A prefabricated concrete shear wall component close-fitting connection structure and construction method

Abstract

This application relates to a prefabricated concrete shear wall component close-fitting connection structure and construction method, belonging to the technical field of building engineering, including the following steps: S1: Arrange stirrups in the gap between the double reinforcement bars of the first shear wall, insert straight bars into the groove of the first shear wall, and tie the straight bars to the stirrups with steel wires; S2: Pull the straight bars upwards, causing the stirrups to retract obliquely upwards into the groove of the first shear wall; S3: Hoist the second shear wall, so that the grooves of the second shear wall and the first shear wall are opposite each other, and the first shear wall and the second shear wall are closely fitted; S4: Lower the straight bars, the stirrups automatically extend into the groove of the second shear wall and contact the top reinforcement of the second shear wall, insert the straight bars into the groove of the second shear wall, and tie them with steel wires through a reinforcement mechanism to form a steel reinforcement skeleton; S5: Cast concrete in place in the grooves of the first shear wall and the second shear wall. This application has the effects of simplifying construction procedures, shortening the construction cycle, and improving construction efficiency.

Description

Technical Field

[0001] This application relates to the field of building engineering, and in particular to a close-fitting connection structure and construction method for prefabricated concrete shear wall components. Background Technology

[0002] Shear walls, also known as wind-resistant walls, earthquake-resistant walls, or structural walls, are walls in buildings or structures that primarily bear horizontal and vertical loads caused by wind or earthquakes to prevent structural shear failure. They are typically supported by reinforced concrete.

[0003] Currently, in prefabricated shear wall structure systems, the shear walls in the corner concealed column structure need to be supported on-site to form a mold cavity. Then, steel bars are placed and tied in the mold cavity, followed by the pouring of concrete in the mold cavity. Finally, the mold is removed after curing, thus completing the connection of the prefabricated shear wall.

[0004] However, the construction process of on-site formwork and pouring large amounts of concrete is complex, resulting in a long construction period and insufficient efficiency. Summary of the Invention

[0005] The purpose of this application is to provide a prefabricated concrete shear wall component close-fitting connection structure and construction method, which simplifies construction procedures, shortens construction cycle, and improves construction efficiency.

[0006] Firstly, the prefabricated concrete shear wall component close-fitting connection structure provided in this application adopts the following technical solution: A prefabricated concrete shear wall component close-fitting connection structure includes an adjacent first shear wall and a second shear wall. The first shear wall and the second shear wall each have a groove on their adjacent sides. The two grooves are arranged opposite each other. The grooves are provided with connectors that connect the first shear wall and the second shear wall. The first shear wall and the second shear wall are close-fittingly assembled.

[0007] By adopting the above technical solution, the first and second shear walls can be prefabricated in the factory and transported to the site for installation. The first and second shear walls are closely connected, eliminating the need for formwork and sealing, which is quick and convenient, and reduces the work of on-site formwork. After installation, only the groove between the first and second shear walls needs to be poured with concrete, thereby reducing the amount of cast-in-place concrete used. It also reduces the work of formwork and reinforcement during on-site casting, simplifies the construction process, shortens the construction cycle, and improves construction efficiency.

[0008] Optionally, the connector includes multiple sets of double reinforcement bars evenly arranged vertically at the groove opening of the first shear wall. The double reinforcement bars include upper and lower reinforcement bars arranged parallel to each other on the side wall of the groove opening. The groove in the second shear wall also has upper reinforcement bars. The connector also includes annular closed stirrups arranged between the upper and lower reinforcement bars. Vertical straight reinforcement bars are provided at the bottom of both grooves. All stirrups are tied to the straight reinforcement bars.

[0009] By adopting the above technical solution, the stirrups are restricted by the top and bottom bars, which limit the stirrups in the vertical direction. Then, the four corners of the stirrups are tied to the straight bars, thereby forming a steel reinforcement skeleton, which connects the first shear wall and the second shear wall. After the concrete is poured between the first shear wall and the second shear wall, the connector can provide support to the concrete and play a stabilizing role.

[0010] Optionally, the lower rib is provided with a positioning block, the positioning block is provided with a snap-fit ​​groove that snaps onto the lower rib, and the side of the positioning block away from the lower rib is provided with a positioning groove for snapping onto the stirrup, and the two ends of the positioning groove are arranged downward along the arc.

