Prefabricated shear wall

Abstract

The utility model discloses a prefabricated shear wall, which relates to the field of prefabricated wallboards, and adopts the technical scheme that the prefabricated shear wall comprises a first wall body and a second wall body, a vertical groove is formed in the side wall of the first wall body, a plurality of raised lines are arranged on the second wall body, a grouting hole is formed in the second wall body, a first through hole is formed in the first wall body, and a second through hole is formed in the second wall body; and the same fixing piece penetrates through the first through hole and the second through hole. Due to the arrangement of the protruding strips and the vertical grooves, the first wall body and the second wall body can be rapidly aligned and spliced, due to the arrangement of the fixing pieces, pre-fixing of the first wall body and the second wall body can be well completed, mortar is poured into the grouting holes so that gaps can be filled with the mortar, and when the shear wall is subjected to vertical loads, the first wall body and the second wall body can be well fixed. The first wall body and the second wall body can be well linked, the possibility that stress is concentrated on the fixing piece is reduced, the overall performance of the shear wall is improved, and the anti-overflow piece made of silicon rubber can well adapt to the working environment of the shear wall.

Description

Technical Field

[0001] This utility model relates to the field of precast wall panels, and more specifically, to precast shear walls. Background Technology

[0002] Shear walls, also known as seismic walls, are walls in high-rise buildings used to resist horizontal and vertical loads generated by earthquakes, thereby improving the overall stability and seismic resistance of the building. They are a relatively important structural element in high-rise buildings.

[0003] Chinese patent CN219471287U discloses a precast shear wall, the key technical features of which are: it includes a first wall and a second wall assembled together; the first wall has a first stepped groove at each corner; the second wall has a second stepped groove at each corner; and fasteners are installed between multiple sets of the first and second stepped grooves; multiple first connecting steel bars are cast on both sides of the first wall; and multiple second connecting steel bars are cast on both sides of the second wall.

[0004] The above solution solves the problems of large weight and difficult hoisting and assembly of existing precast shear walls. However, the first and second walls are only connected to each other by fasteners, which makes it easy for stress to concentrate on the fasteners when the precast shear wall is subjected to vertical loads, leading to the possibility of the fasteners breaking.

[0005] Therefore, a new solution is needed to address this problem. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a precast shear wall.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a precast shear wall, comprising an assembled first wall and a second wall, wherein the first wall has a plurality of vertical grooves on its sidewall facing the second wall, and the second wall has a plurality of protrusions respectively embedded in each vertical groove, wherein a gap is formed between the protrusions and the inner wall of the vertical groove, and the second wall has grouting holes for injecting grout into the gaps, wherein the first wall has a plurality of first through holes communicating with the vertical grooves, and the second wall has a plurality of second through holes, wherein the first through holes and the second through holes are both passed through by the same fastener.

[0008] The present invention is further configured such that: a round tube with one end inserted into the first through hole is fixed on the inner wall of the second through hole, and the outer diameter of the round tube is smaller than the inner diameter of the first through hole.

[0009] The present invention is further configured such that: a grouting channel is provided on the second wall to connect all the vertical grooves, and a grouting hole is provided on the side wall of the second wall facing away from the first wall to connect the grouting channel.

[0010] The present invention is further configured such that: the fastener includes a fastening bolt passing through the round tube and a nut for cooperating with the fastening bolt, and an anti-overflow plate for covering the first through hole is fixedly connected to the nut.

[0011] The present invention is further configured such that: a plurality of gripping blocks are provided on the side of the fastening bolt that abuts against the second wall to prevent the fastening bolt from rotating on its own.

[0012] The present invention is further configured such that: a steel mesh is cast inside the second wall, and the round pipe is welded to the steel mesh.

[0013] The present invention is further configured such that: the cross-section of the protrusion is trapezoidal, and the area of ​​the end of the protrusion away from the second wall is smaller than the area of ​​its connection with the second wall.

[0014] The present invention is further configured such that the anti-overflow sheet is made of rubber material.

