A composite shear wall with on-site self-positioning of vertical connection steel bars

Abstract

A composite shear wall with on-site self-positioning of vertical connecting steel bars. Large-diameter vertical stress-bearing steel bars and small-diameter, unconnected vertical structural steel bars are arranged in the composite shear wall body and in the prefabricated edge component area connected to the vertical post-cast section. Vertical holes penetrating the composite shear wall are provided at positions corresponding to the large-diameter vertical stress-bearing steel bars. The large-diameter vertical stress-bearing steel bars of the lower composite shear wall are bent and extended into the bottom area of ​​the vertical holes of the upper composite shear wall. Alternatively, a straight threaded joint or a welded vertical connecting steel bar is provided on the top of the large-diameter vertical stress-bearing steel bars of the lower composite shear wall, and the vertical connecting steel bar is bent and extended into the bottom area of ​​the vertical holes of the upper composite shear wall. After post-cast concrete is poured into the vertical holes from the top, the large-diameter vertical stress-bearing steel bars of the upper and lower composite shear walls are overlapped. The present invention can avoid the on-site positioning problem of post-inserting additional vertical connecting steel bars into the vertical holes of the composite shear wall, greatly improving on-site construction efficiency and accuracy, and increasing the installation speed of the composite shear wall.

Description

Technical Field

[0001] The invention belongs to the field of building technology, relates to prefabricated walls, and in particular to a composite shear wall with vertically connected steel bars capable of on-site self-positioning. Background Art

[0002] At present, composite shear wall structures are gradually entering the stage of engineering application. Representative technical systems include double-sided composite shear walls, EVE prefabricated hollow wall panels, SPCS steel welded mesh composite shear walls and longitudinal rib composite shear walls. The vertical steel bars of composite shear walls are connected by indirect lap joints. Compared with fully prefabricated shear walls, the processing and installation precision requirements are lower, which can effectively reduce the cost of prefabricated wall connections. The connection quality is controllable. It is a type of prefabricated concrete structure system that conforms to China's current national conditions.

[0003] However, in existing composite shear wall structures, the vertical reinforcement of the edge components of the upper and lower composite shear walls and the vertical distribution reinforcement of the wall body are mostly connected using additional vertical connecting steel bars. The additional vertical connecting steel bars are arranged in the composite shear wall cavity or vertical hole, and after pouring concrete, the additional vertical connecting steel bars are overlapped and connected with the vertical reinforcement in the composite shear wall. During on-site construction, the additional vertical connecting steel bars are not directly fixed to the composite shear wall. Transverse steel bars are tied to the upper ends of the additional vertical connecting steel bars to connect multiple additional vertical connecting steel bars together to increase overall rigidity and ensure that the additional vertical connecting steel bars do not shift during the concrete pouring process. However, actual engineering experience shows that the impact of falling concrete and the impact of vibration during concrete pouring can easily disturb the additional vertical connecting steel bars, causing them to shift and deviate from the designed position. When installing the upper-level composite shear wall, the displaced additional vertical connecting steel bars will collide with the composite shear wall, interfering with the installation of the precast wall, greatly reducing the installation speed of the precast wall, and making it difficult to adjust the installation position of the precast wall when it deviates from the designed position. At the same time, the additional vertical connecting steel bars occupy the space in the vertical holes, causing great inconvenience during concrete pouring and vibration, and affecting the construction quality of the subsequent concrete pouring. When laying out the additional vertical connecting steel bars, workers on site are required to lay out the lines to determine their position, which increases the on-site construction links and line-laying work, affecting the on-site construction progress. Summary of the Invention

