A precast shear wall for prefabricated buildings

Abstract

The present invention discloses a prefabricated shear wall for an assembled building, which comprises a wall body, a steel bar mesh and embedded parts. Two layers of steel bar meshes are arranged inside the wall body, and the embedded parts are buried inside the left side surface or the right side surface of the wall body and located in the middle of the two layers of steel bar meshes; the embedded parts comprise a straight groove and a branch groove, a plurality of branch grooves are arranged on the straight groove, the branch grooves on the straight groove have the same orientation, and the front end of the branch groove is flush with the side surface of the wall body; a driving rod and a connecting rod are further included, the driving rod is movably installed in the straight groove, the front end of the driving rod is provided with an inclined surface and the inclined surface faces the branch groove; the connecting rod is slidably arranged in the branch groove. When the shear wall of the present invention is installed, the interference of horizontal bar protruding does not need to be considered, and the shear wall with corresponding size can be set according to the distance between two beams, which speeds up the installation speed of the shear wall; the shear wall reduces the horizontal bar protruding, and the corresponding production die can be further simplified, reducing the production cost.

Description

Technical Field

[0001] The present invention belongs to the technical field of precast shear walls, and particularly relates to a precast shear wall for prefabricated buildings. Background Art

[0002] A shear wall is also called a wind-resistant wall, seismic wall or structural wall. It is a wall in a building or structure that mainly bears the horizontal load and vertical load caused by wind load or seismic action, and prevents the structure from shear failure. A partition wall is a wall that divides the internal space of a building. In prefabricated buildings, the partition wall and the shear wall are prefabricated in a factory and then transported to the site for installation, which has the advantages of fast construction speed, little restriction by climate conditions, labor saving and improved building quality. In the prior art, the shear walls are all reinforced on four sides, which is convenient for the connection between the shear walls and between the shear wall and the beam. It is very easy to carry out the up-and-down connection and installation in the vertical direction, but it is more difficult to install the reinforcement in the horizontal direction because the interference of the reinforcement needs to be considered, which slows down the installation speed of the shear wall. Therefore, there is an urgent need to design a shear wall that is convenient to install and has reliable connection. Summary of the Invention

[0003] In view of the above deficiencies of the prior art, the present invention provides a precast shear wall for prefabricated buildings.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A precast shear wall for prefabricated buildings includes a wall body, a steel mesh and embedded parts. There are 2 layers of steel meshes arranged in the wall body. The embedded parts are buried in the left or right side surface of the wall body and are located between the 2 layers of steel meshes. The embedded parts include a straight groove and branch grooves. A number of branch grooves are arranged on the straight groove. The branch grooves on the straight groove have the same orientation, and the front ends of the branch grooves are flush with the side surface of the wall body. It also includes a driving rod and a connecting rod. The driving rod is movably installed in the straight groove, and the front end of the driving rod is provided with an inclined surface facing the branch grooves. The connecting rod is slidably arranged in the branch grooves.

[0006] The innovation of the present invention is that embedded parts are arranged in the wall body. The driving rod installed in the embedded parts drives the connecting rod to protrude from the shear wall to replace the original reinforcement on the shear wall for connection with adjacent shear walls or beams, which simplifies the installation steps while ensuring the connection quality.

[0007] Further, the height of the driving rod is the same as the height of the straight groove to ensure that all the connecting rods can be pushed out.

[0008] Further, the cross-section of the straight groove is rectangular. The straight groove and the driving rod are used in cooperation. The rectangular driving rod can ensure that it will not roll during operation and ensure that the direction of the inclined surface at the front end of the driving rod remains unchanged.

[0009] Further, the fit clearance tolerance between the support groove and the connecting rod is -0.2 to -0.8 mm, and the preferred fit clearance tolerance is -0.5 mm, which ensures that the connecting rod can slide freely in the support groove without loosening.

[0010] Further, it also includes holes. Holes are provided on the side of the wall body where no embedded parts are set. The number and position of the holes correspond one-to-one with the number and position of the support grooves, which facilitates the installation between shear walls.

[0011] The advantages of the present invention are as follows: When installing the shear wall of the present invention, the interference of horizontal reinforcement bars does not need to be considered. The shear wall with corresponding dimensions can be set according to the distance between two beams, which speeds up the installation speed of the shear wall; the shear wall reduces the horizontal reinforcement bars, and its corresponding production mold can be further simplified, reducing the production cost. Description of the Drawings

[0012] Figure 1 is a schematic structural view of a precast shear wall of an assembled building according to the present invention;

[0013] Figure 2 is a top view of a precast shear wall of an assembled building according to the present invention. Specific Embodiments

[0014] The present invention will be described in detail below with reference to the accompanying drawings:

[0015] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, specific orientation structure and operation, so it cannot be understood as a limitation to the present invention.