[0011] By adopting the above technical solution, the positioning block is connected to the bottom reinforcement through the snap-fit ​​groove, and at the same time connected to the stirrup through the positioning groove. This allows for quick positioning of the stirrup. In addition, the two ends of the positioning groove are set to be arc-shaped, so that when the stirrup rotates to one end due to gravity, it is difficult for it to directly detach from the positioning groove, making the stirrup more stable. This allows all the bottom reinforcement to be connected to the stirrup, and then the straight reinforcement is inserted to maintain the relative position of the straight reinforcement and the stirrup, thus facilitating the binding of the stirrup and the straight reinforcement.

[0012] Optionally, the stirrup is provided with limiting blocks at both ends of its corners, and limiting grooves are provided on the limiting blocks. A steel wire is provided at the corners of the stirrup. The two ends of the steel wire are wrapped around the upper and lower sides of the stirrup and pass through the limiting grooves of the adjacent limiting blocks. The two ends of the steel wire are wrapped together, and the ends of the steel wire are provided with a reinforcing mechanism for binding the steel wire. The straight bar passes through the area surrounded by the steel wire.

[0013] By adopting the above technical solution, the positioning block positions the two ends of the steel wire so that the diameter can be directly inserted into the area surrounded by the steel wire. Then, the reinforcing mechanism rotates and twists the two ends of the steel wire so that the two ends of the steel wire are wrapped together, thereby binding the straight bar and the stirrup together.

[0014] Optionally, the reinforcement mechanism includes a rotating drum, one end of which faces the end of the steel wire, and the other end is rotatably connected to a support rod. The support rod is equipped with a drive motor that drives the rotating drum to rotate, and the rotating drum is equipped with a clamping assembly for clamping the end of the steel wire.

[0015] By adopting the above technical solution, after the first shear wall and the second shear wall are connected, the rotating drum is aligned with the end of the steel wire that needs to be tied and reinforced by moving the support rod, and the end of the steel wire is inserted into the rotating drum. Then, the clamping component clamps the steel wire, and the drive motor drives the rotating drum to rotate, thereby quickly completing the tying of the steel wire. In addition, it solves the problem that the space between the first shear wall and the second shear wall is narrow, making it difficult for workers to tie the internal straight bars and stirrups, thus reducing the construction difficulty.

[0016] Optionally, the clamping assembly includes a pair of clamping blocks that are slidably connected to the rotating cylinder along the radial direction and are arranged opposite to each other. One end of the clamping block is located inside the rotating cylinder and the other end is located outside the rotating cylinder. A return spring is also provided between the clamping block and the rotating cylinder. The support rod is provided with a driving member that drives the two clamping blocks to move towards each other.

[0017] By adopting the above technical solution, the driving component drives the two clamping blocks to move into the rotating drum simultaneously. When the steel wire is located between the two clamping blocks, the two clamping blocks approach each other and clamp the steel wire. The end of the steel wire can rotate synchronously with the rotating drum, so that the steel wire can wrap and tie the straight bars and stirrups.

[0018] Optionally, the driving component includes a slip ring sleeved on the outside of the rotating drum, a fixed cylinder fixed to the support rod on the outside of the slip ring, a slip ring slidably connected inside the fixed cylinder and coaxial with the rotating drum, one side of the slip ring abutting the clamping block with the abutting surface being set as an inclined surface, and a transmission rack on the other side, a transmission gear meshing on the transmission rack, a rotating rod passing through and fixed on the transmission gear, the rotating rod being rotatably connected to the support rod, a pressure rod slidably connected inside the support rod, a driving rack fixedly connected to the pressure rod, a driving gear meshing with the driving rack fixedly connected to the rotating rod, and a positioning spring between the slip ring and the support rod.

[0019] By adopting the above technical solution, the pressing rod enters the support rod, the drive rack drives the drive gear to rotate, and the drive gear drives the transmission rack to move towards the slip ring through the rotating rod, and drives the slip ring to move synchronously. During the movement, the slip ring squeezes and pushes the clamping block into the rotating drum, releases the pressing rod, the positioning spring and the return spring restore their deformation, the slip ring returns to its original position, the pressing rod passes out of the support rod again, and at the same time the two clamping blocks move away from each other, thereby releasing the end of the steel wire.