[0004] In order to overcome the shortcomings and quality risks of the above-mentioned existing vertical reinforcement connections of the upper and lower layers of composite shear walls, the purpose of the present invention is to provide a composite shear wall with on-site self-positioning of vertical connection reinforcements. Vertical stress-bearing reinforcements with large diameters and large spacings are set in the composite shear wall. The vertical stress-bearing reinforcements of the lower composite shear wall in the structure are bent directly or through additional connection reinforcements and extended into the vertical holes of the upper composite shear wall. After pouring concrete in the vertical holes, the vertical stress-bearing reinforcements of the upper and lower composite shear walls are overlapped and connected. In the present invention, the vertical connection reinforcements of the upper and lower composite shear walls are directly extended from the lower prefabricated wall for self-positioning. There is no on-site layout and positioning operation of additional vertical connection reinforcements in the existing composite shear walls. The vertical connection reinforcements are not easily disturbed and shifted during the pouring of concrete. At the same time, the vertical connection reinforcements will not interfere with the pouring and vibration of concrete in the vertical holes. The positioning accuracy of the vertical connection reinforcements is high, which can improve the installation efficiency and installation accuracy of the prefabricated wall.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A composite shear wall with on-site self-positioning of vertical connecting steel bars is characterized in that large-diameter vertical stress-bearing steel bars are arranged in the wall, and a vertical hole 5 is arranged to pass through from top to bottom near each large-diameter vertical stress-bearing steel bar. The large-diameter vertical stress-bearing steel bars of the lower composite shear wall 11 are bent and extended into the bottom area of ​​the vertical hole 5 of the upper composite shear wall 12, or a steel bar joint 6 is arranged on the top of the large-diameter vertical stress-bearing steel bars of the lower composite shear wall 11 to connect the vertical connecting steel bars bent and extended into the bottom area of ​​the vertical hole 5 of the upper composite shear wall 12. After pouring concrete in the vertical hole 5, the large-diameter vertical stress-bearing steel bars of the upper composite shear wall 12 and the lower composite shear wall 11 are overlapped and connected.

[0007] The bending angle does not exceed 1:4.

[0008] The diameter of the large-diameter vertical stress-bearing steel bars is between 14 and 18 mm.

[0009] Along the thickness direction of the wall, the large-diameter vertical stress-bearing steel bars are located inside or outside the wall outside the vertical hole 5 .

[0010] The large-diameter vertical stress-bearing steel bars include large-diameter vertical stress-bearing steel bars 21 in the wall area 2 and large-diameter vertical stress-bearing steel bars 31 in the edge component area 3. There are multiple large-diameter vertical stress-bearing steel bars 21 in the wall area, which are arranged in a plum blossom shape along the thickness direction of the wall. The spacing between adjacent large-diameter vertical stress-bearing steel bars 21 in the wall area is between 300 and 600 mm. There is only one large-diameter vertical stress-bearing steel bar 31 in the edge component, which is arranged at the corner or middle of the prefabricated edge component area 3.

[0011] Vertical structural steel bars are also provided in the wall, and the vertical structural steel bars of the upper composite shear wall 12 and the lower composite shear wall 11 are not connected.

[0012] The diameter of the vertical structural steel bars is between 6 and 12 mm.

[0013] The vertical structural steel bars include vertical structural steel bars 22 in the wall area 2 and vertical structural steel bars 32 in the edge component area 3. The vertical structural steel bars 22 in the wall area are arranged on a side symmetrical to the vertical hole 5 of the large-diameter vertical stress-bearing steel bars 21 in the wall area and between the large-diameter vertical stress-bearing steel bars 21 in the adjacent wall area to prevent the wall area 2 from cracking under the action of temperature stress and shrinkage. The distance between the vertical structural steel bars 22 in the adjacent wall area along the length direction of the wall is between 150 and 300 mm. The prefabricated edge component area 3 is equipped with edge component stirrups 33 to ensure the stirrup constraint effect when the concrete in this area is under pressure. The vertical structural steel bars 32 in the edge component are arranged at the corners of the edge component stirrups 33 to form a steel skeleton.

[0014] The vertical connecting steel bars include wall area vertical connecting steel bars 24 for connecting to the large-diameter vertical stress-bearing steel bars 21 in the wall area and edge member vertical connecting steel bars 34 for connecting to the large-diameter vertical stress-bearing steel bars 31 in the edge member.

[0015] The cross section of the vertical hole 5 is circular or elliptical, with a dimension along the wall thickness direction being not less than 80 mm and a dimension along the wall width direction being between 80 and 150 mm.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The vertical connecting steel bars of the upper and lower composite shear walls are directly extended from the lower composite shear wall for self-positioning. There is no need to carry out line-laying and positioning operations on site, and no additional positioning measures are required, thus saving labor.

