by high-strength bolts. This invention eliminates the need for on-site welding and concrete pouring, reducing construction difficulty.

Description

Technical Field

[0001] This invention relates to the field of building structure technology, specifically to an assembled monolithic steel plate composite shear wall and its assembly construction method. Background Technology

[0002] Shear walls, also known as wind-resistant walls, earthquake-resistant walls, or structural walls, are part of the vertical structural members of a building. They are walls that primarily bear horizontal and vertical loads caused by wind loads or earthquakes, preventing structural shear failure.

[0003] Steel plate composite shear walls consist of two parts: a wall body formed by welding steel plates on both sides in the width direction, and an inner wall formed by pouring concrete into a cavity enclosed by the steel plates. This gives the shear wall the characteristics of both steel plates and concrete. It offers advantages such as good seismic performance, saving building space, high lateral stiffness, strong energy dissipation capacity, and good ductility. Prefabricated monolithic steel plate composite shear walls involve fabricating components in a factory, assembling them on-site by welding, and sometimes reinforcing the joints with concrete. Finally, the shear wall is formed through curing.

[0004] Currently, the most commonly used prefabricated steel plate composite shear walls are various forms of multi-cavity steel plate composite shear walls. Two common methods are used to handle the connection nodes: one is to weld the outer steel plates at the node; however, welding the internal stiffening plates of the shear wall is difficult, resulting in discontinuity and weak strength at the node. The second method is to use concrete grouting in the connection node area to improve strength. Although prefabricated steel plate composite shear walls reduce the need for on-site formwork, they still require a significant amount of on-site welding and concrete pouring work, reducing construction efficiency, increasing wet work, and also bringing problems related to construction quality, labor costs, and environmental impact.

[0005] Existing technology CN111980219A describes a prefabricated monolithic steel plate composite shear wall, which improves construction efficiency and reduces concrete pouring work. However, the vertical connection nodes of the shear wall use post-grouting to bear and transfer the internal forces between the walls, still requiring on-site concrete pouring. Existing technology CN208088587U describes a prefabricated steel plate composite shear wall, which has advantages such as convenient construction, small amount of welding, and good stress performance, but still retains some welding work.

[0006] The grouting of concrete and welding of the outer steel plates at construction site nodes require highly skilled workers, but also reduce construction efficiency, increase costs, and are prone to problems such as weak welds, incomplete grouting, and compromised construction quality, thus introducing uncertainty into the safety of the building structure. Therefore, it is necessary to provide a prefabricated monolithic steel plate composite shear wall and its assembly construction method that completely eliminates the need for on-site welding and concrete pouring to solve the above-mentioned technical problems. Summary of the Invention

[0007] To address the problems existing in the prior art, the purpose of this invention is to provide an assembled monolithic steel plate composite shear wall and an assembly construction method that can complete the assembly without on-site welding and concrete pouring, thereby reducing construction difficulty.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] An assembled monolithic steel plate composite shear wall includes multiple wall cladding steel plates spliced ​​sequentially from bottom to top;

[0010] The wall is vertically inserted into the steel plate cladding and is filled with concrete. The concrete filler narrows at at least one end and forms a recessed part and a protruding part in sequence. The recessed part is located inside the steel plate cladding and a cavity is left between the recessed part and the steel plate cladding. The protruding part is located outside the steel plate cladding.

[0011] In the two adjacent steel plates for wall cladding, the protruding part of the concrete filling inside each wall extends into the cavity of the other steel plate for wall cladding, and is staggered and interlocked with the retracted part of the concrete filling inside the other wall; the retracted part, the protruding part and the side wall of the steel plate for wall cladding are respectively provided with corresponding through holes and are connected by high-strength bolts.

[0012] Furthermore, the outer shear wall steel plate includes a second shear wall steel plate located in the middle, end column steel plates located at both ends, and a first shear wall steel plate located between the end column steel plate and the second shear wall steel plate;

[0013] The thickness of the end column steel plate is greater than that of the first shear wall steel plate and the second shear wall steel plate. The three are arranged horizontally and have the same height, with their outer surfaces on the same plane.

[0014] The concrete filling inside the walls includes the concrete filling inside the columns, the concrete filling inside the first shear wall, and the concrete filling inside the second shear wall.

[0015] The steel plates of the end columns are filled with concrete, the steel plates of the first shear wall are filled with concrete, and the steel plates of the second shear wall are filled with concrete.

