Prefabricated shear wall and method for installing the same

Abstract

This invention discloses a prefabricated shear wall and its installation method. The shear wall includes prefabricated shear wall bodies. Each prefabricated shear wall body has dovetail grooves on both sides. When two horizontally adjacent prefabricated shear wall bodies are spliced ​​together, the dovetail grooves form a pouring space. Concrete is poured into the pouring space, connecting the two horizontally adjacent prefabricated shear wall bodies into a whole. The bottom of the prefabricated shear wall body has an assembly groove, and the front of the prefabricated shear wall body has an operating port communicating with the assembly groove. When the prefabricated shear wall body is placed on a beam slab, and the upper layer of prefabricated shear wall body is placed on the lower layer, the vertical distribution reinforcement on the beam slab or the lower layer of prefabricated shear wall body is inserted into the assembly groove. Concrete is poured into the assembly groove through the operating port, connecting the prefabricated shear wall body with the beam slab and the upper and lower layers of prefabricated shear wall bodies into a whole. This invention relates to the field of prefabricated building technology and can solve problems such as structural damage to prefabricated shear walls and the easy collapse of concrete from the connecting grooves in existing technologies.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building technology, and in particular to a prefabricated shear wall and its installation method. Background Technology

[0002] The existing connection methods for precast assembled shear walls along the building height mainly include grouting sleeve connection technology, pre-drilled hole grout anchor lap connection technology, and cast-in-place strip connection method. Among them, grouting sleeve connection is the most widely used and the construction technology is relatively mature in actual projects, but there are still difficulties in on-site connection.

[0003] Chinese utility model patent ZL202223430527.7 discloses a novel connection structure for prefabricated shear walls. This structure involves aligning connecting grooves with the vertical reinforcing bars of the beams and slabs, binding the vertical reinforcing bars together with the horizontal connecting bars, and then injecting concrete into the connecting grooves. This eliminates the need for sleeve connections, improving work efficiency. When splicing shear walls, the connecting reinforcing bars on the adjacent faces of two adjacent shear walls are simultaneously threaded into a connecting sleeve. The two adjacent shear walls are then combined using the connecting sleeve, and the prefabricated shear wall body is supported by an integrally formed foot. Finally, concrete is injected between the prefabricated shear wall body and the beams and slabs.

[0004] The existing precast shear wall structure is relatively complex. During transportation, the precast shear wall is prone to structural damage, which is detrimental to the transport of the shear wall. Furthermore, the exposed connecting grooves are prone to concrete collapse during pouring, hindering convenient concrete pouring. Therefore, there is a need to provide a prefabricated shear wall and its installation method that can solve the problems of structural damage to precast shear walls and concrete collapse from connecting grooves in the existing technology. Summary of the Invention

[0005] The purpose of this invention is to provide a prefabricated shear wall and its installation method, which can solve the problems of structural damage and easy collapse of concrete from the connecting groove in the existing prefabricated shear wall.

[0006] This invention is implemented as follows:

[0007] A prefabricated shear wall includes precast shear wall panels. Dovetail grooves are formed at both ends of the precast shear wall panels. When two horizontally adjacent precast shear wall panels are spliced, the dovetail grooves at the ends of the panels form a casting space. Concrete is poured into this casting space, connecting the two horizontally adjacent precast shear wall panels into a single unit. An assembly groove is formed at the bottom of the precast shear wall panel, and an operating opening communicating with the assembly groove is formed on the front of the panel. When the precast shear wall panels are placed on beams or slabs, and an upper layer of precast shear wall panels is placed on a lower layer, the vertical reinforcing bars on the beams or slabs or the lower layer of precast shear wall panels are inserted into the assembly groove. Concrete is poured into the assembly groove through the operating opening, connecting the precast shear wall panels with the beams or slabs, and the upper and lower layers of precast shear wall panels into a single unit.

[0008] The assembly slot is provided with several first reinforcing bars at intervals, and the several first reinforcing bars are tied to the vertical distribution bars.

