Fabricated steel plate shear wall and method of installing same

Abstract

The application discloses a novel assembled steel plate shear wall and belongs to the technical field of shear walls, which comprises a prefabricated upper wall, a prefabricated lower wall, positioning rods, fixing tubes and arc-shaped plates. The application replaces the connecting mode of inserting steel bars into steel bar sleeves in the prior art. The positioning rods are horizontally moved from the gaps to the space between the two arc-shaped plates and are wrapped with the blocking strips, so that the situation that the steel bars are bent due to misalignment during the process of inserting the steel bars into the steel bar sleeves is avoided. During installation, the distance between the prefabricated upper wall and the prefabricated lower wall is short, the height of the prefabricated upper wall that needs to be lifted is relatively low, the prefabricated upper wall is less affected by wind load and shakes less, and the prefabricated upper wall is easier to assemble in the process of assembling the shear wall.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of shear walls, and particularly relates to a novel prefabricated steel plate shear wall and a mounting method thereof. BACKGROUND

[0002] Due to the huge demand for medium and high-rise buildings, especially residential buildings in China, prefabricated reinforced concrete buildings with shear wall structures have become the focus of current development.

[0003] In the prior art, a plurality of steel bars are arranged on the prefabricated upper wall, and a plurality of steel bar sleeves are arranged on the corresponding side walls of the prefabricated lower wall. When the prefabricated upper wall is mounted on the prefabricated lower wall, the prefabricated upper wall needs to be lifted by a lifting tool, and each steel bar needs to be aligned with the corresponding steel bar sleeve, so as to complete the assembly of the entire shear wall. When some of the steel bars are not aligned with the steel bar sleeves, the steel bars will be bent when they contact the end of the steel bar sleeve during the lowering process of the prefabricated upper wall. When the bent steel bars are aligned with the corresponding steel bar sleeves again and the prefabricated upper wall is lowered, the bent steel bars will be stuck in the steel bar sleeves, so that the assembly of the shear wall cannot be completed smoothly. SUMMARY

[0004] Therefore, the present application aims to provide a novel prefabricated steel plate shear wall to solve the technical problem that when some of the steel bars are not aligned with the steel bar sleeves, the steel bars will be bent when they contact the end of the steel bar sleeve during the lowering process of the prefabricated upper wall, and when the bent steel bars are aligned with the corresponding steel bar sleeves again and the prefabricated upper wall is lowered, the bent steel bars will be stuck in the steel bar sleeves, so that the assembly of the shear wall cannot be completed smoothly.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] The present application provides a novel prefabricated steel plate shear wall, which comprises a prefabricated upper wall and a prefabricated lower wall. The side of the prefabricated upper wall facing the prefabricated lower wall is connected with a plurality of positioning rods. The corresponding side wall of the prefabricated lower wall is provided with a fixed tube. A rotating tube is coaxially connected in the fixed tube. A blocking strip capable of extending out of the fixed tube is arranged in the fixed tube outside the rotating tube. Two arc-shaped plates capable of blocking the corresponding blocking strips are coaxially connected on the rotating tube, and have a gap therebetween. When the positioning rods slide into the gap between the two arc-shaped plates, the rotating tube rotates, the arc-shaped plates move away from the blocking strips, and the blocking strips can extend into the gap.

[0007] Further, the end of the positioning rod close to the rotating tube is coaxially connected with a positioning ring; the circumferential side of the positioning ring is uniformly provided with a plurality of sliding grooves; each sliding groove is radially and slidingly connected with a abutting strip; the rotating tube is slidingly connected with a pushing column; the circumferential side of the rotating tube is provided with a through groove; the pushing column is connected with the stopper through a connecting strip which is slidingly arranged in the through groove; the stopper is extended into the gap under the action of the spring; the stopper and the arc-shaped plate form a complete ring structure which is coaxial with the positioning rod; the pushing column is synchronously slidingly arranged in the positioning ring and pushes the abutting strips out; the plurality of abutting strips are uniformly abutted against the inner wall of the ring structure.

[0008] Further, the inner diameter of the rotating tube is larger than the inner diameter of the pushing column; the positioning ring and the rotating tube are provided with a channel which can allow the grouting to enter; the channel is in communication with the rotating tube.

