A composite spiral stirrup restrained concrete shear wall structure and its construction method

Abstract

The invention discloses a composite spiral stirrup restrained concrete shear wall structure and a construction method thereof, comprising continuous composite spiral stirrups, wherein continuous composite spiral horizontal distribution bars are uniformly distributed in concrete; on the same horizontal plane, adjacent continuous composite spiral horizontal distribution bars are fixedly connected together; the continuous composite spiral stirrups are symmetrically arranged at the two end restraining edge components of the concrete; longitudinal bars are uniformly arranged in the overlapping area of ​​the continuous composite spiral stirrups and the continuous composite spiral horizontal distribution bars, and vertical distribution bars are uniformly arranged in the continuous composite spiral horizontal distribution bars; the invention arranges the continuous composite spiral stirrups at the edge of the wall, which can effectively restrain the core concrete, increase the effective restraining area of ​​the concrete, and improve the compressive strength and ultimate compressive strain of the concrete; the continuous composite spiral horizontal distribution bars and the vertical distribution bars form a stable steel skeleton, enhance the overall stability of the wall body, restrain the lateral deformation of the wall concrete, and improve the seismic performance of the wall.

Description

Technical Field

[0001] The invention relates to the technical field of shear wall structures, and in particular to a composite spiral stirrup-constrained concrete shear wall structure and a construction method thereof. Background Art

[0002] The shear walls at the bottom of high-rise structures are subject to large axial forces, bending moments and shear forces. Under strong earthquakes, shear walls with high axial compression ratios are prone to compressive shear or crush failure, which significantly reduces the strength and energy consumption of their components and makes them difficult to repair after an earthquake. How to improve the seismic performance of shear walls is one of the key issues in the seismic design of high-rise structures.

[0003] At present, in order to solve the above problems, high-strength concrete materials are often used, and spiral stirrups are arranged in shear walls to form a spiral stirrup-constrained concrete shear wall structure system; but high-strength concrete itself is brittle and has poor ductility; using ordinary spiral stirrups in the shear wall constraint edge components can improve the compressive strength of concrete, but when the constraint edge components are long and there are more longitudinal bars, the use of ordinary spiral stirrups will cause insufficient constraint and will not effectively constrain the core concrete; the wall constraint is not enough, and the shear wall cracks are large, the bottom is crushed, and other problems are prone to occur, and the purpose of effectively saving costs and energy cannot be achieved. Summary of the invention

[0004] In view of the technical problems existing in the prior art, the purpose of the present invention is to provide a composite spiral stirrup restrained concrete shear wall structure and a construction method thereof, so as to solve the technical problems that when spiral stirrups are configured in the existing high-strength concrete shear wall, the core concrete cannot be effectively restrained, the wall is not sufficiently restrained, and large cracks in the shear wall and bottom collapse are prone to occur.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The present invention provides a composite spiral stirrup restrained concrete shear wall structure, comprising continuous composite spiral stirrups, continuous composite spiral horizontal distribution bars, longitudinal bars, vertical distribution bars and concrete, wherein the continuous composite spiral horizontal distribution bars are evenly distributed in the concrete; on the same horizontal plane, adjacent continuous composite spiral horizontal distribution bars are fixedly connected together; the continuous composite spiral stirrups are symmetrically arranged at the two end restraining edge members of the concrete; longitudinal bars are evenly arranged in the overlapping area between the continuous composite spiral stirrups and the continuous composite spiral horizontal distribution bars, and vertical distribution bars are evenly arranged in the continuous composite spiral horizontal distribution bars.

[0007] Furthermore, the longitudinal reinforcement is tied and fixed with the continuous composite spiral stirrups; and the vertical distribution reinforcement is tied and fixed with the continuous composite spiral horizontal distribution reinforcement.

[0008] Furthermore, the continuous composite spiral stirrups include a plurality of stirrup units, all of which are rectangular structures; the plurality of stirrup units are spirally connected end to end in sequence, and the vertical spacing between adjacent stirrup units is 60-100 mm.

[0009] Furthermore, the continuous composite spiral horizontal distribution reinforcement includes a plurality of distribution reinforcement units, and the plurality of distribution reinforcement units are all rectangular structures; two upper and lower adjacent distribution reinforcement units are connected in a spiral shape in sequence, and the vertical spacing between adjacent distribution reinforcement units is 80-150mm.