[0016] Within the same steel cladding plate of the wall, the protruding portions of the concrete fillings within the columns, the first shear wall, and the second shear wall are staggered. This structure increases the strength of the joint connections, ensures uniform stress distribution within the concrete fillings of the walls, enhances structural stability, and improves the overturning resistance during the hoisting and assembly phases as well as during the wall's service life.

[0017] Furthermore, the cross-sections of the first shear wall steel plate and the second shear wall steel plate are C-shaped, with the cross-sectional structure of the second shear wall steel plate being larger than that of the first shear wall steel plate.

[0018] Furthermore, it also includes a reinforcing plate, which covers the two adjacent wall cladding steel plates spliced ​​together, and its height is greater than the sum of the heights of the recessed part and the protruding part. The reinforcing plate is provided with through holes and is connected to the wall cladding steel plate, the recessed part and the protruding part by high-strength bolts.

[0019] Furthermore, the reinforcing plates include transverse reinforcing plates and longitudinal reinforcing plates. The transverse reinforcing plates are installed on the front and rear sides of the outer steel plate of the wall. The transverse reinforcing plates are equipped with transverse high-strength bolts and nuts. The transverse reinforcing plates are fixedly connected to the outer surface of the outer steel plate of the wall by transverse high-strength bolts. Bolt washers are provided between the transverse reinforcing plates and the transverse high-strength bolts, and between the transverse reinforcing plates and the nuts. The longitudinal reinforcing plates are installed on the left and right sides of the outer steel plate of the wall. The longitudinal reinforcing plates are equipped with longitudinal high-strength bolts and nuts. The longitudinal reinforcing plates are fixedly connected to the outer surface of the outer steel plate of the wall by longitudinal high-strength bolts. Bolt washers are provided between the longitudinal reinforcing plates and the longitudinal high-strength bolts, and between the longitudinal reinforcing plates and the nuts, to ensure tight bolt connections and to ensure that the steel plate joints are flat and seamless.

[0020] Furthermore, the through holes in the recessed part, the protruding part, the outer steel plate of the wall, and the reinforcing plate all include transverse through holes and longitudinal through holes.

[0021] Furthermore, the recessed portion and the protruding portion are integrally formed sheet-like structures.

[0022] Furthermore, the outer steel plate and the inner concrete are combined to form the bottom composite shear wall, the middle composite shear wall, and the top composite shear wall, respectively. The bottom composite shear wall and the top composite shear wall have the same structure, with a sheet-like structure at one end of the inner concrete and the other end flush with the outer steel plate; the middle composite shear wall has sheet-like structures at both ends.

[0023] The bottom composite shear wall, the middle composite shear wall, and the top composite shear wall are spliced ​​together sequentially from bottom to top.

[0024] Furthermore, the sheet-like structures at both ends of the central composite shear wall are staggered.

[0025] Furthermore, the height of the middle composite shear wall is at least the height of two stories of the building, and the height of the bottom composite shear wall and the top composite shear wall is at least the height of one and a half stories of the building.

[0026] Furthermore, the cross-sectional shape of the assembled central composite shear wall can be straight, L-shaped, T-shaped, or cross-shaped. Different cross-sectional shapes are selected depending on the location of the shear wall in the building.

[0027] The assembly and construction method for a prefabricated monolithic steel plate composite shear wall, as described above, includes the following steps:

[0028] Concrete was inserted into multiple steel plates cladding the exterior walls;

[0029] Multiple steel plates are spliced ​​together from bottom to top to form the outer wall cladding.

[0030] In the two adjacent steel plates for wall cladding, the protruding part of the concrete filling inside each wall extends into the cavity of the other steel plate for wall cladding, and is staggered and interlocked with the retracted part of the concrete filling inside the other wall. The retracted part, the protruding part, and the side wall of the steel plate for wall cladding are respectively provided with corresponding through holes and connected by high-strength bolts.

[0031] Furthermore, multiple outer steel plates for the wall are spliced ​​together sequentially from bottom to top, including:

[0032] The bottom composite shear wall, the middle composite shear wall, and the top composite shear wall are formed by combining the outer steel plate and the inner concrete.

[0033] Using high-strength bolts that pass through the concrete filling inside the wall and the steel plate covering the outside of the wall as lifting points, the middle composite shear wall is lifted and installed on the bottom composite shear wall, and then the top composite shear wall is lifted and installed on the middle composite shear wall.