[0009] Further, the prefabricated lower wall is provided with a lower grouting groove which is in communication with the corresponding rotating tube.

[0010] Further, the prefabricated upper wall is provided with an upper grouting groove which is in communication with the outside; the positioning rod is provided with a positioning groove which is in communication with the positioning ring; the circumferential side of the positioning groove is provided with a connecting hole which is in communication with the upper grouting groove and a plurality of through holes which are lower than the arc-shaped plate; the upper grouting groove is in communication with the positioning groove through the connecting hole.

[0011] Further, the prefabricated upper wall and the prefabricated lower wall are both embedded with a steel plate which extends out; the opposite side walls of the two steel plates are both provided with a receiving groove; one of the receiving grooves is rotatably connected with a plurality of pulleys; the other receiving groove is rotatably connected with a plurality of rollers which are staggered with the plurality of pulleys; the rollers are wound with the same contact belt which is in contact with the pulleys; the contact belt can be changed from being tight to being loose through the rotation of the pulleys; the prefabricated upper wall can be moved through the rotation of the pulleys.

[0012] Further, the side of the contact belt which is away from the pulleys is provided with two disconnected ends; the steel plate which is embedded in the prefabricated upper wall is provided with a shielding hole which is in communication with the receiving groove and is blocked by the disconnected ends; the shielding hole is slidingly provided with a reinforcing rod; the receiving groove of the lower steel plate is correspondingly provided with a limiting hole which corresponds to the shielding hole; when the contact belt is loose, the shielding plate removes the shielding of the shielding hole, and the reinforcing rod passes through the receiving groove and is inserted into the limiting hole.

[0013] Further, the upper steel plate is provided with a reinforcing hole; the receiving groove is in communication with the outside through the reinforcing hole.

[0014] Another object of the present application is to provide a novel installation method of the prefabricated steel plate shear wall.

[0015] S1: hoist the prefabricated upper wall, so that the upper steel plate and the lower steel plate are located on the same horizontal plane, the rollers contact the tight contact belt, the positioning rod is staggered with the arc-shaped plate, and the positioning rod and the gap are located on the same plane;

[0016] S2: the pulley rotates to make the prefabricated upper wall slide, and the reinforcing rod is inserted between the two arc-shaped plates;

[0017] S3: the roller rotates to make the contact belt change from a relaxed state to a tight state, and the upper steel plate is positioned on the lower steel plate;

[0018] S4: the disconnected end removes the shielding of the shielding hole, and the reinforcing rod is inserted into the limiting hole;

[0019] S5: the rotating pipe rotates, the blocking strip is inserted into the gap between the two arc-shaped plates, and the arc-shaped plates form a complete ring structure;

[0020] S6: the pushing column is inserted into the positioning ring, so that the plurality of abutting strips extend from the sliding groove and are uniformly abutted on the inner wall of the ring of the ring structure;

[0021] S7: the prefabricated upper wall is grouted through the upper grouting groove;

[0022] S8: the containing groove is grouted through the reinforcing hole;

[0023] S9: the upper steel plate and the lower steel plate are welded;

[0024] S10: a formwork with an opening is erected at the joint of the prefabricated upper wall and the prefabricated lower wall;

[0025] S11: the formwork is grouted through the opening to form the post-cast concrete.

[0026] The beneficial effects of the present application are:

[0027] 1. The application replaces the connection mode of inserting reinforcing steel into a reinforcing sleeve in the prior art. The positioning rod is horizontally moved from the gap to between the two arc-shaped plates, and the blocking strip wraps the positioning rod, which can avoid the situation that the reinforcing steel is bent due to misalignment during the process of inserting the reinforcing steel into the reinforcing sleeve. When installing, since the positioning rod is connected by sliding into the gap, the distance between the prefabricated upper wall and the prefabricated lower wall is short during assembly, the height of lifting the prefabricated upper wall is relatively low, the prefabricated upper wall is less affected by wind load and shakes less, and it is easier to assemble the shear wall.

[0028] 2. When the arc-shaped plate and the blocking strip wrap the positioning rod, the blocking strip is inserted into the gap at the same time, the pushing column can push the abutting strip out, so that the abutting strip is uniformly abutted on the inner wall of the ring of the ring structure, thereby fixing the positioning rod, avoiding the deviation of the positioning rod during the grouting process, and leading the prefabricated upper wall to deviate from the predetermined installation position.