[0010] Furthermore, the continuous composite spiral stirrups and the continuous composite spiral horizontal distribution bars are made of high-strength steel bars with a thin diameter; the diameter of the high-strength steel bars is 4-6 mm, and the strength of the high-strength steel bars is not less than 800 MPa.

[0011] Furthermore, high-strength concrete is used, and the strength grade of the concrete is not less than C50.

[0012] Furthermore, the longitudinal reinforcement adopts steel bars with a strength not less than HRB400, and the vertical distribution reinforcement adopts HRB335 steel bars or HRB400 steel bars.

[0013] The present invention also provides a construction method of a composite spiral stirrup-constrained concrete shear wall structure, comprising the following steps:

[0014] Step 1: Make continuous composite spiral stirrups, continuous composite spiral horizontal distribution bars, longitudinal bars and vertical distribution bars, and process shear wall component formwork;

[0015] Step 2, evenly arranging continuous composite spiral horizontal distribution bars, setting continuous composite spiral stirrups at the edges of the concrete member, and fixing the continuous composite spiral stirrups to the continuous composite spiral horizontal distribution bars;

[0016] Step 3: Install the longitudinal reinforcement inside the continuous composite spiral stirrups, and install the vertical distribution reinforcement inside the continuous composite spiral horizontal distribution reinforcement to form a reinforcement skeleton;

[0017] Step 4: Install the formwork, pour concrete, and vibrate to compact it;

[0018] Step 5: Maintenance, removing the formwork, and obtaining the shear wall structure.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention provides a composite spiral stirrup restrained concrete shear wall structure. By arranging continuous composite spiral stirrups on the wall restraining edge components, the high-strength, close-fitting and continuous closed characteristics of the stirrups can be used to effectively restrain the core concrete, increase the effective restraining area of ​​the concrete, make the core concrete in a three-dimensional compressive state, and improve the ultimate compressive strength and ultimate compressive strain of the concrete; by evenly arranging continuous composite spiral horizontal distribution bars on the wall body, a stable steel skeleton can be formed with the vertical distribution bars, the use of tension bars can be reduced, the concrete pouring process is not easy to deform, and the overall stability of the wall body can be effectively enhanced, and the lateral deformation of the wall concrete can be limited; by overlapping and splicing the continuous composite spiral stirrups with the continuous composite spiral horizontal distribution bars at the wall edge, the connection between the wall body and the restraining edge components at both ends of the wall can be strengthened, which is conducive to the transfer of force, enhances the overall stability, and effectively improves the seismic performance of the wall.

[0021] Furthermore, the continuous composite spiral stirrups are tied and fixed to the longitudinal reinforcement to ensure the longitudinal spacing of the continuous composite spiral stirrups, forming a stable wall edge restraint steel skeleton, ensuring that during the concrete pouring and vibration process, the wall edge restraint steel skeleton does not deform and has high stability; the vertical distribution bars are tied and fixed to the continuous composite horizontal distribution bars, which can effectively ensure the longitudinal spacing of the continuous composite horizontal distribution bars, and at the same time play a pulling role on the vertical distribution bars, forming a stable wall steel skeleton, and ensuring the thickness of the poured concrete wall panels.

[0022] Furthermore, the continuous composite spiral stirrups use a number of stirrup units connected end to end in a spiral shape to form a continuous closed structure, which effectively enhances the restraining effect of the core concrete; there is no hook structure inside the continuous composite spiral stirrups, which effectively guarantees the construction quality of the concrete.

[0023] Furthermore, continuous composite spiral stirrups and continuous composite spiral horizontal distribution bars are made of fine-diameter high-strength steel bars. Under the same force, due to their high strength, fine-diameter steel bars are selected and the spacing between stirrups is increased, which can save the amount of steel bars, facilitate the processing and binding of steel bars in the project, save materials and improve construction efficiency, thereby increasing economic benefits; from the perspective of ecological energy, the use of high-strength steel bars can not only save the consumption of energy and resources such as coal, water, and ore, but also reduce the emission of harmful gases such as CO2 and SO2, thereby achieving the goal of energy conservation and emission reduction, and sustainable development.