[0034] Furthermore, the step of sequentially splicing multiple outer steel plates of the wall from bottom to top also includes,

[0035] After hoisting and installing the middle composite shear wall onto the bottom composite shear wall, steel beams are welded to the end column steel plates, and floor slabs are overlapped on the steel beams, ensuring the shear wall connection is located in the exact center of the floor. Similarly, steel beams and floor slabs are installed when splicing middle composite shear walls to each other or to the top composite shear wall. According to the inflection point method, when the shear wall connection is located in the middle of the floor, the bending moment at the middle of the floor is minimal (zero), resulting in minimal stress. Therefore, placing the relatively weak connection node at this location is safer.

[0036] In summary, the present invention has the following advantages:

[0037] In use, multiple external steel cladding plates can be prefabricated in the factory, and the internal wall filling concrete can be prefabricated according to the external steel cladding plates. The prefabricated external steel cladding plates and internal wall filling concrete are then transported to the construction site for assembly. During assembly, the internal wall filling concrete is vertically inserted into each external steel cladding plate and fixed with high-strength bolts. Then, multiple external steel cladding plates are spliced ​​sequentially from bottom to top, so that the protruding part of the internal wall filling concrete in two adjacent spliced ​​plates extends into the cavity of another external steel cladding plate, and interlocks with the retracted part of the other internal wall filling concrete. The retracted and protruding parts, as well as the side walls of the external steel cladding plates, are respectively provided with corresponding through holes and connected by high-strength bolts, thus completing the assembly construction. Assembly can be completed without on-site welding and concrete pouring, reducing construction difficulty. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the connection of the central composite shear wall of the present invention;

[0039] Figure 2 This is a structural schematic diagram of the central composite shear wall of the present invention;

[0040] Figure 3 A structural diagram showing the steel plate cladding on the outside of the wall and the concrete filling inside;

[0041] Figure 4 This is a structural sectional view of the central composite shear wall;

[0042] Figure 5 A simplified structural prefabrication diagram of the central composite shear wall;

[0043] Figure 6 Exploded view of the connection of the central composite shear wall;

[0044] Figure 7 This is a partial exploded view of the connection of the central composite shear wall;

[0045] Figure 8 This is a top view of the central composite shear wall structure.

[0046] Figure 9 This is a diagram showing the bolt lap joint construction of the central composite shear wall;

[0047] Figure 10 This is a schematic diagram of the assembly of the prefabricated integral steel plate composite shear wall of the present invention;

[0048] Figure 11 A flowchart illustrating the prefabrication process of steel cladding on the exterior of a wall;

[0049] Figure 12 A flowchart of the prefabrication process for filling concrete inside the wall;

[0050] Figure 13This is a flowchart illustrating the on-site assembly process of the prefabricated integral steel plate composite shear wall of the present invention.

[0051] In the picture:

[0052] 1-Transverse high-strength bolt; 2-Bolt washer; 3-Transverse reinforcing plate; 4-Outer wall steel plate; 5-Inner wall concrete filling; 6-Longitudinal high-strength bolt; 7-Longitudinal reinforcing plate; 8-Nut; 9-Longitudinal through hole; 10-Transverse through hole; 11-End column steel plate; 12-First shear wall steel plate; 13-Second shear wall steel plate; 14-Inner column concrete filling; 15-Inner first shear wall concrete filling; 16-Inner second shear wall concrete filling; 20-Lifting rope; 21-Inner column concrete filling formwork; 22-Inner first shear wall concrete filling formwork; 23-Inner second shear wall concrete filling formwork; 24-Top combined shear wall; 25-Middle combined shear wall; 26-Bottom combined shear wall; 27-Steel beam; 28-Floor slab. Detailed Implementation

[0053] The present invention will now be described in further detail.

[0054] like Figure 1 As shown, an assembled integral steel plate composite shear wall includes multiple wall cladding steel plates 4 with cavities, which are spliced ​​from bottom to top.

[0055] A wall-filled concrete 5 is vertically inserted into the cavity of the outer steel plate 4. The wall-filled concrete 5 narrows at at least one end and forms a recessed part and a protruding part in sequence. The recessed part is located inside the outer steel plate 4, and a cavity is left between the recessed part and the outer steel plate 4. The protruding part is located outside the outer steel plate 4. The recessed part and the protruding part are integrally formed sheet structures.

[0056] In the two adjacent steel plates 4 for wall cladding, the protruding part of the concrete filling 5 inside each wall extends into the cavity of the other steel plate 4 for wall cladding, and is staggered and interlocked with the retracted part of the concrete filling 5 inside the other wall; the retracted part, the protruding part and the side wall of the steel plate 4 for wall cladding are respectively provided with corresponding through holes and are connected by high-strength bolts.