[0020] Optionally, the two clamping blocks are both serrated on the side closest to each other and mesh with each other.

[0021] By adopting the above technical solution, the clamping block clamps the steel wire with serrations, thereby improving the stability of the clamping block in clamping the steel wire and making the steel wire more securely tied.

[0022] Optionally, an extension rod is threaded to the end of the support rod away from the fixed cylinder, and a drive rod is slidably connected inside the extension rod. One end of the drive rod extends out of the extension rod, and the other end abuts against the end of the pressure rod away from the fixed cylinder.

[0023] By adopting the above technical solution, the extension rod is connected to the support rod by a thread. By pressing the drive rod, the pressure rod can be controlled, thereby extending the length of the support rod and the pressure rod. The range of the binding wire of the reinforcement mechanism can be adjusted by adjusting the length.

[0024] Secondly, the construction method for a prefabricated concrete shear wall component close-fitting connection structure provided in this application adopts the following technical solution: A construction method for a prefabricated concrete shear wall component close-fitting connection structure includes the following steps: S1: Stirrups are arranged in the gap between the double reinforcements of the first shear wall, and straight bars are inserted into the groove of the first shear wall. The straight bars are tied to the stirrups with steel wires. S2: Pull the straight bar upwards so that the stirrup is diagonally retracted into the groove of the first shear wall; S3: Hoist the second shear wall so that the grooves of the second shear wall and the first shear wall are aligned, and the first shear wall and the second shear wall are tightly joined together; S4: Lower the straight reinforcement bars, and the stirrups automatically extend into the groove of the second shear wall and contact the upper reinforcement bars of the second shear wall. Insert the straight reinforcement bars into the groove of the second shear wall and tie the steel wires through the reinforcement mechanism to form a steel reinforcement skeleton. S5: Cast concrete in place within the grooves of the first and second shear walls.

[0025] By adopting the above technical solutions, prefabricated shear wall components can be prefabricated in the factory and transported to the site for installation. After installation, only a small amount of cast-in-place concrete is needed for connection to complete the construction, replacing the cast-in-place corner columns. This reduces the workload of formwork, reinforcement binding, and concrete pouring during the cast-in-place process, greatly improving construction efficiency and shortening the construction period. At the same time, replacing cast-in-place structures with prefabricated components further increases the proportion of prefabrication in building construction, reduces the amount of wet work on site, and reduces the consumption and waste of materials during on-site construction.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The first and second shear walls are prefabricated and spliced, which reduces on-site casting, simplifies construction procedures, shortens the construction period, and improves construction efficiency; 2. The steel reinforcement cage is tied in the groove after the first shear wall and the second shear wall are spliced ​​together, which eliminates the need for on-site formwork, reduces the amount of cast-in-place concrete, and improves construction efficiency. Attached Figure Description

[0027] Figure 1This is a schematic diagram of the overall structure of Embodiment 1 of this application; Figure 2 This is a schematic diagram of the connection structure of double reinforcement and stirrups in Embodiment 1 of this application; Figure 3 This is a schematic diagram of the reinforcement mechanism of Embodiment 1 of this application; Figure 4 This is a schematic diagram of the internal structure of the reinforcement mechanism in Embodiment 1 of this application; Figure 5 This is a schematic diagram of the clamping block and rotating cylinder in Embodiment 1 of this application; In the diagram, 1. First shear wall; 2. Second shear wall; 3. Groove; 4. Double reinforcement; 41. Top reinforcement; 42. Bottom reinforcement; 43. Positioning block; 431. Snap-fit ​​groove; 432. Positioning groove; 5. Stirrup; 6. Straight reinforcement; 7. Steel wire; 8. Limiting block; 81. Limiting groove; 9. Reinforcing mechanism; 91. Support rod; 92. Fixing cylinder; 93. Rotating cylinder; 931. Guide cylinder; 94. Clamping assembly; 941. Clamping block; 942. Return spring; 95. Driving component; 951. Slip ring; 952. Positioning spring; 953. Transmission rack; 954. Transmission gear; 955. Rotating rod; 956. Drive gear; 957. Drive rack; 958. Pressure rod; 96. Drive motor; 97. Switch; 98. Extension rod; 99. Drive rod. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0029] Example 1: A close-fitting connection structure for prefabricated concrete shear wall components, referring to... Figure 1 and Figure 2 The system includes a first shear wall 1 and a second shear wall 2, wherein the first shear wall 1 is an L-shaped shear wall and the second shear wall 2 is a straight shear wall. Vertically arranged grooves 3 are provided at both ends of the first shear wall 1 and both ends of the second shear wall 2. The grooves 3 at the joint of the first shear wall 1 and the second shear wall 2 are positioned opposite each other. A connecting member is provided in the groove 3 between the first shear wall 1 and the second shear wall 2 to connect the two.