[0015] In summary, this utility model has the following beneficial effects: By dividing the shear wall into a first wall and a second wall, the first and second walls can be hoisted separately during installation, effectively reducing the hoisting load and improving the safety of the hoisting operation. During shear wall installation, the protruding strips are first embedded in the vertical grooves. The corresponding arrangement of the protruding strips and vertical grooves provides guidance for the splicing of the first and second walls, increasing the assembly speed. Then, the fasteners are installed in the first and second through holes. The fasteners pre-fix the first and second walls. Grouting is then performed into the grouting holes to fill the gaps. After the grout has completely solidified, the integrity of the first and second walls increases. When the shear wall is subjected to vertical loads, the solidified grout in the gaps and the fasteners effectively ensure the linkage between the first and second walls, allowing stress to be better distributed throughout the first and second walls, reducing the possibility of fastener breakage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 for Figure 2 Enlarged diagram of section A in the middle;

[0019] Figure 4 This is a schematic diagram of the structure of the first wall in this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the second wall in this utility model.

[0021] In the diagram: 1. First wall; 2. Second wall; 3. Vertical groove; 4. Raised strip; 5. Grouting hole; 6. First through hole; 7. Second through hole; 8. Circular pipe; 9. Flow channel; 10. Fastening bolt; 11. Nut; 12. Anti-overflow plate; 13. Grab block. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] Precast shear walls, such as Figure 1 and Figure 2 As shown, the shear wall includes a first wall 1 and a second wall 2 assembled together. The first wall 1 has several vertical grooves 3 on its sidewall facing the second wall 2. The second wall 2 has several protrusions 4 embedded in each of the vertical grooves 3, forming gaps between the protrusions 4 and the inner walls of the vertical grooves 3. The second wall 2 has grouting holes 5 for injecting grout into the gaps. The first wall 1 has several first through holes 6 connecting to the vertical grooves 3, and the second wall 2 has several second through holes 7. The first through holes 6 and second through holes 7 are both passed through by the same fastener. This shear wall is divided into the first wall 1 and the second wall 2, allowing for separate hoisting of the first wall 1 and the second wall 2 during installation. This effectively reduces the hoisting load and improves the safety of the hoisting operation. When installing the shear wall, first... 4. Embedded in the vertical groove 3, the corresponding setting of the protrusion 4 and the vertical groove 3 can play a certain guiding role in the splicing of the first wall 1 and the second wall 2, which can improve the assembly speed of the first wall 1 and the second wall 2. Then, the fastener is installed in the first through hole 6 and the second through hole 7. The setting of the fastener can pre-fix the first wall 1 and the second wall 2. Then, grouting is performed into the grouting hole 5 to fill the gap with mortar. After the mortar is completely solidified, the integrity of the first wall 1 and the second wall 2 is increased. When the shear wall is subjected to vertical load, the solidified mortar in the gap and the fastener can effectively ensure the linkage between the first wall 1 and the second wall 2, so that the stress can be better distributed in all parts of the first wall 1 and the second wall 2, reducing the possibility of fastener breakage.