[0029] Additional advantages, objects, and features of the application will be apparent to those skilled in the art upon examination of the following detailed description, and it is intended that any such advantages, objects, and features of the present application be within the scope of the claimed application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to make the purposes, technical solutions and beneficial effects of the present application clearer, the present application provides the following drawings for illustration:

[0031] Figure 1 A three-dimensional view of the shearing wall pouring completed by the present application;

[0032] Figure 2 A three-dimensional view of the shearing wall connection of the present application;

[0033] Figure 3 A three-dimensional view of the connection of the fixed pipe, arc-shaped plate and positioning rod of the present application;

[0034] Figure 4 A three-dimensional view of the present application Figure 3 An explosion view of the hidden arc-shaped plate in the present application;

[0035] Figure 5 A three-dimensional view of the present application

[0036] In the drawings, the following marks are as follows: prefabricated upper wall 1, prefabricated lower wall 2, positioning rod 3, fixed pipe 4, rotating pipe 5, blocking strip 6, arc-shaped plate 7, positioning ring 8, abutting strip 9, pushing column 10, through slot 11, connecting strip 12, upper grouting slot 13, connecting hole 14, through hole 15, upper steel plate 16, lower steel plate 17, pulley 18, roller 19, contact belt 20, shielding plate 21, reinforcing rod 22, reinforcing hole 23, post-poured area concrete 24. DETAILED DESCRIPTION

[0037] As shown in Figures 1-5 The present application provides a novel prefabricated steel plate shearing wall, which comprises a prefabricated upper wall 1 and a prefabricated lower wall 2, and a plurality of positioning rods 3 are connected to one side of the prefabricated upper wall 1 facing the prefabricated lower wall 2; a fixed pipe 4 is installed on the corresponding side wall of the prefabricated lower wall 2; a rotating pipe 5 is coaxially and rotatably connected in the fixed pipe 4; a blocking strip 6 capable of extending out of the fixed pipe 4 is slidably arranged in the fixed pipe 4 on the outer side of the rotating pipe 5 through a spring; two arc-shaped plates 7 capable of blocking the corresponding blocking strips 6 are coaxially and rotatably connected on the rotating pipe 5, and have a gap therebetween; when the positioning rod 3 slides into the gap between the two arc-shaped plates 7, the rotating pipe 5 rotates, the arc-shaped plates 7 move away from the blocking strips 6, and the blocking strips 6 can extend into the gap.

[0038] Principle and beneficial effects of the above technical solution:

[0039] The prefabricated upper wall 1 is hoisted by the hoisting tool, the positioning rod 3 is slid into the gap between the two arc-shaped plates 7 in the horizontal direction from the gap between the two arc-shaped plates 7, the arc-shaped plate 7 is driven to rotate by rotating the pipe 5, the blocking strip 6 is extended into the gap and cooperates with the two arc-shaped plates 7 to wrap the positioning rod 3 under the action of the spring after the arc-shaped plate 7 removes the shielding of the blocking strip 6, and then grouting is performed in the space between the arc-shaped plate 7, the blocking strip 6 and the positioning rod 3.

[0040] The connecting mode of inserting the reinforcing steel bar into the reinforcing steel sleeve in the prior art is replaced by the positioning rod 3 which is horizontally moved into the gap between the two arc-shaped plates 7 from the gap and cooperates with the blocking strip 6 to wrap the positioning rod 3, so that the situation that the reinforcing steel bar is bent due to misalignment in the process of inserting the reinforcing steel bar into the reinforcing steel sleeve can be avoided; since the reinforcing steel bar needs to be inserted into the reinforcing steel sleeve in the prior art, the prefabricated upper wall 1 needs to be hoisted to a higher height, the higher the height, the greater the wind load that the prefabricated upper wall 1 suffers in the installation process, the more difficult it is to align the reinforcing steel bar with the reinforcing steel sleeve, the positioning rod 3 is connected by sliding into the gap in the installation process of the present application, so that the distance between the prefabricated upper wall 1 and the prefabricated lower wall 2 is short in the assembly process, the height at which the prefabricated upper wall 1 needs to be hoisted is relatively low, the prefabricated upper wall 1 is less affected by the wind load and shakes less, and the prefabricated upper wall 1 is more easily assembled in the process of assembling the shear wall.