[0009] Several second reinforcing bars are spaced apart in the dovetail groove at one end of the precast shear wall. The axial direction of the second reinforcing bars is arranged along the wall surface of the precast shear wall, and the second reinforcing bars are inserted into the dovetail groove at the other end of the adjacent precast shear wall.

[0010] Several third reinforcing bars are spaced apart in the dovetail groove on one side of the precast shear wall. The axial direction of the third reinforcing bars is arranged along the thickness direction of the precast shear wall, and the third reinforcing bars are perpendicularly and staggered with the second reinforcing bars.

[0011] The precast shear wall has hoisting slots on both sides of its bottom. The hoisting slots are located between the dovetail slot and the assembly slot, and the hoisting slots and the assembly slots are connected by a through slot.

[0012] The precast shear wall has detachable legs at the bottom, and an assembly block is integrally formed on the top of the legs. The assembly block is matched and inserted into the hoisting groove, and the top of the assembly block has a disassembly groove. Several square grooves are formed at intervals on both sides of the legs.

[0013] The bottom of the hoisting groove is integrally formed with a limiting block, which is located below the through groove; the top of the assembly block has a groove that matches the limiting block.

[0014] An installation method for a prefabricated shear wall includes the following steps:

[0015] Step 1: Pass the hoisting rope through the hoisting slot at the bottom of the precast shear wall, secure the precast shear wall with the hoisting rope, and transport the precast shear wall to the assembly point;

[0016] Step 2: After the precast shear wall is lifted close to the assembly point, insert the assembly block of the support into the lifting slot, so that the lifting rope is locked in the disassembly slot of the assembly block, and lift the precast shear wall and its support to the assembly point simultaneously, so that the vertical distribution bars on the beam or the lower layer of the precast shear wall are inserted into the assembly slot, and remove the lifting rope.

[0017] Step 3: Tie the first reinforcing bar in the assembly slot to the vertical distribution bars of the beam slab or the lower layer of precast shear wall through the operating port, and inject concrete into the assembly slot through the operating port to connect the beam slab with the precast shear wall and the upper and lower layers of precast shear walls into a whole.

[0018] Step 4: When splicing two horizontally adjacent precast shear walls, the side ends of the two precast shear walls are fitted together. The second reinforcing bar in the dovetail groove of one precast shear wall is inserted into the dovetail groove of the other precast shear wall. Concrete is poured into the casting space formed by splicing the dovetail grooves of the two precast shear walls, so that the two horizontally adjacent precast shear walls are connected into a whole.

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

[0020] 1. This invention, through the setting of assembly groove, first reinforcing steel bar and operating port, allows for convenient binding of the precast shear wall to the vertical distribution bars at the top of the lower shear wall when the precast shear wall is placed at the connection point of the lower shear wall. Concrete can also be poured directly through the operating port. While assembling is convenient, with the cooperation of dovetail groove, second reinforcing steel bar and third reinforcing steel bar, when two adjacent precast shear walls are assembled, pouring concrete into the dovetail groove can ensure the strength of the connection between the two adjacent precast shear walls. At the same time, the whole structure has no protruding structure, making transportation more convenient.

[0021] 2. The present invention provides support for the stable hoisting of precast shear walls by setting up hoisting slots. With the setting of legs and assembly blocks, stable support can be provided for the precast shear walls. With the setting of through slots, concrete can pass through the through slots to reinforce the connection between the assembly plates and the precast shear walls. Furthermore, with the setting of square slots, the connection strength between the legs and the poured concrete is further improved. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram (top view) of the prefabricated shear wall of the present invention.

[0023] Figure 2 This is a structural schematic diagram of the prefabricated shear wall of the present invention (viewed from below, legs not shown).

[0024] Figure 3 This is a partial structural schematic diagram of the prefabricated shear wall of the present invention.