[0030] The first shear wall 1 and the second shear wall 2 are tightly connected, that is, the first shear wall 1 and the second shear wall 2 abut against each other. If there is a gap between the first shear wall 1 and the second shear wall 2, the gap shall not be greater than 10mm and can be sealed with double-sided tape. In this way, the groove 3 between the first shear wall 1 and the second shear wall 2 forms a closed area, and then concrete is filled into the closed area.

[0031] The first shear wall 1 can also be set as a T-shaped shear wall to adapt to the connection structure of different shear walls.

[0032] The connector includes double ribs 4. Multiple sets of double ribs 4 are evenly arranged vertically in the groove 3 of the first shear wall 1. The double ribs 4 include upper ribs 41 and lower ribs 42 arranged parallel to each other and sequentially from top to bottom. Both upper ribs 41 and lower ribs 42 are horizontally fixed to the side wall of the groove 3. The upper ribs are installed in the groove 3 of the second shear wall 2, and the upper ribs 41 in the first shear wall 1 and the upper ribs 41 in the second shear wall 2 are arranged opposite to each other.

[0033] Stirrups 5 are installed in the gap between the top reinforcement 41 and the bottom reinforcement 42 of the first shear wall 1. The stirrups 5 are rectangular ring structures. One end of the stirrup 5 passes through the groove 3 between the top reinforcement 41 and the bottom reinforcement 42. Two positioning blocks 43 are provided on the bottom reinforcement 42, and two positioning rods correspond to the two sides of the stirrup 5 respectively. The side of the positioning block 43 closest to the bottom reinforcement 42 has a snap-fit ​​groove 431, and the bottom reinforcement 42 is inserted into the snap-fit ​​groove 431. The side of the positioning block 43 away from the bottom reinforcement 42 has a positioning groove 432, and the adjacent side rod of the stirrup 5 is inserted into the positioning groove 432. Both the bottom reinforcement 42 and the stirrup 5 are interference-fitted with the positioning block 43. In addition, the bottom of both ends of the positioning groove 432 is arc-shaped and downward.

[0034] The first shear wall 1 has two straight bars 6 inserted from top to bottom in the groove 3. The straight bars 6 simultaneously abut against the inner side wall of the corresponding corner of the stirrup 5, and then the straight bars 6 and the stirrup 5 are tied together by steel wire 7.

[0035] Before the second shear wall 2 is hoisted close to the first shear wall 1, the straight reinforcement 6 in the first shear wall 1 is pulled upwards, causing the stirrups 5 to move obliquely upwards and retract into the groove 3 of the first shear wall 1. At this time, the arc-shaped bottom of the positioning groove 432 at both ends makes it difficult for the stirrups 5 to fall out of the positioning groove 432, thus maintaining the neat position of the stirrups 5. After the first shear wall 1 and the second shear wall 2 are connected, the straight reinforcement 6 and stirrups 5 in the lower part of the first shear wall 1 fall down and automatically extend into the groove 3 of the second shear wall 2, and at the same time abut against the lower side of the upper reinforcement 41 in the second shear wall 2. Then the straight reinforcement 6 is inserted into the groove 3 of the second shear wall 2.

[0036] Reference Figure 3 To facilitate the binding of straight bars 6 and stirrups 5, limit blocks 8 are fixedly connected to both ends of the corners of stirrups 5. Limit blocks 8 have limit grooves 81 on the side of the corresponding corner of stirrups 5. Steel wires 7 are provided on the outside of stirrups 5. The two ends of steel wires 7 are located above and below stirrups 5 respectively. One end of steel wires 7 passes through the limit groove 81 on one limit block 8 from top to bottom, and the other end passes through the limit groove 81 on another limit block 8 from bottom to top. The two ends of steel wires 7 are intertwined after passing through the limit grooves 81.