[0041] In the embodiment, as shown in Figure 3 , 4 The end of the positioning rod 3 close to the rotating pipe 5 is coaxially connected with a positioning ring 8; a plurality of sliding grooves are uniformly formed in the circumferential side of the positioning ring 8; a pressing strip 9 is radially and slidingly connected in each sliding groove; a pushing column 10 which can extend into the positioning ring 8 and push the pressing strip 9 out of the sliding groove is slidingly connected in the rotating pipe 5; two symmetrical through grooves 11 are formed in the circumferential side of the rotating pipe 5; the pushing column 10 is connected with the blocking strip 6 through a connecting strip 12 which is slidingly arranged in the through groove 11; the rotating pipe 5 is rotated to make the arc-shaped plate 7 away from the blocking strip 6, the blocking strip 6 extends into the gap under the action of the spring, the blocking strip 6 and the arc-shaped plate 7 form a complete annular structure which is coaxial with the positioning rod 3, the pushing column 10 is synchronously slid into the positioning ring 8 and pushes the pressing strip 9 out of the sliding groove, and the plurality of pressing strips 9 are uniformly pressed against the inner wall of the annular structure.

[0042] Principles and beneficial effects of the above technical solutions:

[0043] When the positioning rod 3 is inserted between the two arc-shaped plates 7, the arc-shaped plates 7 are rotated by rotating the rotating tube 5, and when the arc-shaped plates 7 are removed from the blocking strip 6, the blocking strip 6 is inserted into the gap under the action of the spring. Since the pushing column 10 and the blocking strip 6 are connected by the connecting strip 12 which is slidably arranged in the through slot 11, when the blocking strip 6 moves, the pushing column 10 is synchronously moved. After the pushing column 10 is inserted into the positioning ring 8, the plurality of abutting strips 9 are pushed out of the sliding slot, and the abutting strips 9 are uniformly abutted against the inner wall of the ring of the annular structure.

[0044] Even when the positioning rod 3 is wrapped, the positioning rod 3 is not in contact with the circumferential side. When grouting is performed, the concrete is washed on the positioning rod 3, which pushes the positioning rod 3 to move, so that the prefabricated upper wall 1 at the upper end of the positioning rod 3 deviates from the predetermined installation position. At the same time, the wind load acting on the prefabricated upper wall 1 also affects the prefabricated upper wall 1. Under the double factors, the prefabricated upper wall 1 deviates during the grouting process. When the arc-shaped plate 7 and the blocking strip 6 wrap the positioning rod 3, the blocking strip 6 is synchronously inserted into the gap, the pushing column 10 can push the abutting strip 9 out, so that the abutting strip 9 is uniformly abutted against the inner wall of the ring of the annular structure, thereby fixing the positioning rod 3, avoiding the deviation of the positioning rod 3 during the grouting process, and driving the prefabricated upper wall 1 to deviate from the predetermined installation position.

[0045] In the embodiment, the inner diameter of the rotating tube 5 is greater than the inner diameter of the pushing column 10. When the pushing column 10 pushes the abutting strip 9 out, the positioning ring 8 and the rotating tube 5 have a channel (not shown in the figure) through which the grouting can enter. The channel is in communication with the rotating tube 5.

[0046] The principle and beneficial effects of the above technical solution are as follows:

[0047] During grouting, the concrete can enter the rotating tube 5 through the channel, then enter the channel, and finally enter the space between the annular structure and the positioning rod 3. The connection strength between the positioning rod 3 and the annular structure can be improved.

[0048] In the embodiment, the prefabricated lower wall 2 is provided with a lower grouting slot (not shown in the figure) which is in communication with the corresponding rotating tube 5.

[0049] The principle and beneficial effects of the above technical solution are as follows:

[0050] The concrete can enter the lower grouting slot along the rotating tube 5, which can enhance the connection strength of the prefabricated lower wall 2, the rotating tube 5, the positioning rod 3 and the annular structure, thereby enhancing the strength of the whole shear wall.