[0025] In the diagram, 1 is the precast shear wall; 2 is the dovetail groove; 3 is the assembly groove; 4 is the operating opening; 5 is the first reinforcing bar; 6 is the second reinforcing bar; 7 is the third reinforcing bar; 8 is the hoisting groove; 9 is the through groove; 10 is the limiting block; 11 is the support leg; 12 is the assembly block; 13 is the square groove; and 14 is the disassembly groove. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] Please see the appendix Figure 1 To be continued Figure 3 A prefabricated shear wall includes a precast shear wall body 1. Dovetail grooves 2 are provided at both ends of the precast shear wall body 1. When two horizontally adjacent precast shear wall bodies 1 are spliced, the dovetail grooves 2 at the sides of the precast shear wall body 1 form a pouring space. Concrete is poured into this pouring space, connecting the two horizontally adjacent precast shear wall bodies 1 into a whole. An assembly groove 3 is formed at the bottom of the precast shear wall body 1, and an operating port 4 communicating with the assembly groove 3 is formed on the front of the precast shear wall body 1. The precast shear wall body 1 is set on a beam slab. When an upper precast shear wall body 1 is set on a lower precast shear wall body 1, the vertical distribution bars (not shown in the figure) on the beam slab or the lower precast shear wall body 1 are inserted into the assembly groove 3. Concrete is poured into the assembly groove 3 through the operating port 4, connecting the precast shear wall body 1 with the beam slab and the upper and lower precast shear wall bodies 1 into a whole.

[0028] By setting up the dovetail groove 2 and the injection of concrete inside it, the connection between two horizontally adjacent precast shear wall 1 is made more solid and reliable. The cross-sectional shape and size of the dovetail groove 2 can also be adaptively adjusted according to the actual pouring requirements.

[0029] The assembly slot 3 is used for inserting vertical distribution bars and injecting concrete, thereby ensuring that the precast shear wall 1 can be reliably connected to the beams and slabs, and the upper and lower precast shear walls 1 into a whole.

[0030] The assembly groove 3 is provided with several first reinforcing steel bars 5 at intervals, and the several first reinforcing steel bars 5 are tied to the vertical distribution bars.

[0031] The installation of several first reinforcing bars 5 makes the connection between the precast shear wall 1 and the beams and slabs, as well as the upper and lower layers of precast shear walls 1, more robust and reliable. The installation of the operating port 4 facilitates the binding connection between the first reinforcing bars 5 and the vertical distribution bars.

[0032] The quantity, spacing, and specifications of the first reinforcing steel bars 5 can be adjusted adaptively according to actual connection requirements.

[0033] Several second reinforcing bars 6 are spaced apart in the dovetail groove 2 at one end of the precast shear wall 1. The axial direction of the second reinforcing bars 6 is arranged along the wall surface direction of the precast shear wall 1, and the second reinforcing bars 6 are inserted into the dovetail groove 2 at the other end of the adjacent precast shear wall 1.

[0034] One end of the second reinforcing bar 6 is anchored inside the precast shear wall 1, and the other end of the second reinforcing bar 6 is inserted into the dovetail groove 2 of the horizontally adjacent precast shear wall 1, thereby improving the connection strength between the two horizontally adjacent precast shear wall 1s. The quantity, spacing, and specifications of the second reinforcing bars 6 can be adaptively adjusted according to actual connection requirements.

[0035] Several third reinforcing bars 7 are spaced apart in the dovetail groove 2 on one side of the precast shear wall 1. The axial direction of the third reinforcing bars 7 is arranged along the wall thickness direction of the precast shear wall 1, and the third reinforcing bars 7 are perpendicularly and staggered with the second reinforcing bars 6.

[0036] Preferably, the third reinforcing bar 7 is located at the bottom of the second reinforcing bar 6, and both ends of the third reinforcing bar 7 are anchored in the front and back concrete of the dovetail groove 2. The third reinforcing bar 7 supports the second reinforcing bar 6, preventing the second reinforcing bar 6 from bending significantly when pouring concrete into the dovetail groove 2. The number and spacing of the third reinforcing bar 7 are consistent with the number and spacing of the second reinforcing bar 6, and the specifications of the third reinforcing bar 7 can be adaptively adjusted according to actual connection requirements.

[0037] The precast shear wall 1 has a hoisting groove 8 on both sides of its bottom. The hoisting groove 8 is located between the dovetail groove 2 and the assembly groove 3, and the hoisting groove 8 and the assembly groove 3 are connected by a through groove 9.