[0018] (2) The vertical connecting steel bars are directly fixed on the lower layer composite shear wall. During the pouring of the post-concrete, the vertical connecting steel bars are not easily disturbed and shifted. The completion accuracy is high and it will not interfere with the installation of the upper layer composite shear wall. The installation efficiency and installation accuracy of the composite shear wall are significantly improved.

[0019] (3) When pouring post-cast concrete in the vertical hole, the vertical connecting steel bars are located outside the vertical hole and will not interfere with the pouring and vibration of the concrete in the vertical hole, so the post-cast concrete construction efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the on-site self-positioning composite shear wall with vertically connected steel bars according to the present invention.

[0021] Figure 2 for Figure 1 Schematic cross-section of a composite shear wall.

[0022] Figure 3 for Figure 1 3D schematic diagram of the connection between upper and lower composite shear walls when composite shear walls are applied to the overall structure.

[0023] Figure 4 for Figure 3 Schematic diagram of the connection between the upper and lower composite shear wall areas.

[0024] Figure 5 It is a schematic diagram of the connection structure of the wall area of ​​the existing composite shear wall, which is a comparative example of the present invention.

[0025] Figure 6 for Figure 4 Schematic diagram of the improved connection structure of the wall area of ​​the upper, middle and lower layers of composite shear walls.

[0026] Figure 7 、 Figure 8 for Figure 1 Schematic diagram of the improved version 1 of the composite shear wall, in which the vertical holes have an elliptical cross-section.

[0027] Figure 9 、 Figure 10 for Figure 1 Schematic diagram of improved version 2 of the composite shear wall.

[0028] Figure 11 、 Figure 12 for Figure 1 Schematic diagram of improved version 3 of composite shear wall.

[0029] In the figure: 1-composite shear wall; 11-lower-story composite shear wall; 12-upper-story composite shear wall; 2-wall area; 21-large-diameter vertical load-bearing steel bars in the wall area; 22-vertical structural steel bars in the wall area; 23-horizontal connecting steel bars; 24-vertical connecting steel bars in the wall area; 25-additional connecting steel bars; 3-precast edge member area; 31-large-diameter vertical load-bearing steel bars in the edge member; 32-vertical structural steel bars in the edge member; 33-edge member stirrups; 34-vertical connecting steel bars in the edge member; 4-vertical post-cast edge member area; 5-vertical hole; 6-steel bar joint; 7-bottom horizontal groove; 8-floor slab. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below with reference to the accompanying drawings and examples.

[0031] like Figures 1 to 12As shown, the present invention is a composite shear wall with on-site self-positioning of vertical connecting steel bars. Large-diameter vertical stress-bearing steel bars with a diameter between 14 and 18 mm are arranged in the wall, and a vertical hole 5 is provided near each large-diameter vertical stress-bearing steel bar, which is generally along the thickness direction of the wall. The large-diameter vertical stress-bearing steel bar is located inside or outside the wall outside the vertical hole 5. The large-diameter vertical stress-bearing steel bars of the lower-layer composite shear wall 11 are bent (the bending angle generally does not exceed 1:4) and extend into the bottom area of ​​the vertical hole 5 of the upper-layer composite shear wall 12 (when there is no height restriction during the transportation of the composite shear wall 1), or a steel bar joint 6 is provided on the top of the large-diameter vertical stress-bearing steel bars of the lower-layer composite shear wall 11 to connect the vertical connecting steel bars bent and extending into the bottom area of ​​the vertical hole 5 of the upper-layer composite shear wall 12 (when the height of the composite shear wall 1 is restricted during transportation), and after pouring concrete in the vertical hole 5, the large-diameter vertical stress-bearing steel bars of the upper-layer composite shear wall 12 and the lower-layer composite shear wall 11 are overlapped and connected. This avoids the problem of on-site positioning of the additional vertical connecting steel bars inserted into the vertical hole 5, greatly improves on-site construction efficiency and accuracy, and increases the installation speed of the composite shear wall.

[0032] Specifically, a complete composite shear wall 1 includes a wall region 2 and a precast edge member region 3 connected to a vertical post-cast edge member 4. The precast edge member region 3 and the connected vertical post-cast edge member 4 together constitute the edge member region of the shear wall. Therefore, in the present invention, the large-diameter vertical stress-bearing steel bars include the large-diameter vertical stress-bearing steel bars 21 in the wall region 2 and the large-diameter vertical stress-bearing steel bars 31 in the edge member region 3.