[0051] In the embodiment, as shown in the figure, Figure 2 , 4As shown, the prefabricated upper wall 1 is provided with an upper grouting groove 13 communicating with the outside, and the positioning rod 3 is provided with a positioning groove communicating with the positioning ring 8; the positioning groove is provided with a connecting hole 14 and a plurality of through holes 15 with a height lower than the arc-shaped plate 7, which communicate with the upper grouting groove 13; the upper grouting groove 13 communicates with the positioning groove through the connecting hole 14.

[0052] The principle and beneficial effects of the above technical solution are as follows:

[0053] During grouting, the concrete enters the connecting hole 14, the positioning groove and the through hole 15 in sequence through the upper grouting groove 13, and then enters the rotating pipe 5 through the channel and enters the lower grouting groove.

[0054] In this embodiment, as shown in Figure 2 , 5 , the prefabricated upper wall 1 is embedded with an upper steel plate 16 extending outward; the prefabricated lower wall 2 is embedded with a lower steel plate 17 extending outward; the opposite side walls of the upper steel plate 16 and the lower steel plate 17 are both provided with accommodating grooves; the opposite side walls of the accommodating groove of the lower steel plate 17 are rotatably connected with three pulleys 18; the opposite side walls of the accommodating groove of the upper steel plate 16 are rotatably connected with two rollers 19 staggered with the pulleys 18; the same contact belt 20 is wound on the rollers 19 and in contact with the pulleys 18; the contact belt 20 can be changed from tight to relaxed by rotating the pulleys 18.

[0055] The principle and beneficial effects of the above technical solution are as follows:

[0056] The prefabricated upper wall 1 is hoisted so that the upper steel plate 16 and the lower steel plate 17 are located in the same plane, at this time, the gap between the positioning rod 3 and the arc-shaped plate 7 is located in the same plane and has not been slid into the two arc-shaped plates 7, the pulleys 18 are in contact with the contact belt 20, the prefabricated upper wall 1 connected with the upper steel plate 16 is driven to slide by rotating the pulleys 18 through the contact belt 20, when the positioning rod 3 is slid into the two arc-shaped plates 7, the rollers 19 are controlled to rotate so that the contact belt 20 is in a relaxed state, under the action of gravity, the contact belt 20 is placed on the pulleys 18, and the upper steel plate 16 is installed on the lower steel plate 17.

[0057] The arrangement of the pulleys 18 and the contact belt 20 can change the state of the prefabricated upper wall 1 from suspended to contacted with the prefabricated lower wall 2 through the lower steel plate 17 during installation, so that the prefabricated upper wall 1 is more stable during installation, and the influence of wind load on the prefabricated upper wall 1 is reduced.

[0058] In this embodiment, as shown in Figure 5As shown, the contact strip 20 is disconnected on the side away from the pulley 18 to form two disconnected ends, and each disconnected end is connected to a baffle plate 21; a baffle hole is opened in the steel plate, which communicates with the receiving groove and is blocked by the baffle plate 21; the baffle hole extends through to the side of the precast upper wall 1 away from the precast lower wall 2; a reinforcing rod 22 is slidably installed in the baffle hole; a limiting hole (not shown in the figure) corresponding to the baffle hole is opened in the receiving groove of the lower steel plate 17; when the contact strip 20 is in contact with the pulley 18, the baffle plate 21 releases the baffle hole, and the reinforcing rod 22 passes through the two receiving grooves and is inserted into the limiting hole.

[0059] The principles and beneficial effects of the above technical solution:

[0060] Rotating pulley 18 loosens the contact belt 20. At the same time, the baffle plate 21 moves away from the baffle hole, and the reinforcing rod 22 slides into the receiving groove and is inserted into the limiting hole under the action of gravity. The setting of the reinforcing rod 22 can reinforce the precast upper wall 1 and the precast lower wall 2 and improve stability.

[0061] In this embodiment, as Figure 2 As shown, the upper steel plate 16 has a reinforcing hole 23, and the receiving groove is connected to the outside through the reinforcing hole 23.

[0062] The principles and beneficial effects of the above technical solution:

[0063] Grout is injected into the receiving groove through the reinforcing hole 23 to fix the reinforcing rod 22 and strengthen the connection between the upper steel plate 16 and the lower steel plate 17; then the upper steel plate 16 and the lower steel plate 17 are welded to improve the installation strength.

