Integrated prefabricated shear wall

Abstract

The application relates to the technical field of building construction, in particular to an integrated prefabricated shear wall, which comprises first and second prefabricated concrete plates that are parallel to each other, a steel mesh frame is arranged on the opposite side wall of the first and second prefabricated concrete plates, a pouring gap is left between the opposite sides of the first and second prefabricated concrete plates, concrete is poured in the pouring gap, and a pull bar plate is arranged in the gap. The beneficial effects are as follows: the shear wall distribution steel and the two-side prefabricated wall plate are separated, the thickness of the prefabricated wall plate is 20 mm, the weight is lighter, the component hoisting and transportation are facilitated, the shear wall distribution steel is arranged on the inner surface of the prefabricated wall plate, the upper and lower layer prefabricated plate distribution steels can be connected through lapping, the connection between the prefabricated wall plate and the surrounding cast-in-situ structure component is realized through secondary pouring of concrete, and the structural safety and integrity are improved.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to an integrated precast shear wall. Background Technology

[0002] Precast shear wall components are widely used in prefabricated concrete structure engineering. Traditional prefabricated shear walls are prefabricated in the factory and transported to the site for installation. This results in a large amount of precast concrete, low transportation efficiency, and difficult installation. The market needs a shear wall that is lightweight, has high transportation efficiency, simple hoisting procedures, and reliable installation technology.

[0003] Currently, similar precast shear walls include precast double-sided composite concrete shear walls, which consist of two precast concrete wall panels connected by steel trusses, structural steel, or steel strips to form a component with a central cavity. The thickness of the precast concrete wall panels is not less than 50mm. The shear wall distribution reinforcement is pre-embedded in the precast concrete walls on both sides. The precast wall panels of each layer are vertically connected by grouting sleeves. The construction process is cumbersome, and the quality is not easy to guarantee. Moreover, when connecting precast shear walls, it is easy for the reinforcement cage to fall off, resulting in delamination of the shear wall, which reduces the load-bearing strength of the shear wall and makes it prone to falling off and damage. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated precast shear wall to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An integrated precast shear wall includes a first precast concrete slab and a second precast concrete slab that are parallel to each other. A steel mesh is provided on the side wall of the first precast concrete slab and the second precast concrete slab facing each other. A pouring gap is left between the first precast concrete slab and the second precast concrete slab facing each other. Concrete is poured into the pouring gap, and a tie plate is provided in the gap. The first precast concrete slab, the second precast concrete slab and the tie plate are fixedly connected to each other by tie bolts. The tie plate is provided with a sliding block that is engaged with the steel mesh.

[0007] Preferably, the steel mesh is composed of multiple sets of longitudinal and transverse distribution bars that are perpendicularly intersecting each other, and the intersections of the longitudinal and transverse distribution bars are fixedly welded.

[0008] Preferably, multiple sets of the tie plates are arranged on the outside of the intersection of the longitudinal and transverse distribution bars. A column is provided on the side wall of the tie plate near the steel mesh. The sliding block is slidably sleeved on the column. A telescopic limit frame is provided on one side of the sliding block. The limit frame is inserted at the intersection of the longitudinal and transverse distribution bars.

[0009] Preferably, the limiting frame consists of an end plate and four sets of insert rods. The end plate is slidably installed in the inner cavity of the sliding block, and the four sets of insert rods are inserted into the outer wall at the intersection of the longitudinal and transverse distribution ribs.

[0010] Preferably, the inner cavity of the sliding block is configured as a telescopic inner cavity, the end plate is slidably installed in the telescopic inner cavity, and a first spring is provided on the side of the end plate near the insertion rod. One end of the first spring abuts against the side wall of the telescopic inner cavity, and the other end of the first spring abuts against the end plate.

[0011] Preferably, an end cap is provided on one side of the telescopic inner cavity, and a screw hole is provided on the end cap. A bearing seat is provided on the side of the end plate away from the insertion rod. A screw is threadedly inserted into the screw hole. One end of the screw extends to the outside of the telescopic inner cavity, and the other end of the screw is rotatably mounted on the bearing seat.

[0012] Preferably, a pressure groove is provided in the middle of the side of the telescopic inner cavity near the steel mesh frame, and a top rod is installed laterally in the pressure groove. One end of the top rod extends to the outside of the sliding block and abuts against the outer wall of the longitudinally distributed reinforcement.