[0024] Furthermore, high-strength concrete has the advantage of high compressive strength, and its components can bear large vertical loads, thereby reducing the cross-sectional size; by reducing the diameter of spiral stirrups and horizontal distribution bars and increasing the spacing, the stirrups can effectively restrain the concrete; under the action of vertical pressure, the core area concrete is in a three-way compression state, so that the core concrete has higher compressive strength and compression deformation capacity, and the destruction of the concrete shear wall is changed from brittle to plastic; at the same time, it can also improve the shear bearing capacity of reinforced concrete shear walls, making it easier to achieve the seismic design principle of "strong shear and weak bending" required by the seismic code.

[0025] The present invention also provides a construction method for a concrete shear wall structure constrained by composite spiral stirrups. Continuous composite spiral stirrups and continuous composite spiral horizontal distribution bars are embedded in the concrete shear wall. The restraining effect of the continuous composite spiral stirrups and the continuous composite spiral horizontal distribution bars is utilized to improve the bearing capacity of the concrete. The construction method is faster, simpler, and saves construction time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the planar structure of the composite spiral stirrup-confined concrete shear wall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure of the continuous composite spiral stirrup in the present invention;

[0028] Figure 3 It is a schematic diagram of the structure of the continuous composite spiral stirrup in the T-shaped or L-shaped cross-section wall of the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the continuous composite spiral stirrup in the present invention in the constrained edge member;

[0030] Figure 5 It is a hysteresis curve diagram of the composite spiral stirrup confined concrete shear wall structure described in the present invention.

[0031] Among them, 1 continuous composite spiral stirrup, 2 continuous composite spiral horizontal distribution reinforcement, 3 longitudinal reinforcement, 4 vertical distribution reinforcement, 5 concrete; 11 stirrup unit. DETAILED DESCRIPTION

[0032] The technical solutions of the embodiments of the present invention are explained and described below in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0033] As attached Figure 1-5As shown, the present invention provides a composite spiral stirrup restrained concrete shear wall structure, comprising continuous composite spiral stirrups 1, continuous composite spiral horizontal distribution bars 2, longitudinal bars 3, vertical distribution bars 4 and concrete 5; the continuous composite spiral horizontal distribution bars 2 are evenly distributed in the concrete 5, and the continuous composite spiral horizontal distribution bars 2 are continuously distributed along the cross-section of the concrete 5; on the same horizontal plane, adjacent continuous composite spiral horizontal distribution bars 2 are fixedly connected together; the continuous composite spiral stirrups 1 are symmetrically arranged at the two end restraining edge members of the concrete 5, and the continuous composite spiral stirrups 1 at the edge of the concrete 5 are tied and fixed to the continuous composite spiral horizontal distribution bars 2.

[0034] Longitudinal reinforcement 3 is evenly arranged in the overlapping area of ​​continuous composite spiral stirrups 1 and continuous composite spiral horizontal distribution reinforcement 2, and the longitudinal reinforcement 3 is arranged inside the continuous composite spiral stirrups 1, and the longitudinal reinforcement 3 is tied and fixed to the continuous composite spiral stirrups 1; vertical distribution reinforcement 4 is evenly arranged in the continuous composite spiral horizontal distribution reinforcement 2, and the vertical distribution reinforcement 4 is tied and fixed to the continuous composite continuous horizontal distribution reinforcement 2; preferably, the longitudinal reinforcement 3 adopts steel bars with a strength not less than HRB400, and the vertical distribution reinforcement 4 adopts HRB335 steel bars or HRB400 steel bars.

[0035] As attached Figure 2 As shown, the continuous composite spiral stirrups 1 include a plurality of stirrup units 11, and the plurality of stirrup units 11 are all rectangular structures; the plurality of stirrup units 11 are spirally connected in sequence from top to bottom, and the vertical spacing between adjacent stirrup units 11 is 60-100mm; the continuous composite spiral horizontal distribution reinforcement 2 includes a plurality of distribution reinforcement units, and the plurality of distribution reinforcement units are all rectangular structures; the plurality of distribution reinforcement units are spirally connected in sequence from top to bottom; preferably, the vertical spacing between adjacent distribution reinforcement units is 80-150mm.

[0036] As attached Figure 3 As shown, in a wall with an L-shaped or T-shaped cross-section, the continuous composite spiral stirrup 1 includes a plurality of stirrup units 11, and the plurality of stirrup units 11 are all rectangular structures; the plurality of stirrup units 11 are connected in sequence in a spiral shape from top to bottom, and the long axis directions of two adjacent stirrup units 11 are vertically arranged.