[0057] like Figure 2 As shown, the outer shear wall steel plate 4 includes a second shear wall steel plate 13 located in the middle, end column steel plates 11 located at both ends, and a first shear wall steel plate 12 located between the end column steel plate 11 and the second shear wall steel plate 13; the thickness of the end column steel plate 11 is greater than the thickness of the first shear wall steel plate 12 and the second shear wall steel plate 13, the three are arranged horizontally and have the same height, and their outer surfaces are on the same plane; the cross-sections of the first shear wall steel plate 12 and the second shear wall steel plate 13 are C-shaped structures, and the cross-sectional structure of the second shear wall steel plate 13 is larger than the cross-sectional structure of the first shear wall steel plate 12.

[0058] like Figures 3-5As shown, the concrete filling 5 inside the wall includes concrete filling 14 inside the column, concrete filling 15 inside the first shear wall, and concrete filling 16 inside the second shear wall; the end column steel plate 11 is filled with concrete filling 14 inside the column, the first shear wall steel plate 12 is filled with concrete filling 15 inside the first shear wall, and the second shear wall steel plate 13 is filled with concrete filling 16 inside the second shear wall.

[0059] Within the same wall cladding steel plate 4, the protruding parts of the columns filled with concrete 14, the first shear wall filled with concrete 15, and the second shear wall filled with concrete 16 are staggered.

[0060] like Figures 6-9 As shown, it also includes a reinforcing plate, which covers two adjacent wall cladding steel plates 4. The height of the reinforcing plate is greater than the sum of the heights of the recessed part and the protruding part. The reinforcing plate has through holes and is connected to the wall cladding steel plate 4, the recessed part, and the protruding part by high-strength bolts. The through holes in the recessed part, the protruding part, the wall cladding steel plate 4, and the reinforcing plate all include transverse through holes 10 and longitudinal through holes 9. The reinforcing plates include transverse reinforcing plates 3 and longitudinal reinforcing plates 7. The transverse reinforcing plates 3 are installed on the front and rear sides of the outer steel plate 4. The transverse reinforcing plates 3 are equipped with transverse high-strength bolts 1 and nuts 8. The transverse reinforcing plates 3 are fixedly connected to the outer surface of the outer steel plate 4 by the transverse high-strength bolts 1. Bolt washers 2 are provided between the transverse reinforcing plates 3 and the transverse high-strength bolts 1, and between the transverse reinforcing plates 3 and the nuts 8. The longitudinal reinforcing plates 7 are installed on the left and right sides of the outer steel plate 4. The longitudinal reinforcing plates 7 are equipped with longitudinal high-strength bolts 6 and nuts 8. The longitudinal reinforcing plates 7 are fixedly connected to the outer surface of the outer steel plate 4 by the longitudinal high-strength bolts 6. Bolt washers 2 are provided between the longitudinal reinforcing plates 7 and the longitudinal high-strength bolts 6, and between the longitudinal reinforcing plates 7 and the nuts 8 to ensure tight bolt connections and to ensure that the steel plate joints are flat and seamless.

[0061] like Figure 10 As shown, the outer steel plate 4 and the inner concrete filling 5 are combined to form the bottom composite shear wall 26, the middle composite shear wall 25, and the top composite shear wall 24. The bottom composite shear wall 26 and the top composite shear wall 24 have the same structure but opposite directions. One end of the inner concrete filling 5 has a sheet-like structure, and the other end is flush with the outer steel plate 4. The middle composite shear wall 25 has sheet-like structures at both ends. The bottom composite shear wall 26, the middle composite shear wall 25, and the top composite shear wall 24 are assembled sequentially from bottom to top. The sheet-like structures at both ends of the middle composite shear wall 25 are staggered. The height of the middle composite shear wall 25 is at least two stories high, and the height of the bottom composite shear wall 26 and the top composite shear wall 24 is at least one and a half stories high. The cross-sectional shape of the assembled middle composite shear wall 25 can be straight, L-shaped, T-shaped, or cross-shaped. Different cross-sectional shapes are selected according to the different locations of the shear walls in the building.