[0038] With the installation of the hoisting slot 8, the hoisting rope can be passed through the precast shear wall 1, which facilitates the binding and hoisting of the precast shear wall 1, thereby facilitating the connection of the precast shear wall 1 with the beams or the lower precast shear wall 1 and the injection of concrete.

[0039] The precast shear wall 1 has a detachable support leg 11 at the bottom, and an assembly block 12 is integrally formed on the top of the support leg 11. The assembly block 12 is matched and inserted into the hoisting groove 8, and the top of the assembly block 12 has a disassembly groove 14. Several square grooves 13 are formed at intervals on both sides of the support leg 11.

[0040] By using supports 11 with several square grooves 13, the supports 11 can directly contact the top of the beams / slabs or the lower precast shear wall 1 before pouring concrete, thereby improving the reliability of the connection between the precast shear wall 1 and the beams / slabs, and between the upper and lower precast shear walls 1. When pouring concrete, if concrete overflows from the gap between the supports 11 and the precast shear wall 1, wooden boards can be used to prevent it from overflowing.

[0041] The number of supports 11 can be adjusted according to actual connection requirements. Preferably, the supports can be symmetrically arranged on both sides of the bottom of the precast shear wall 1.

[0042] Meanwhile, the installation and disassembly slot 14 allows the lifting rope to pass through it without affecting the insertion of the assembly block 12 of the support leg 11 into the lifting slot 8, or the binding and lifting of the lifting rope. It also facilitates the installation and disassembly of the lifting rope.

[0043] The bottom of the hoisting groove 8 is integrally formed with a limiting block 10, which is located below the through groove 9; the top of the assembly block 12 has a groove (not shown in the figure) that matches the limiting block 10, making the insertion of the assembly block 12 in the hoisting groove 8 more stable and less prone to slippage.

[0044] Please see the appendix Figure 1 To be continued Figure 3 An installation method for a prefabricated shear wall includes the following steps:

[0045] Step 1: Pass the hoisting rope through the hoisting slot 8 at the bottom of the precast shear wall 1, and secure the precast shear wall 1 with the hoisting rope. Then, use a crane to hoist the precast shear wall 1 onto the transport vehicle and transport it to the assembly point.

[0046] Step 2: After the precast shear wall 1 is lifted close to the assembly point, insert the assembly block 12 of the support leg 11 into the lifting slot 8, so that the lifting rope is locked in the disassembly slot 14 of the assembly block 12. Simultaneously lift the precast shear wall 1 and its support leg 11 to the assembly point, so that the vertical distribution bars on the beam or the lower layer of the precast shear wall 1 are inserted into the assembly slot 3, and remove the lifting rope.

[0047] At this time, the support 11 is placed on the top surface of the beam slab or the precast shear wall 1 of the lower layer.

[0048] Step 3: Tie the first reinforcing bar 5 in the assembly slot 3 to the vertical distribution bars of the beam slab or the lower precast shear wall 1 through the operating port 4, and inject concrete into the assembly slot 3 through the operating port 4 to connect the beam slab with the precast shear wall 1 and the upper and lower precast shear walls 1 into a whole.

[0049] Step 4: When splicing two horizontally adjacent precast shear wall 1 pieces, the side end faces of the two precast shear wall 1 pieces are attached. The second reinforcing steel bar 6 in the dovetail groove 2 of one precast shear wall 1 piece is inserted into the dovetail groove 2 of the other precast shear wall 1 piece. Concrete is injected into the pouring space formed by splicing the dovetail groove 2 of the two precast shear wall 1 pieces, so that the two horizontally adjacent precast shear wall 1 pieces are connected into a whole.