[0037] In the present invention, the continuous composite spiral stirrups 1 and the continuous composite spiral horizontal distribution bars 2 are both made of high-strength steel bars with a thin diameter; the diameter of the high-strength steel bars is 4-6 mm, and the strength of the high-strength steel bars is not less than 800 MPa; the concrete 5 is high-strength concrete, and the strength grade of the concrete is not less than C50.

[0038] The present invention also provides a construction method of a composite spiral stirrup-constrained concrete shear wall structure, which specifically comprises the following steps:

[0039] Step 1: Use a stirrup making machine to make continuous composite spiral stirrups 1, continuous composite spiral horizontal distribution reinforcements 2, longitudinal reinforcements 3 and vertical distribution reinforcements 4 as required; and process the shear wall component template;

[0040] Step 2, evenly arranging continuous composite spiral horizontal distribution bars, setting continuous composite spiral stirrups 1 at the edge of the concrete member; fixing the bottom ends of the continuous composite spiral stirrups 1 and the continuous composite spiral horizontal distribution bars 2 to the longitudinal bars of the foundation or the next layer of shear wall; and tying and fixing the continuous composite spiral stirrups 1 and the continuous composite spiral horizontal distribution bars 2 at the edge of the concrete member;

[0041] Step 3, install the longitudinal reinforcement 3 inside the continuous composite spiral stirrup 1, and install the vertical distribution reinforcement 4 inside the continuous composite spiral horizontal distribution reinforcement 2; stretch the continuous composite spiral stirrup 1 and the continuous composite spiral horizontal distribution reinforcement 2 to the upper end position of the shear wall component for fixing, and tie the longitudinal reinforcement 3 and the continuous composite spiral stirrup 1 at a spacing for precise positioning; tie the vertical distribution reinforcement and the continuous composite spiral horizontal distribution reinforcement 2 at a spacing for positioning to form a steel skeleton;

[0042] Step 4: Install the formwork, pour concrete, and vibrate to compact it;

[0043] Step 5: Maintenance, removing the formwork, and obtaining the shear wall structure.

[0044] The composite spiral stirrup restrained concrete shear wall structure and construction method thereof disclosed in the present invention adopts continuous composite spiral stirrups in the restrained edge components and continuous composite spiral horizontal distribution bars in the wall body, thereby effectively simplifying the placement and binding and fixing of the shear wall reinforcement bars; the continuous composite spiral stirrups and the continuous composite spiral horizontal distribution bars are respectively placed in the shear wall restrained edge components and the wall body, and the longitudinal reinforcement and the vertical distribution bars are respectively placed in the high-strength continuous composite spiral stirrups and the high-strength continuous composite spiral horizontal distribution bars; the continuous composite spiral reinforcement bars can be naturally stretched like a spring, and during the manufacturing process, they are bound and fixed with the longitudinal reinforcement or the vertical distribution bars according to the spacing required by the construction, and the construction is accurate and efficient; the continuous composite spiral stirrups and the continuous composite spiral horizontal distribution bars both adopt high-strength reinforcement bars, which can greatly save the amount of reinforcement bars, and the continuous composite spiral stirrups and the continuous composite spiral horizontal distribution bars formed in one stroke can solve the problems of complex nesting construction of ordinary composite stirrups, difficult vibration, and loose concrete pouring.

[0045] In the present invention, continuous composite spiral stirrups are arranged at the edge of the wall. The continuous composite spiral stirrups have the characteristics of high-strength, close-fitting, continuous closure, etc., which can effectively restrain the core concrete, increase the effective restraint area of ​​the concrete, make the core concrete in a three-way compression state, and improve the compressive strength and ultimate compressive strain of the concrete; reduce the stirrup spacing and improve its strength, which can effectively increase the concrete absorption energy, improve the shear performance of the wall, avoid the longitudinal reinforcement buckling and concrete collapse caused by the collapse or fracture of the stirrups in the plastic hinge area at the bottom of the wall, enhance the bearing capacity and deformation capacity of the wall, and effectively improve the seismic performance of the shear wall. At the same time, the amount of steel bars used is reduced, the purpose of energy conservation is achieved, and the effect of energy conservation and emission reduction is achieved; the continuous composite spiral horizontal distribution bars are evenly arranged on the wall body, which can form a more stable steel skeleton with the vertical distribution bars and reduce the use of tension bars, and are not easy to deform when pouring concrete; the high-strength close-matched spiral horizontal distribution bars can enhance the overall stability of the wall body, effectively restrain the lateral deformation of the wall concrete, inhibit the appearance and development of wall cracks, and change the wall damage form from brittle to ductile; the continuous composite spiral stirrups and the continuous composite spiral horizontal distribution bars are overlapped at the edge of the wall, which can strengthen the connection between the wall body and the constrained edge members at both ends, which is beneficial to the transfer of force; when the constrained edge members are subjected to higher axial forces, the wall body can quickly share part of the force, so as to achieve the purpose of effective collaborative work, thereby enhancing the stability of the entire wall body and improving the seismic performance of the wall body.