[0062] The assembly and construction method for a prefabricated monolithic steel plate composite shear wall, as described above, includes the following steps:

[0063] like Figure 11 and Figure 12 As shown, concrete 5 is inserted into multiple outer steel plates 4. The specific operation is as follows: First, the multiple outer steel plates 4 are welded together, specifically, the end column steel plate 11 is welded to the first shear wall steel plate 12. Next, the second shear wall steel plate 13 is welded onto the first shear wall steel plate 12. Then, different numbers of second shear wall steel plates 13 are welded according to the length of the shear wall. Finally, the end column steel plate 11 is welded after sealing with the first shear wall steel plate 12. The cavities of the outer steel plates 4 also serve as formwork for the main concrete structure inside the wall. After the formwork is connected to the connecting area and the concrete is poured, the concrete inside the wall and the concrete in the connecting area form a unified whole. Concrete lining templates 21, 22, and 23 are erected sequentially within the different cavities formed by the end column steel plate 11, the first shear wall steel plate 12, and the second shear wall steel plate 13. Then, concrete is poured into the concrete formwork and cured at the specified temperature and humidity for the specified time to form the column-filled concrete 14, the first shear wall-filled concrete 15, and the second shear wall-filled concrete 16. The column-filled concrete formwork 21, the first shear wall-filled concrete formwork 22, and the second shear wall-filled concrete formwork 23 are then removed to form a complete prefabricated monolithic steel plate composite shear wall.

[0064] Multiple steel plates for cladding the wall are spliced ​​together from bottom to top;

[0065] Among them, in the two adjacent wall-cladding steel plates 4, the protruding part of each wall-filled concrete 5 extends into the cavity of the other wall-cladding steel plate 4, and is staggered and interlocked with the retracted part of the other wall-filled concrete 5. The retracted part, the protruding part, and the side wall of the wall-cladding steel plate 4 are respectively provided with corresponding through holes and connected by high-strength bolts.

[0066] Multiple outer steel plates 4 are spliced ​​together from bottom to top, including

[0067] The bottom composite shear wall 26, the middle composite shear wall 25, and the top composite shear wall 24 are formed by combining the outer steel plate 4 and the inner concrete 5 respectively.

[0068] like Figure 13As shown, using high-strength bolts passing through the concrete filling 5 inside the wall and the steel plate 4 outside the wall as lifting points, the bottom composite shear wall 26 is lifted and installed on the structural foundation using lifting ropes 20. Then, the middle composite shear wall 25 is lifted and installed on the bottom composite shear wall 26. The middle composite shear wall 25 is fixedly connected to the bottom composite shear wall 26 using transverse reinforcing plates 3, transverse high-strength bolts 1, longitudinal reinforcing plates 7, and longitudinal high-strength bolts 6. Then, according to the height requirements of the shear walls, multiple middle composite shear walls 25 are stacked and installed on the bottom composite shear wall 26. Finally, the top composite shear wall 24 is lifted and installed on the middle composite shear wall 25.

[0069] The step of assembling multiple outer steel plates of the wall from bottom to top also includes,

[0070] like Figure 10 As shown, after the middle composite shear wall 25 is lifted and installed on the bottom composite shear wall 26, the steel beam 27 is welded to the end column steel plate 11, and the floor slab 28 is overlapped on the steel beam 27, so that the shear wall connection is located in the middle of the floor. In addition, the steel beam 27 and floor slab 28 are installed in the same way when splicing the middle composite shear wall 25 to the middle composite shear wall 25 and splicing the middle composite shear wall 25 to the top composite shear wall 24.

[0071] The main function of this invention is as follows: In use, multiple external wall cladding steel plates 4 can be prefabricated in a factory, and internal wall filling concrete 5 can be prefabricated based on the external wall cladding steel plates 4. The prefabricated external wall cladding steel plates 4 and internal wall filling concrete 5 are then transported to the construction site for assembly. During assembly, the internal wall filling concrete 5 is inserted into each external wall cladding steel plate 4 and fixed with bolts. Then, multiple external wall cladding steel plates 4 are sequentially spliced ​​from bottom to top, such that in two adjacent spliced ​​external wall cladding steel plates 4, the protruding part of each internal wall filling concrete 5 extends into the cavity of another external wall cladding steel plate 4, and interlocks with the retracted part of the other internal wall filling concrete 5. The retracted part, the protruding part, and the side wall of the external wall cladding steel plate 4 are respectively provided with corresponding through holes and connected by high-strength bolts, thus completing the assembly construction. Assembly can be completed without on-site welding and concrete pouring, reducing construction difficulty.