[0050] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the invention. Therefore, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A prefabricated shear wall, characterized in that: Includes precast shear wall (1); dovetail grooves (2) are provided on both sides of the precast shear wall (1). When two horizontally adjacent precast shear wall (1) are spliced, the dovetail grooves (2) on the sides of the precast shear wall (1) are spliced ​​to form a pouring space. Concrete is poured into the pouring space to connect the two horizontally adjacent precast shear wall (1) into a whole; an assembly groove (3) is formed at the bottom of the precast shear wall (1), and the front of the precast shear wall (1) An operating port (4) is formed that communicates with the assembly slot (3). When the precast shear wall (1) is set on the beam slab and the upper precast shear wall (1) is set on the lower precast shear wall (1), the vertical distribution bars on the beam slab or the lower precast shear wall (1) are inserted into the assembly slot (3). Concrete is injected into the assembly slot (3) through the operating port (4) so ​​that the precast shear wall (1) is connected with the beam slab and the upper and lower precast shear walls (1) into a whole.

2. The prefabricated shear wall according to claim 1, characterized in that: The assembly groove (3) is provided with several first reinforcing steel bars (5) at intervals, and the several first reinforcing steel bars (5) are tied to the vertical distribution bars.

3. The prefabricated shear wall according to claim 1, characterized in that: Several second reinforcing bars (6) are spaced apart in the dovetail groove (2) at one end of the precast shear wall (1). The axial direction of the second reinforcing bars (6) is arranged along the wall surface direction of the precast shear wall (1), and the second reinforcing bars (6) are inserted into the dovetail groove (2) at the other end of the adjacent precast shear wall (1).

4. The prefabricated shear wall according to claim 3, characterized in that: Several third reinforcing bars (7) are spaced apart in the dovetail groove (2) at one end of the precast shear wall (1). The axial direction of the third reinforcing bars (7) is arranged along the wall thickness direction of the precast shear wall (1), and the third reinforcing bars (7) are perpendicularly and intersectingly connected with the second reinforcing bars (6).

5. The prefabricated shear wall according to claim 1, characterized in that: The precast shear wall (1) has a hoisting groove (8) on both sides of its bottom. The hoisting groove (8) is located between the dovetail groove (2) and the assembly groove (3), and the hoisting groove (8) and the assembly groove (3) are connected by a through groove (9).

6. The prefabricated shear wall according to claim 5, characterized in that: The precast shear wall (1) has a detachable support leg (11) at the bottom. The top of the support leg (11) is integrally formed with an assembly block (12). The assembly block (12) is matched and inserted into the hoisting groove (8), and the top of the assembly block (12) has a disassembly groove (14). Several square grooves (13) are formed at intervals on both sides of the support leg (11).

7. The prefabricated shear wall according to claim 6, characterized in that: The bottom of the hoisting groove (8) is integrally formed with a limiting block (10), which is located below the through groove (9); the top of the assembly block (12) has a groove that matches the limiting block (10).

8. An installation method for the prefabricated shear wall as described in claim 7, characterized in that: Includes the following steps: Step 1: Pass the hoisting rope through the hoisting slot (8) at the bottom of the precast shear wall (1), fix the precast shear wall (1) by tying the hoisting rope, and transport the precast shear wall (1) to the assembly point; Step 2: After the precast shear wall (1) is lifted close to the assembly point, insert the assembly block (12) of the support (11) into the hoisting groove (8), so that the hoisting rope is inserted into the disassembly groove (14) of the assembly block (12), and hoist the precast shear wall (1) and its support (11) to the assembly point at the same time, so that the vertical distribution bars on the beam or the lower precast shear wall (1) are inserted into the assembly groove (3), and remove the hoisting rope; Step 3: Tie the first reinforcing bar (5) in the assembly slot (3) to the vertical distribution bar of the beam or the lower precast shear wall (1) through the operating port (4), and inject concrete into the assembly slot (3) through the operating port (4) to connect the beam and the precast shear wall (1) and the upper and lower precast shear walls (1) into a whole. Step 4: When splicing two horizontally adjacent precast shear wall panels (1), the side ends of the two precast shear wall panels (1) are attached together. The second reinforcing steel bar (6) in the dovetail groove (2) of one precast shear wall panel (1) is inserted into the dovetail groove (2) of the other precast shear wall panel (1). Concrete is injected into the pouring space formed by splicing the dovetail grooves (2) of the two precast shear wall panels (1) so that the two horizontally adjacent precast shear wall panels (1) are connected into a whole.

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