[0037] When the straight bar 6 is inserted into the groove 3 in the second shear wall 2, the diameter bar passes through the area enclosed by the steel wire 7. A reinforcement mechanism 9 is provided to twist the end of the steel wire 7. During this process, the steel wire 7 can be released from the limiting groove 81 under the action of external force, thereby reducing the binding area of ​​the steel wire 7 and thus firmly binding the straight bar 6 and the stirrup 5.

[0038] Reference Figure 3 and Figure 4 The reinforcement mechanism 9 includes a support rod 91, one end of which is fixedly connected to a fixed cylinder 92. A rotating cylinder 93 is located inside the fixed cylinder 92. One end of the rotating cylinder 93 is rotatably connected to the support rod 91, and the other end extends out of and is rotatably connected to the fixed cylinder 92. A drive motor 96 is installed inside the support rod 91, and the output shaft of the drive motor 96 is fixedly coaxially with the rotating cylinder 93.

[0039] Reference Figure 4 and Figure 5 The rotating cylinder 93 is provided with a clamping assembly 94, which includes two opposing clamping blocks 941 disposed inside the rotating cylinder 93. The ends of the two clamping blocks 941 that are close to each other are both set in a sawtooth shape, and the ends of the two clamping blocks 941 that are far from each other pass through the rotating cylinder 93 and are slidably connected to the rotating cylinder 93. A clearance groove is also provided inside the rotating cylinder 93. A slider is fixedly connected to the clamping block 941 and inserted into the clearance groove. The slider is slidably connected to the clearance groove along the moving direction of the clamping block 941. A return spring 942 is fixedly connected between the slider and the rotating cylinder 93.

[0040] The clamping assembly 94 also includes a drive member 95 that drives the two clamping blocks 941 to move closer to each other. After both ends of the steel wire 7 are inserted into the inside of the rotating drum 93, the drive member 95 drives the two clamping blocks 941 to move closer to each other and clamp the two ends of the steel wire 7. The drive motor 96 drives the rotating drum 93 to rotate, thereby realizing the binding and reinforcement of the steel wire 7.

[0041] To facilitate the entry of the steel wire 7 into the rotating drum 93, a guide cylinder 931 is fixedly connected to one end of the rotating drum 93 outside the fixed cylinder 92. The inner wall of the guide cylinder 931 is conical, and the inner wall of the guide cylinder 931 gradually narrows near the end of the rotating drum 93. When the steel wire 7 abuts against the inner wall of the guide cylinder 931, the steel wire 7 moves along the inner wall of the guide cylinder 931 into the rotating drum 93.

[0042] A groove is provided between the fixed cylinder 92 and the rotating cylinder 93. The driving component 95 includes a slip ring 951 disposed in the groove. The slip ring 951 is slidably connected to the fixed cylinder 92 along the axial direction of the rotating cylinder 93. One side of the slip ring 951 abuts against the clamping block 941, and the side of the clamping block 941 near the slip ring 951 is arc-shaped. Multiple evenly distributed positioning springs 952 are fixedly connected to the other side of the slip ring 951. The positioning springs 952 are also fixed to the support rod 91. A transmission rack 953 is also fixedly connected to the end of the slip ring 951 near the positioning springs 952. A transmission gear 954 is meshed on the 3rd gear. A rotating rod 955 is fixedly connected to the transmission gear 954 on the same axis. The rotating rod 955 is rotatably connected to the support rod 91. A drive gear 956 is also fixedly connected to the rotating rod 955 on the same axis. A drive rack 957, perpendicular to the transmission rack 953, meshes on the drive gear 956. One end of the drive rack 957 is directly opposite a switch 97 that is electrically connected to the drive motor 96. The other end is fixedly connected to a pressure rod 958. The end of the pressure rod 958 away from the drive rack 957 extends out of the support rod 91 and is slidably connected to the support rod 91.