[0013] Preferably, a second spring is provided in the pressure groove, the second spring is sleeved on the top rod, the pressure groove is connected to the telescopic inner cavity through a through hole, and a top block is provided on the end plate that is slidably inserted into the through hole, the top block abutting against the top rod.

[0014] Preferably, the sliding block is provided with a through hole, the tie bolt is inserted laterally into the through hole, both ends of the tie bolt pass through the first precast concrete slab and the second precast concrete slab, and the end of the tie bolt is fixed by a locking nut that is threaded and rotated, and the locking nut is pressed against the first precast concrete slab and the second precast concrete slab.

[0015] Preferably, multiple sets of vertically spaced positioning grooves are provided on the side wall of the first and second precast concrete slabs opposite to each other. The gap between the vertically spaced positioning grooves is directly opposite the intersection of the longitudinal and transverse distribution bars. The ends of the four sets of insert rods are inserted into the positioning grooves.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This invention employs a separate structure for the shear wall distribution reinforcement and the precast wall panels on both sides. The precast wall panels are 20mm thick, making them lighter and easier to hoist and transport. The shear wall distribution reinforcement is arranged on the inner surface of the precast wall panels. The distribution reinforcement of the upper and lower precast panels can be lapped together. The connection between the precast wall panels and the surrounding cast-in-place structural components is achieved through secondary concrete pouring, which improves the structural safety and integrity.

[0018] By setting sliding blocks to slide on the tie plate, the distribution height of the distribution reinforcement connection position is adapted, thereby using the insert rod to limit the staggered position of the distribution reinforcement connection, avoiding delamination during the pouring or forming process, and improving the structural strength of the steel mesh. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is the front view of the present invention;

[0021] Figure 3 This is a top view of the present invention;

[0022] Figure 4 for Figure 1 Enlarged view of the structure at point A in the middle;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the tie plate of the present invention.

[0024] In the diagram: 1. First precast concrete slab; 2. Second precast concrete slab; 3. Tie plate; 4. Tie bolt; 5. Column; 6. Transverse distribution reinforcement; 7. Longitudinal distribution reinforcement; 8. Sliding block; 9. Top rod; 10. Screw; 11. Limiting frame; 12. Locking nut; 13. Positioning groove; 14. Through hole; 15. First spring; 16. Second spring; 17. End plate; 18. End cap; 19. Screw hole; 20. Telescopic inner cavity; 21. Bearing seat; 22. Top block; 23. Pressure groove; 24. Through hole. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1 to 5 The present invention provides a technical solution:

[0027] Example 1: An integrated precast shear wall, comprising a first precast concrete slab 1 and a second precast concrete slab 2 that are parallel to each other. A steel mesh is provided on the opposite side wall of the first precast concrete slab 1 and the second precast concrete slab 2. A pouring gap is left between the opposite sides of the first precast concrete slab 1 and the second precast concrete slab 2. Concrete is poured into the pouring gap, and a tie plate 3 is provided in the gap. The first precast concrete slab 1, the second precast concrete slab 2 and the tie plate 3 are fixedly connected by tie bolts 4. A sliding block 8 is provided on the tie plate 3 that is engaged with the steel mesh.

[0028] By adopting a separate structure of steel mesh and the first precast concrete slab 1 and the second precast concrete slab 2 on both sides, the precast wall panel is 20mm thick and lighter, which facilitates the hoisting and transportation of components. The steel mesh is arranged on the inner surface of the precast concrete slab. The steel mesh on the upper and lower precast concrete slabs can be lapped and connected. The connection between the precast concrete slab and the surrounding cast-in-place structural components is achieved by secondary pouring of concrete, which improves the structural safety and integrity.

[0029] By setting sliding blocks 8 to fit and insert onto the steel mesh, the staggered positions on the steel mesh are evenly limited to the side wall of the concrete slab, further limiting the structural strength of the steel mesh and preventing cracking and delamination after the concrete is poured into the pouring gap, thus improving the molding quality.