[0024] like Figures 3 to 5As shown, a circular tube 8 is fixed to the inner wall of the second through hole 7, with one end inserted into the first through hole 6. The outer diameter of the circular tube 8 is smaller than the inner diameter of the first through hole 6. During the splicing of the first wall 1 and the second wall 2, the circular tube 8 needs to be aligned with the first through hole 6 before insertion. Setting the inner diameter of the first through hole 6 to be larger than the outer diameter of the circular tube 8 can reduce the time required to align the circular tube 8 with the first through hole 6, thus speeding up the splicing speed of the first wall 1 and the second wall 2. In addition, this setting also allows the mortar to better fill the outer wall of the circular tube 8 and the inner wall of the first through hole 6, further improving the connection strength between the first wall 1 and the second wall 2. The second wall 2 has an irrigation channel 9 that connects all the vertical grooves 3. The side wall of the second wall 2 facing away from the first wall 1 has a connecting irrigation channel 9. The grouting hole 5 allows mortar to flow into each vertical groove 3 along the grouting channel 9 during the grouting process. This reduces the connection time between the grouting machine and the grouting hole 5, as only the grouting machine needs to be connected to a single grouting hole 5. The fasteners include a fastening bolt 10 passing through the round pipe 8 and a nut 11 that mates with the fastening bolt 10. An anti-overflow plate 12 is attached to the nut 11 to cover the first through hole 6. When pre-fixing the first wall 1 and the second wall 2, the nut 11 is first screwed into the fastening bolt 10 but not tightened. When mortar overflows from the first through hole 6, it indicates that the mortar has filled the hole. Then, the nut 11 is tightened so that it presses the anti-overflow plate 12 against the side wall of the first wall 1. The mortar is not easily overflowing from the first through hole 6. Several gripping blocks 13 are provided on the side of the fastening bolt 10 that contacts the second wall 2 to prevent the fastening bolt 10 from rotating on its own. The gripping blocks 13 have a triangular cross-section. During the tightening of the nut 11, the fastening bolt 10 will press against the side wall of the second wall 2, causing the gripping blocks 13 to embed into the side wall of the second wall 2. During the subsequent shear wall's resistance to seismic waves, vibrations are less likely to cause the fastening bolt 10 to rotate on its own, thus significantly improving the connection strength between the first wall 1 and the second wall 2. A reinforcing mesh is cast inside the second wall 2. The round pipe 8 is welded to the reinforcing mesh. Specifically, after the round pipe 8 is welded to the reinforcing mesh, the reinforcing mesh is placed in a casting mold for casting to form the second wall 2. The wall 2 is designed to effectively improve the connection strength between the round pipe 8 and the second wall 2. The cross-section of the protruding strip 4 is trapezoidal, and the area of ​​the end of the protruding strip 4 away from the second wall 2 is smaller than the area of ​​its connection with the second wall 2. During the splicing process of the first wall 1 and the second wall 2, the protruding strip 4 needs to be aligned with the vertical groove 3. The above-mentioned design allows the side wall of the protruding strip 4 to abut against the inner wall of the vertical groove 3 and play a certain guiding role during the process of embedding the protruding strip 4 into the vertical groove 3. The anti-overflow plate 12 is made of rubber material, specifically silicone rubber. Silicone rubber has good chemical corrosion resistance, which allows the anti-overflow plate 12 to not only ensure good coverage of the first through hole 6, but also to adapt well to the working environment of the shear wall.

[0025] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A precast shear wall, comprising a first wall (1) and a second wall (2) assembled together, characterized in that: The first wall (1) has several vertical grooves (3) on its side wall facing the second wall (2). The second wall (2) has several protrusions (4) that are embedded in each of the vertical grooves (3). A gap is formed between the protrusions (4) and the inner wall of the vertical groove (3). The second wall (2) has grouting holes (5) for injecting grout into the gap. The first wall (1) has several first through holes (6) that connect the vertical grooves (3). The second wall (2) has several second through holes (7). The first through holes (6) and the second through holes (7) are both passed through by the same fastener.

2. The precast shear wall according to claim 1, characterized in that: A round tube (8) with one end inserted into the first through hole (6) is fixed on the inner wall of the second through hole (7). The outer diameter of the round tube (8) is smaller than the inner diameter of the first through hole (6).

3. The precast shear wall according to claim 2, characterized in that: The number of grouting holes (5) is one, and the second wall (2) is provided with a grouting channel (9) that connects all the vertical grooves (3) to each other. The grouting channel (9) is connected to the grouting hole (5).

4. The precast shear wall according to claim 3, characterized in that: The fastener includes a fastening bolt (10) passing through the round tube (8) and a nut (11) for engaging the fastening bolt (10), on which an anti-overflow plate (12) for covering the first through hole (6) is fixedly connected.

5. The precast shear wall according to claim 4, characterized in that: The fastening bolt (10) is provided with several gripping blocks (13) on the side that abuts against the second wall (2) to prevent the fastening bolt (10) from rotating on its own.

6. The precast shear wall according to claim 5, characterized in that: The interior of the second wall (2) is filled with a steel mesh, and the round pipe (8) is welded to the steel mesh.

7. The precast shear wall according to claim 6, characterized in that: The cross-section of the protrusion (4) is trapezoidal, and the area of ​​the end of the protrusion (4) away from the second wall (2) is smaller than the area of ​​its connection with the second wall (2).

8. The precast shear wall according to claim 7, characterized in that: The anti-overflow sheet (12) is made of rubber material.

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