[0043] Pressing the pressure lever 958 causes the drive rack 957 to drive the drive gear 956 to rotate. The drive gear 956 drives the transmission gear 954 to rotate via the rotating rod 955. The transmission gear 954 drives the transmission rack 953 to move. Under the action of the transmission rack 953, the slip ring 951 squeezes the clamping block 941, causing the two clamping blocks 941 to move closer together and clamp the steel wire 7. At the same time, the drive rack 957 presses on the switch 97, and the drive motor 96 drives the rotating drum 93 to rotate, thereby binding the steel wire 7. When the pressure lever 958 is released, the slip ring 951 returns to its original position under the action of the positioning spring 952. The drive rack 957 stops pressing the switch 97, the rotating drum 93 stops rotating, and the return spring 942 drives the two clamping blocks 941 to move away from each other, thereby releasing the steel wire 7. This process is repeated to bind all the steel wires 7 in sequence.

[0044] Reference Figure 3 In order to control the application range of the reinforcement mechanism 9, an extension rod 98 is threadedly connected to the end of the support rod 91 away from the fixed cylinder 92. A drive rod 99 is slidably connected inside the extension rod 98. One end of the drive rod 99 extends out of the extension rod 98, and the other end abuts against the pressure rod 958. Thus, the application range of the reinforcement mechanism 9 can be controlled by adding or removing the extension rod 98.

[0045] The implementation principle of this application embodiment is as follows: Stirrups 5 are installed in the double reinforcement 4 inside the first shear wall 1, followed by the insertion of straight reinforcement 6. The straight reinforcement 6 is then tied to the stirrups 5. The straight reinforcement 6 is pulled up, and the stirrups 5 are retracted into the groove 3 of the first shear wall 1. The second shear wall 2 is then hoisted and connected to the first shear wall 1. The straight reinforcement 6 is lowered, and the stirrups 5 extend into the groove 3 of the second shear wall 2. The straight reinforcement 6 is inserted into the groove 3 of the second shear wall 2. The stirrups 5 and the straight reinforcement 6 in the second shear wall 2 are tied together using a reinforcing assembly. The joint between the first shear wall 1 and the second shear wall 2 is sealed with sealant. Finally, concrete is poured into the groove 3 of the first shear wall 1 and the second shear wall 2.

[0046] Example 2: A construction method for a prefabricated concrete shear wall component close-fitting connection structure, comprising the following steps: S1: Stirrups 5 are arranged in the gaps of the double reinforcements 4 in the first shear wall 1, and straight reinforcements 6 are inserted into the grooves 3 of the first shear wall 1. The straight reinforcements 6 are tied to the stirrups 5 by steel wires 7. S2: Pull the straight bar 6 upwards so that the stirrup 5 is obliquely retracted into the groove 3 of the first shear wall 1; S3: Hoist the second shear wall 2 so that the groove 3 of the second shear wall 2 and the first shear wall 1 are opposite each other, and the width of the vertical joint between the first shear wall 1 and the second shear wall 2 is less than or equal to 10mm; S4: Lower the straight bar 6, the stirrup 5 automatically extends into the groove 3 of the second shear wall 2 and contacts the double bar 4 of the second shear wall 2. The straight bar 6 is inserted into the groove 3 of the second shear wall 2 and the steel wire 7 is tied through the reinforcement mechanism 9 to form a steel reinforcement skeleton. S5: Fill the joint between the first shear wall 1 and the second shear wall 2 with sealant, and then pour concrete into the groove 3 of the first shear wall 1 and the second shear wall 2.