[0072] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A prefabricated integral steel plate composite shear wall, characterized in that: This includes multiple steel plates cladding the exterior of the wall, which are assembled sequentially from bottom to top. The wall is vertically inserted into the steel plate cladding, and the concrete filling is narrowed at at least one end and forms a recessed part and a protruding part in sequence. The recessed part is located inside the steel plate cladding, and a cavity is left between the recessed part and the steel plate cladding. The protruding part is located outside the steel plate cladding on the outside of the wall; In the two adjacent steel plates for wall cladding, the protruding part of the concrete filling inside each wall extends into the cavity of the other steel plate for wall cladding, and is staggered and interlocked with the retracted part of the concrete filling inside the other wall; the retracted part, the protruding part and the side wall of the steel plate for wall cladding are respectively provided with corresponding through holes and are connected by high-strength bolts.

2. The assembled monolithic steel plate composite shear wall according to claim 1, characterized in that: The outer shear wall steel plate includes a second shear wall steel plate located in the middle, end column steel plates located at both ends, and a first shear wall steel plate located between the end column steel plate and the second shear wall steel plate; The thickness of the end column steel plate is greater than that of the first shear wall steel plate and the second shear wall steel plate. The three are arranged horizontally and have the same height, with their outer surfaces on the same plane. The concrete filling inside the walls includes the concrete filling inside the columns, the concrete filling inside the first shear wall, and the concrete filling inside the second shear wall. The steel plates of the end columns are filled with concrete, the steel plates of the first shear wall are filled with concrete, and the steel plates of the second shear wall are filled with concrete. Within the same steel cladding plate of the wall, the protruding parts filled with concrete in the columns, the first shear wall, and the second shear wall are staggered.

3. The assembled monolithic steel plate composite shear wall according to claim 2, characterized in that: It also includes a reinforcing plate, which covers the two adjacent wall cladding steel plates spliced ​​together. Its height is greater than the sum of the heights of the recessed part and the protruding part. The reinforcing plate has through holes and is connected to the wall cladding steel plate, the recessed part and the protruding part by high-strength bolts.

4. The assembled monolithic steel plate composite shear wall according to claim 3, characterized in that: The through holes in the recessed part, the protruding part, the outer steel plate of the wall and the reinforcing plate all include transverse through holes and longitudinal through holes.

5. A prefabricated integral steel plate composite shear wall according to claim 4, characterized in that: The recessed part and the protruding part are integrally formed sheet-like structures.

6. A prefabricated integral steel plate composite shear wall according to claim 5, characterized in that: The outer steel plate and the inner concrete are combined to form the bottom composite shear wall, the middle composite shear wall and the top composite shear wall. The bottom composite shear wall and the top composite shear wall have the same structure. One end of the inner concrete is provided with a sheet-like structure and the other end is flush with the outer steel plate. The middle composite shear wall has sheet-like structures at both ends. The bottom composite shear wall, the middle composite shear wall, and the top composite shear wall are spliced ​​together sequentially from bottom to top.

7. A prefabricated integral steel plate composite shear wall according to claim 6, characterized in that: The sheet-like structures at both ends of the central composite shear wall are staggered.

8. A prefabricated integral steel plate composite shear wall according to claim 7, characterized in that: The height of the middle composite shear wall shall be at least two stories high, and the height of the bottom and top composite shear walls shall be at least one and a half stories high.

9. The assembly construction method for a prefabricated monolithic steel plate composite shear wall as described in any one of claims 1-8, characterized in that: include, Concrete was inserted into multiple steel plates cladding the exterior walls; Multiple steel plates are spliced ​​together from bottom to top to form the outer wall cladding. In the two adjacent steel plates for wall cladding, the protruding part of the concrete filling inside each wall extends into the cavity of the other steel plate for wall cladding, and is staggered and interlocked with the retracted part of the concrete filling inside the other wall. The retracted part, the protruding part, and the side wall of the steel plate for wall cladding are respectively provided with corresponding through holes and connected by high-strength bolts.

10. The assembly construction method for a prefabricated integral steel plate composite shear wall according to claim 9, characterized in that: Multiple outer steel plates for wall cladding are assembled sequentially from bottom to top, including: The bottom composite shear wall, the middle composite shear wall, and the top composite shear wall are formed by combining the outer steel plate and the inner concrete. High-strength bolts are passed horizontally through the concrete filling inside the wall and the steel plate covering the outside of the wall. Using these high-strength bolts as lifting points, the middle composite shear wall is lifted and installed on the bottom composite shear wall. Then, the top composite shear wall is lifted and installed on the middle composite shear wall.

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