[0064] A novel installation method for prefabricated steel plate shear walls includes the following steps:

[0065] S1: Use hoisting tools to lift the precast upper wall 1, so that the upper steel plate 16 and the lower steel plate 17 are on the same horizontal plane, so that the roller 19 contacts the taut contact strip 20, and the positioning rod 3 is staggered from the arc plate 7, and the positioning rod 3 and the gap are on the same plane.

[0066] S2: The pulley 18 rotates, thereby driving the prefabricated upper wall 1 connected to the upper steel plate 16 to slide through the taut contact belt 20, so that the reinforcing rod 22 slides into the space between the two arc-shaped plates 7.

[0067] S3: Roller 19 rotates, causing contact belt 20 to change from a loose state to a tight state. Under the action of gravity, upper steel plate 16 is installed on lower steel plate 17.

[0068] S4: The shielding strip moves away from the shielding hole, and the reinforcing rod 22 passes through the receiving groove from the shielding hole and is inserted into the limiting hole;

[0069] S5: rotating the rotating pipe 5 to make the arc-shaped plate 7 away from the blocking strip 6, the blocking strip 6 is inserted into the gap between the two arc-shaped plates 7 under the action of the spring and forms a complete ring structure;

[0070] S6: the blocking strip 6 drives the push column 10 to insert into the positioning ring 8 through the connecting strip 12, and the plurality of abutting strips 9 extend from the sliding groove to make the abutting strips 9 tightly abut on the inner wall of the ring structure;

[0071] S7: grouting the prefabricated upper wall 1 through the upper grouting groove 13;

[0072] S8: grouting the accommodating groove through the reinforcing hole 23;

[0073] S9: welding the upper steel plate 16 and the lower steel plate 17;

[0074] S10: erecting the formwork with openings at the joint of the prefabricated upper wall 1 and the prefabricated lower wall 2;

[0075] S11: grouting the formwork through the openings to form the post-cast concrete 24.

[0076] The principle and beneficial effects of the above scheme are as follows:

[0077] In the construction, the prefabricated upper wall 1 is driven to slide by the pulley 18, so that the positioning rod 3 is positioned, avoiding the bending of the steel bar in the process of the steel bar penetrating the steel sleeve in the prior art. The positioning rod 3 is slowly moved between the two arc-shaped plates 7 by the way of driving the prefabricated upper wall 1 to slide by the pulley 18, which can better position. After positioning, the upper steel plate 16 contacts the lower steel plate 17 under the action of gravity, and the reinforcing rod 22 is inserted into the limiting hole, which can provide the connection strength of the prefabricated upper wall 1 and the prefabricated lower wall 2. At the same time, the abutting strips 9 tightly abut on the circumferential side of the ring structure, limiting the position of the positioning rod 3, avoiding the prefabricated upper wall 1 deviating from the predetermined installation position under the double action of grouting and wind load. In the grouting process, the concrete can enter the positioning rod 3 from the upper grouting groove 13 and reach the lower grouting groove of the prefabricated lower wall 2 along the rotating pipe 5, which can improve the strength of the whole shear wall. At the same time, the accommodating groove in the steel plate is grouted through the reinforcing hole 23, which can further improve the strength of the prefabricated upper wall 1 and the prefabricated lower wall 2 connected by the reinforcing rod 22. Finally, the formwork is erected to form the post-cast concrete 24, which can further improve the strength of the whole shear wall.

[0078] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present application rather than limit the present application. Although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present application.

Claims

1. A fabricated steel plate shear wall, characterized by: The application relates to a prefabricated upper wall and a prefabricated lower wall, wherein the prefabricated upper wall is connected with positioning rods on one side of the prefabricated lower wall; fixed pipes are arranged on the corresponding side walls of the prefabricated lower wall; rotating pipes are coaxially arranged in the fixed pipes; the fixed pipes outside the rotating pipes are provided with blocking strips capable of extending out of the fixed pipes; the rotating pipes are coaxially connected with two arc-shaped plates capable of blocking the corresponding blocking strips, and the two arc-shaped plates have a gap; when the positioning rods slide into the gap between the two arc-shaped plates, the rotating pipes rotate, the arc-shaped plates move away from the blocking strips, and the blocking strips can extend into the gap; the end of the positioning rod close to the rotating pipe is coaxially connected with a positioning ring; the positioning ring is uniformly provided with a plurality of sliding grooves on the circumferential side; a plurality of abutting strips are radially and slidingly connected in each sliding groove; a pushing column is slidingly connected in the rotating pipe; a through groove is formed in the circumferential side of the rotating pipe; the pushing column and the blocking strip are connected through a connecting strip slidingly arranged in the through groove; the blocking strip extends into the gap under the action of a spring; the blocking strip and the arc-shaped plate form a complete ring structure coaxial with the positioning rod; the pushing column synchronously slides into the positioning ring and pushes the abutting strips out; the plurality of abutting strips are uniformly abutted against the inner wall of the ring structure.