[0016] Such as Figure 1-2As shown in the figure, a precast shear wall for an assembled building includes a wall body 1, a steel mesh 2, a buried part 3, a driving rod 4, a connecting rod 5, and a hole 6. There are 2 layers of steel mesh 2 arranged inside the wall body 1. The buried part 3 is embedded in the left side surface of the wall body 1 and is located in the middle of the 2 layers of steel mesh 2; the left end of the buried part 3 is flush with the left side surface of the wall body 1. The buried part 3 includes a straight groove 31 and a branch groove 32. The cross-section of the straight groove 31 is rectangular, and a number of branch grooves 32 are arranged on the straight groove 31. The branch grooves 32 face the same direction, that is, they are all designed towards the seat side. The number and position of the branch grooves 32 are determined according to the key connection points between the shear wall and the shear wall or between the shear wall and the beam, and can be arranged in a whole row or in a staggered manner. The driving rod 4 is movably installed in the straight groove 31. The height of the driving rod 4 is the same as the height of the straight groove 31, ensuring that the driving rod 4 will not protrude from the wall body 1 after installation. The front end of the driving rod 4 is provided with an inclined surface facing the branch groove 32, and the design of the inclined surface facilitates pushing out the connecting rod 5 when operating the driving rod 4. The connecting rod 5 is slidably arranged in the branch groove 32. The length of the connecting rod 5 is equal to the length of the branch groove 32 plus the width of the straight groove 31, that is, after the connecting rod 5 is placed, its left end is flush with the left end of the branch groove 32, and the right end is in contact with the right side surface of the straight groove 31. The fit clearance tolerance between the branch groove 32 and the connecting rod 5 is -0.5 mm, ensuring that the connecting rod 5 can slide freely without loosening.

[0017] Holes 6 are arranged on the right side surface of the wall body 1. The number and position of the holes 6 correspond one by one to the number and position of the branch grooves 32, facilitating the installation and connection between the shear walls. The front end of the connecting rod 5 adopts the structure of an explosive nail, ensuring that it is not easily pulled out after being inserted into the hole 6.

[0018] The working principle of this embodiment: Before installation, all the connecting rods 5 need to be placed in the buried parts 3 so that they do not protrude from the shear wall, and then the shear wall is hoisted to the corresponding installation position (when installing and connecting with the beam, holes corresponding to the connecting rods need to be reserved on the beam); after the shear wall is placed, the driving rod 4 is inserted into the straight groove 31. Under the action of the driving rod 4, the connecting rod 5 will be driven to move leftward and protrude from the shear wall, that is, the connecting rod 5 replaces the original function of the shear wall exposing the steel bars. After installation, concrete slurry is poured into the straight groove 31 to fill the gaps between the branch grooves 32 and the straight groove 31.

[0019] Although the specific implementation embodiments of the present invention have been described and explained in detail above, it should be pointed out that we can make various changes and modifications to the above implementation embodiments, but these do not depart from the spirit of the present invention and the scope defined by the appended claims.

Claims

1. A precast shear wall for prefabricated buildings, comprising a wall body (1), a steel mesh (2) and embedded parts (3). There are 2 layers of steel meshes (2) arranged in the wall body (1). The embedded parts (3) are buried in the left or right side surface of the wall body (1) and are located in the middle of the 2 layers of steel meshes (2). It is characterized in that The embedded parts (3) include a straight groove (31) and branch grooves (32). A number of branch grooves (32) are arranged on the straight groove (31). The branch grooves (32) on the straight groove (31) have the same orientation, and the front ends of the branch grooves (32) are flush with the side surface of the wall body (1). It also includes a driving rod (4) and a connecting rod (5). The driving rod (4) is movably installed in the straight groove (31), and the front end of the driving rod (4) is provided with an inclined surface facing the branch groove (32). The connecting rod (5) is slidably arranged in the branch groove (32). The front end of the connecting rod (5) adopts the structure of an explosive nail. It also includes holes (6). Holes (6) are arranged on the side surface of the wall body (1) where the embedded parts (3) are not provided. The number and positions of the holes (6) correspond one by one to the number and positions of the branch grooves (32).

2. The precast shear wall of a prefabricated building according to claim 1, characterized in that, The height of the driving rod (4) is the same as the height of the straight groove (31).

3. A precast shear wall for an assembled building according to claim 1, characterized in that, The cross-section of the straight groove (31) is rectangular.

4. A precast shear wall for an assembled building according to claim 1, wherein The fit clearance tolerance between the branch groove (32) and the connecting rod (5) is -0.2 to -0.8 mm.

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