[0046] In the present invention, the continuous composite spiral stirrups and the continuous composite spiral horizontal distribution bars are both made of fine-diameter, closely matched high-strength steel bars, which can effectively restrain the core concrete and increase its ultimate compressive strain, thereby improving the compressive strength and deformation capacity of the concrete; through the continuous constraint of the continuous composite spiral stirrups, the stirrups can be effectively avoided from collapsing and breaking, thereby preventing and reducing the buckling and fracture of the longitudinal bars, and the core concrete at the bottom of the shear wall is not easy to be crushed and fall off.

[0047] In the shear wall structure described in the present invention, the continuous composite spiral stirrups and the continuous composite spiral horizontal distribution bars have the characteristics of high strength, close fit and closure, and can effectively inhibit the occurrence and development of oblique cracks in the wall, thereby improving the shear bearing capacity of the shear wall; due to their restraining effect on the core concrete, they can effectively improve the bearing capacity and deformation capacity of the shear wall, as well as the energy dissipation capacity, and effectively improve the seismic performance of the shear wall, while avoiding brittle shear failure of the wall, and instead prefer ductile bending or bending-shear failure, thereby achieving the transformation of the high-strength concrete shear wall from brittle failure to ductile failure.

[0048] In the prior art, the spacing between stirrups in the plastic hinge zone is usually 100 mm. When the concrete is crushed in the compressive limit state, it collapses from the gaps in the stirrups, and the longitudinal steel bars bend and lose their bearing capacity.

[0049] The present invention has shown in the test of changing the stirrup spacing that the compressive bearing capacity can be improved when the stirrup spacing is increased; when the stirrup spacing is less than 80mm, the bearing capacity and ductility coefficient are improved; especially when the stirrup spacing is 35-60mm, the bearing capacity and ductility coefficient increase rate is accelerated.

[0050] As attached Figure 5 As shown, attached Figure 5 The hysteresis curve of the composite spiral stirrup confined concrete shear wall structure of the present invention is given in the attached figure. Figure 5 It can be seen that the hysteresis loops of the high-strength concrete shear wall constrained by composite spiral stirrups are full and the number of loops is large. The bearing capacity at each stage is significantly improved, and the deformation capacity is significantly improved. Under the constraint of continuous composite spiral steel bars, the concrete is bound by densely matched spiral stirrups and is difficult to break, which also avoids the collapse of internal concrete, thereby significantly improving the seismic performance and energy consumption capacity of the shear wall.

[0051] In the existing technology, the commonly used stirrup strength is 300MPa, and the bearing capacity decreases rapidly after the peak value; the decrease slows down when the stirrup strength is 800MPa; the stirrup strength is as high as 1300MPa, and the bearing capacity does not decrease when the deformation is large. It is an ideal energy-consuming ductile material, which breaks the traditional concept that the strength of stirrups does not need to be increased. Engineering practice has proved that the use of high-strength stirrups saves about 30% of the steel bars used compared with the conventional low-strength stirrups. The use of high-strength stirrups can also indirectly reduce CO2 emissions. The energy-saving and emission reduction indicators are shown in Table 1.

[0052] Table 1 Energy saving and emission reduction indicators of high-strength stirrups

[0053]

[0054] Ordinary stirrups have a large diameter. The present invention uses high-strength steel bars to make continuous composite spiral stirrups and continuous composite spiral horizontal distribution bars. The diameter of the high-strength steel bars is 4-6 mm, which effectively increases the bonding strength between concrete and steel bars, reduces the amount of stirrups used, and obtains economic benefits.