[0030] Example 2: Based on Example 1, in order to limit the intersecting position of the steel mesh, the steel mesh is composed of multiple sets of longitudinal distribution bars 7 and transverse distribution bars 6 that are perpendicularly intersecting each other. The longitudinal distribution bars 7 and transverse distribution bars 6 are fixedly welded at the intersection. Multiple sets of tie plates 3 are set on the outside of the intersection of the longitudinal distribution bars 7 and transverse distribution bars 6. A column 5 is set on the side wall of the tie plate 3 near the steel mesh. A sliding block 8 is slidably sleeved on the column 5. A telescopic limit frame 11 is set on one side of the sliding block 8. The limit frame 11 is inserted at the intersection of the longitudinal distribution bars 7 and transverse distribution bars 6. The limit frame 11 is composed of an end plate 17 and four sets of insert rods. The end plate 17 is slidably installed in the inner cavity of the sliding block 8. The four sets of insert rods are inserted on the outer wall at the intersection of the longitudinal distribution bars 7 and transverse distribution bars 6.

[0031] The sliding adjustment of the sliding block 8 is achieved by using the column 5, so that the height of the sliding block 8 is adapted to the intersection of the longitudinal distribution rib 7 and the transverse distribution rib 6. At the same time, the transverse insertion of the four sets of plug rods is used to insert them into the four corners of the staggered position, thereby achieving the purpose of limiting the staggered position.

[0032] Example 3: Based on Example 2, in order to facilitate the adjustment of the limiting frame 11, the inner cavity of the sliding block 8 is set as a telescopic inner cavity 20. The end plate 17 is slidably installed in the telescopic inner cavity 20. A first spring 15 is provided on the side of the end plate 17 near the insertion rod. One end of the first spring 15 abuts against the side wall of the telescopic inner cavity 20, and the other end of the first spring 15 abuts against the end plate 17. An end cap 18 is provided on one side of the telescopic inner cavity 20. A screw hole 19 is provided on the end cap 18. A bearing seat 21 is provided on the side of the end plate 17 away from the insertion rod. A screw 10 is threadedly inserted into the screw hole 19. One end of the screw 10 extends to the outside of the telescopic inner cavity 20, and the other end of the screw 10 is rotatably mounted on the bearing seat 21.

[0033] The first spring 15 keeps the limiting frame 11 away from the steel mesh frame, which facilitates the height adjustment of the sliding block 8. The screw 10 rotates and squeezes in the screw hole 19, driving the end plate 17 and the limiting frame 11 to move laterally, thereby squeezing the first spring 15. This allows the limiting frame 11 to be inserted outside the intersection of the longitudinal distribution bar 7 and the transverse distribution bar 6, thus fixing the sliding block 8 while supporting the steel mesh frame.

[0034] Example 4: Based on Example 3, in order to further improve the support strength, a pressure groove 23 is provided in the middle of the side of the telescopic inner cavity 20 near the steel mesh frame. A top rod 9 is installed laterally in the pressure groove 23. One end of the top rod 9 extends to the outside of the sliding block 8 and abuts against the outer wall of the longitudinal distribution reinforcement 7. A second spring 16 is provided in the pressure groove 23 and is sleeved on the top rod 9. The pressure groove 23 is connected to the telescopic inner cavity 20 through the through hole 24. A top block 22 is provided on the end plate 17 and is slidably inserted into the through hole 24. The top block 22 abuts against the top rod 9.

[0035] By setting a second spring 16, the push rod 9 is kept away from the longitudinal distribution rib 7. During the extrusion process of the screw 10, the push block 22 is driven to extrude the push rod 9, and the push rod 9 is driven to be extruded and pressed against the longitudinal distribution rib 7.

[0036] Example 5: Based on Example 4, in order to improve assembly accuracy and ease of assembly, a through-hole 14 is provided on the sliding block 8, the tie bolt 4 is horizontally inserted into the through-hole 14, both ends of the tie bolt 4 pass through the first precast concrete slab 1 and the second precast concrete slab 2, and the end of the tie bolt 4 is fixed by a locking nut 12 threadedly installed, and the locking nut 12 is pressed onto the first precast concrete slab 1 and the second precast concrete slab 2.

[0037] The tie bolt 4 is fixed by setting a through-hole 14.

[0038] On the opposite side wall of the first precast concrete slab 1 and the second precast concrete slab 2, there are multiple sets of positioning grooves 13 that are spaced vertically. The gap between the positioning grooves 13 is directly opposite to the intersection of the longitudinal distribution reinforcement 7 and the transverse distribution reinforcement 6. The ends of the four sets of insert rods are inserted into the positioning grooves 13.