[0047] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A close-fitting connection structure for prefabricated concrete shear wall components, characterized in that, It includes an adjacent first shear wall (1) and second shear wall (2). The first shear wall (1) and the second shear wall (2) are provided with grooves (3) on their adjacent sides. The two grooves (3) are arranged opposite to each other. The grooves (3) are provided with connectors that connect the first shear wall (1) and the second shear wall (2). The first shear wall (1) and the second shear wall (2) are closely joined together. The connector includes multiple sets of double reinforcements (4) evenly arranged vertically at the groove (3) opening of the first shear wall (1). The double reinforcements (4) include an upper reinforcement (41) and a lower reinforcement (42) arranged parallel to the side wall of the groove (3). The groove (3) in the second shear wall (2) is also provided with an upper reinforcement (41). The connector also includes an annular closed stirrup (5) arranged between the upper reinforcement (41) and the lower reinforcement (42). Vertical straight reinforcements (6) are provided at the bottom of the grooves (3) of both grooves. All stirrups (5) are tied to the straight reinforcements (6). The stirrup (5) has a limiting block (8) at both ends of its corner. The limiting block (8) has a limiting groove (81). The stirrup (5) has a steel wire (7) at its corner. The two ends of the steel wire (7) pass around the upper and lower sides of the stirrup (5) and pass through the limiting groove (81) of the adjacent limiting block (8). The two ends of the steel wire (7) are wrapped together, and the ends of the steel wire (7) are provided with a reinforcing mechanism (9) for binding the steel wire (7). The straight bar (6) passes through the area surrounded by the steel wire (7). The reinforcement mechanism (9) includes a rotating drum (93), one end of which faces the end of the steel wire (7), and the other end is rotatably connected to a support rod (91). The support rod (91) is equipped with a drive motor (96) for driving the rotating drum (93) to rotate, and the rotating drum (93) is equipped with a clamping assembly (94) for clamping the end of the steel wire (7). The clamping assembly (94) includes a pair of clamping blocks (941) that are slidably connected to the rotating cylinder (93) radially and arranged opposite to each other. One end of the clamping block (941) is located inside the rotating cylinder (93) and the other end is located outside the rotating cylinder (93). A return spring (942) is also provided between the clamping block (941) and the rotating cylinder (93). The support rod (91) is provided with a driving member (95) for driving the two clamping blocks (941) to move towards each other. The driving component (95) includes a slip ring (951) sleeved on the outside of the rotating drum (93). A fixed cylinder (92) fixed to the support rod (91) is provided on the outside of the slip ring (951). The slip ring (951) is slidably connected inside the fixed cylinder (92) and is coaxial with the rotating drum (93). One side of the slip ring (951) abuts against the clamping block (941) and the abutting surface is set as an inclined surface. The other side is provided with a transmission rack (953). A transmission gear meshes on the transmission rack (953). A rotating rod (955) is inserted and fixed on the transmission gear (954). The rotating rod (955) is rotatably connected to the support rod (91). A pressure rod (958) is slidably connected inside the support rod (91). A drive rack (957) is fixedly connected on the pressure rod (958). A drive gear (956) that meshes with the drive rack (957) is fixedly connected on the rotating rod (955). A positioning spring (952) is provided between the slip ring (951) and the support rod (91).

2. The prefabricated concrete shear wall component close-fitting connection structure according to claim 1, characterized in that, The lower reinforcing bar (42) is provided with a positioning block (43), and the positioning block (43) is provided with a snap-fit ​​groove (431) that snaps onto the lower reinforcing bar (42). The positioning block (43) is provided with a positioning groove (432) for snapping onto the stirrup (5) on the side away from the lower reinforcing bar (42). The two ends of the positioning groove (432) are set downward along the arc.

3. The prefabricated concrete shear wall component close-fitting connection structure according to claim 1, characterized in that, The two clamping blocks (941) are both serrated on the side that is close to each other and they mesh with each other.

4. The prefabricated concrete shear wall component close-fitting connection structure according to claim 1, characterized in that, The support rod (91) is threaded to an extension rod (98) at one end away from the fixed cylinder (92). A drive rod (99) is slidably connected inside the extension rod (98). One end of the drive rod (99) extends out of the extension rod (98), and the other end abuts against the end of the pressure rod (958) away from the fixed cylinder (92).

5. A construction method for using the prefabricated concrete shear wall component close-fitting connection structure according to any one of claims 1-4, characterized in that, Includes the following steps: S1: Stirrups (5) are arranged in the gap between the double reinforcement (4) of the first shear wall (1), and straight bars (6) are inserted into the groove (3) of the first shear wall (1). The straight bars (6) are tied to the stirrups (5) by steel wire (7). S2: Pull the straight bar (6) upwards so that the stirrup (5) is obliquely retracted into the groove (3) of the first shear wall (1); S3: Hoist the second shear wall (2) so that the grooves (3) of the second shear wall (2) and the first shear wall (1) are opposite each other, and the first shear wall (1) and the second shear wall (2) are closely joined; S4: Lower the straight bar (6), the stirrup (5) automatically extends into the groove (3) of the second shear wall (2) and contacts the upper bar (41) of the second shear wall (2). The straight bar (6) is inserted into the groove (3) of the second shear wall (2) and the steel wire (7) is tied through the reinforcement mechanism (9) to form a steel reinforcement skeleton. S5: Cast concrete in place in the groove (3) of the first shear wall (1) and the second shear wall (2).

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