[0055] The composite spiral stirrup restrained concrete shear wall structure described in the present invention adopts continuous composite spiral stirrups to effectively restrain the core concrete, which can greatly improve the compressive strength and deformation performance of the concrete; after the peak load, it can continue to provide a large restraining force, improve its bearing capacity and deformation capacity, and significantly improve the seismic performance of the concrete structure; the continuous composite spiral stirrups can inhibit the generation and expansion of oblique cracks, thereby improving the shear bearing capacity of the component; when high-strength concrete is used to reduce the cross-sectional size of the component, high-strength continuous composite spiral stirrups are used because of their high strength, small diameter, and one-step molding, which can avoid steel bar crowding, facilitate construction and ensure quality; using continuous composite spiral steel bars as transverse steel bars can improve the brittleness of high-strength concrete and broaden the scope of application of high-strength concrete.

[0056] With the above embodiments of the present invention as inspiration, through the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A composite spiral stirrup-confined concrete shear wall structure, characterized in that: The invention comprises continuous composite spiral stirrups (1), continuous composite spiral horizontal distribution bars (2), longitudinal bars (3), vertical distribution bars (4) and concrete (5), wherein the continuous composite spiral horizontal distribution bars (2) are evenly distributed in the concrete (5); adjacent continuous composite spiral horizontal distribution bars (2) are fixedly connected together on the same horizontal plane; the continuous composite spiral stirrups (1) are symmetrically arranged at the two end constraint edge members of the concrete (5); longitudinal bars (3) are evenly arranged in the overlapping area between the continuous composite spiral stirrups (1) and the continuous composite spiral horizontal distribution bars (2); and vertical distribution bars (4) are evenly arranged in the continuous composite spiral horizontal distribution bars (2).

2. A composite spiral stirrup confined concrete shear wall structure according to claim 1, characterized in that: The longitudinal reinforcement (3) is tied and fixed to the continuous composite spiral stirrup (1); and the vertical distribution reinforcement (4) is tied and fixed to the continuous composite spiral horizontal distribution reinforcement (2).

3. The composite spiral stirrup-confined concrete shear wall structure according to claim 1, characterized in that: The continuous composite spiral stirrup (1) comprises a plurality of stirrup units (11), each of which is a rectangular structure; the plurality of stirrup units (11) are connected in sequence end to end in a spiral shape, and the vertical spacing between adjacent stirrup units (11) is 60-100 mm.

4. The composite spiral stirrup-confined concrete shear wall structure according to claim 1, characterized in that: The continuous composite spiral horizontal distribution ribs (2) include a plurality of distribution rib units, all of which are rectangular structures; two adjacent distribution rib units are connected in sequence in a spiral shape, and the vertical spacing between adjacent distribution rib units is 80-150 mm.

5. The composite spiral stirrup-confined concrete shear wall structure according to claim 1, characterized in that: The continuous composite spiral stirrups (1) and the continuous composite spiral horizontal distribution bars (2) are both made of high-strength steel bars with a thin diameter; the diameter of the high-strength steel bars is 4-6 mm, and the strength of the high-strength steel bars is not less than 800 MPa.

6. The composite spiral stirrup-confined concrete shear wall structure according to claim 1, characterized in that: Concrete (5) is made of high-strength concrete, and the strength grade of the concrete is not less than C50.

7. The composite spiral stirrup-confined concrete shear wall structure according to claim 1, characterized in that: The longitudinal reinforcement (3) is made of steel bars with a strength not less than HRB400, and the vertical distribution reinforcement (4) is made of HRB335 steel bars or HRB400 steel bars.

8. A construction method for a composite spiral stirrup-confined concrete shear wall structure as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1, manufacturing continuous composite spiral stirrups (1), continuous composite spiral horizontal distribution bars (2), longitudinal bars (3) and vertical distribution bars (4), and processing shear wall component formwork; Step 2, evenly arranging the continuous composite spiral horizontal distribution reinforcement (2), setting the continuous composite spiral stirrup (1) at the edge of the concrete member, and fixing the continuous composite spiral stirrup (1) and the continuous composite spiral horizontal distribution reinforcement (2); Step 3, installing the longitudinal reinforcement (3) inside the continuous composite spiral stirrup (1), and installing the vertical distribution reinforcement (4) inside the continuous composite spiral horizontal distribution reinforcement (2) to form a reinforcement skeleton; Step 4: Install the formwork, pour concrete, and vibrate to compact it; Step 5: Maintenance, removing the formwork, and obtaining the shear wall structure.

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