2. The fabricated steel plate shear wall according to claim 1, wherein: The inner diameter of the rotating pipe is larger than the inner diameter of the pushing column, and the positioning ring and the rotating pipe have a channel capable of allowing grouting to enter; the channel is in communication with the rotating pipe.

3. The fabricated steel plate shear wall of claim 2, wherein: The prefabricated lower wall is provided with a lower grouting groove in communication with the corresponding rotating pipe.

4. The fabricated steel plate shear according to claim 3, wherein: The prefabricated upper wall is provided with an upper grouting groove in communication with the outside; the positioning rod is provided with a positioning groove in communication with the positioning ring; the circumferential side of the positioning groove is provided with a connecting hole in communication with the upper grouting groove and a plurality of through holes with a height lower than that of the arc-shaped plate; the upper grouting groove is in communication with the positioning groove through the connecting hole.

5. The fabricated steel plate shear wall of claim 4, wherein: Steel plates are embedded in the prefabricated upper wall and the prefabricated lower wall; the opposite side walls of the two steel plates are provided with accommodating grooves; a plurality of pulleys are rotatably arranged in one of the accommodating grooves; a plurality of rollers are rotatably arranged in the other accommodating groove and are staggered with the pulleys; the same contact belt is wound on the pulleys and the rollers; the contact belt can be changed from being tight to being loose through the rotation of the pulleys; the prefabricated upper wall can be moved through the rotation of the pulleys.

6. The fabricated steel plate shear wall of claim 5, wherein: The side of the contact belt away from the pulleys has two disconnected ends; the steel plate embedded in the prefabricated upper wall is provided with a shielding hole in communication with the accommodating groove and blocked by the disconnected ends; a reinforcing rod is slidingly arranged in the shielding hole; the accommodating groove of the lower steel plate is provided with a limiting hole corresponding to the shielding hole; when the contact belt is loose, the shielding plate unblocks the shielding hole, and the reinforcing rod passes through the accommodating groove and is inserted into the limiting hole.

7. The fabricated steel plate shear wall of claim 6, wherein: The upper steel plate is provided with a reinforcing hole, and the accommodating groove is in communication with the outside through the reinforcing hole.

8. The method for assembling a fabricated steel plate shear wall according to any one of claims 1-7, wherein, The application further discloses a construction method of the prefabricated upper wall and the prefabricated lower wall, which comprises the following steps: S1: lifting the prefabricated upper wall, so that the upper steel plate and the lower steel plate are located on the same horizontal plane, the rollers contact the tight contact belt, the positioning rods are staggered with the arc-shaped plates, and the positioning rods and the gap are located on the same plane; S2: rotating the pulleys to make the prefabricated upper wall slide and make the reinforcing rod slide into the gap between the two arc-shaped plates; S3: rotating the rollers to change the contact belt from being loose to being tight, and positioning the upper steel plate on the lower steel plate; S4: the disconnected ends unblock the shielding hole, and the reinforcing rod is inserted into the limiting hole; S5: rotating the rotating pipe, inserting the blocking strip into the gap between the two arc-shaped plates, and forming a complete ring structure with the arc-shaped plates. S6: push the column into the positioning ring, so that several abutting strips extend from the sliding groove and abut uniformly in the inner wall of the ring structure; S7: grout the prefabricated upper wall through the upper grouting groove; S8: grout the accommodating groove through the reinforcing hole; S9: weld the upper steel plate and the lower steel plate; S10: set the formwork with openings at the joint of the prefabricated upper wall and the prefabricated lower wall; S11: grout the formwork through the openings to form the post-cast area concrete.

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