[0039] By setting the positioning groove 13, the longitudinal distribution bars 7 and the transverse distribution bars 6 are positioned and arranged vertically. Then, by inserting the rod into the positioning groove 13, a staggered connection is formed, which further improves the connection between the precast concrete slab and the secondary pouring and increases the strength of the shear wall.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated precast shear wall, characterized in that: The precast shear wall includes a first precast concrete slab (1) and a second precast concrete slab (2) that are parallel to each other. A steel mesh is provided on the opposite side wall of the first precast concrete slab (1) and the second precast concrete slab (2). A pouring gap is left between the opposite sides of the first precast concrete slab (1) and the second precast concrete slab (2). Concrete is poured into the pouring gap. A tie plate (3) is provided in the gap. The first precast concrete slab (1), the second precast concrete slab (2) and the tie plate (3) are fixedly connected by tie bolts (4). A sliding block (8) is provided on the tie plate (3) and snapped onto the steel mesh. The steel mesh is composed of multiple sets of longitudinal distribution bars (7) and transverse distribution bars (6) that are perpendicular to each other, and the intersection of the longitudinal distribution bars (7) and transverse distribution bars (6) is fixedly welded. Multiple sets of the tie plates (3) are set on the outside of the intersection of the longitudinal distribution bars (7) and the transverse distribution bars (6). A column (5) is set on the side wall of the tie plate (3) near the steel mesh. The sliding block (8) is slidably sleeved on the column (5). A telescopic limit frame (11) is set on one side of the sliding block (8). The limit frame (11) is inserted at the intersection of the longitudinal distribution bars (7) and the transverse distribution bars (6). The limiting frame (11) is composed of an end plate (17) and four sets of insert rods. The end plate (17) is slidably installed in the inner cavity of the sliding block (8). The four sets of insert rods are inserted into the outer wall at the intersection of the longitudinal distribution ribs (7) and the transverse distribution ribs (6). The inner cavity of the sliding block (8) is configured as a telescopic inner cavity (20). The end plate (17) is slidably installed in the telescopic inner cavity (20). A first spring (15) is provided on the side of the end plate (17) near the insertion rod. One end of the first spring (15) abuts against the side wall of the telescopic inner cavity (20), and the other end of the first spring (15) abuts against the end plate (17). An end cap (18) is provided on one side of the telescopic inner cavity (20), and a screw hole (19) is provided on the end cap (18). A bearing seat (21) is provided on the side of the end plate (17) away from the insertion rod. A screw (10) is threadedly inserted into the screw hole (19). One end of the screw (10) extends to the outside of the telescopic inner cavity (20), and the other end of the screw (10) is rotatably mounted on the bearing seat (21).

2. The integrated precast shear wall according to claim 1, characterized in that: The telescopic inner cavity (20) has a pressure groove (23) in the middle of the side near the steel mesh frame. A top rod (9) is installed in the pressure groove (23) by a horizontal pop-out. One end of the top rod (9) extends to the outside of the sliding block (8) and abuts against the outer wall of the longitudinal distribution bar (7).

3. The integrated precast shear wall according to claim 2, characterized in that: A second spring (16) is provided in the pressure groove (23), and the second spring (16) is sleeved on the top rod (9). The pressure groove (23) is connected to the telescopic inner cavity (20) through the through hole (24). A top block (22) is provided on the end plate (17) and is slidably inserted into the through hole (24). The top block (22) abuts against the top rod (9).

4. The integrated precast shear wall according to claim 1, characterized in that: The sliding block (8) is provided with a through hole (14), and the tie bolt (4) is inserted horizontally into the through hole (14). The two ends of the tie bolt (4) pass through the first precast concrete slab (1) and the second precast concrete slab (2). The end of the tie bolt (4) is fixed by a locking nut (12) that is threaded and rotated. The locking nut (12) is pressed onto the first precast concrete slab (1) and the second precast concrete slab (2).

5. An integrated precast shear wall according to claim 1, characterized in that: On the opposite side wall of the first precast concrete slab (1) and the second precast concrete slab (2), there are multiple sets of positioning grooves (13) spaced vertically. The gap between the positioning grooves (13) is directly opposite to the intersection of the longitudinal distribution reinforcement (7) and the transverse distribution reinforcement (6). The ends of the four sets of insert rods are inserted into the positioning grooves (13).

Images