[0033] Among them, there are generally multiple large-diameter vertical stress-bearing steel bars 21 in the wall area to ensure the stress of the wall area 2, which are arranged in a plum blossom shape along the thickness direction of the wall (that is, the large-diameter vertical stress-bearing steel bars 21 in adjacent wall areas should be located on the inner and outer sides of the wall respectively). The spacing between the large-diameter vertical stress-bearing steel bars 21 in adjacent wall areas is generally between 300 and 600 mm. There is generally only one large-diameter vertical stress-bearing steel bar 31 in the edge component, which is arranged at the corner or middle of the prefabricated edge component area 3.

[0034] The present invention can also set vertical structural steel bars with a diameter of between 6 and 12 mm in the wall, and the vertical structural steel bars of the upper layer composite shear wall 12 and the lower layer composite shear wall 11 are not connected, and their contribution to the structural stress is not considered. Specifically, the vertical structural steel bars include the wall area vertical structural steel bars 22 located in the wall area 2 and the edge component vertical structural steel bars 32 located in the prefabricated edge component area 3. The wall area vertical structural steel bars 22 are set on the side of the wall area large diameter vertical stress-bearing steel bars 21 that is symmetrical about the vertical hole 5 and between the adjacent wall area large diameter vertical stress-bearing steel bars 21 to prevent the wall area 2 from cracking under the action of temperature stress and shrinkage. The diameter of the wall area vertical structural steel bars 22 is between 6 and 10 mm, and the distance between the adjacent wall area vertical structural steel bars 22 along the length direction of the wall is between 150 and 300 mm. The prefabricated edge member area 3 is provided with edge member stirrups 33 to ensure the stirrup restraint effect when the concrete in this area is under compression. The edge member vertical structural steel bars 32 are arranged at the corners of the edge member stirrups 33 to form a steel skeleton.

[0035] In the present invention, the vertical connecting steel bars include vertical connecting steel bars 24 in the wall area for connecting to the large-diameter vertical stress-bearing steel bars 21 in the wall area and vertical connecting steel bars 34 in the edge components for connecting to the large-diameter vertical stress-bearing steel bars 31 in the edge components. The use of vertical connecting steel bars directly connected to the large-diameter vertical stress-bearing steel bars for positioning can avoid the need for on-site positioning measures and low positioning accuracy for the additional connecting steel bars 25 in the vertical holes 5 in traditional composite shear walls. This can greatly improve the on-site positioning accuracy of the vertical connecting steel bars 24 in the wall area and the vertical connecting steel bars 34 of the edge components, thereby improving the installation efficiency of the composite shear wall 1.

[0036] At the same time, the vertical connecting steel bars 24 in the wall area and the vertical connecting steel bars 34 of the edge components directly extend from the lower composite shear wall 11 or are connected to the lower composite shear wall 11 through steel bar joints. No positioning operation is required during on-site construction, which can avoid the problem of additional vertical connecting steel bars 25 placed in the cavity or vertical hole of the existing composite shear wall shifting during the concrete pouring process, and can improve the installation efficiency and installation accuracy of the upper composite shear wall 12.

[0037] Specifically, the vertical structural steel bars 22 in the wall area and the vertical structural steel bars 32 in the edge components of the upper and lower composite shear walls are not connected, and their contribution to the structural stress is not considered; the large-diameter vertical stress-bearing steel bars 21 in the wall area and the large-diameter vertical stress-bearing steel bars 31 in the edge components of the upper and lower composite shear walls are overlapped and connected, and their contribution to the structural stress is considered, and their reinforcement area is determined by structural calculations or the minimum structural reinforcement area.

[0038] In the present invention, the cross section of the vertical hole 5 is circular or elliptical, the dimension along the wall thickness direction is not less than 80 mm, and the dimension along the wall width direction is between 80 and 150 mm.

[0039] Figures 1 to 4 The present invention provides a composite shear wall with vertical connection steel bars and a schematic diagram of the connection structure. Figure 1 、 Figure 2 As shown, large-diameter vertical stress-bearing steel bars 21 are arranged in the wall area 2 to ensure the stress of the wall area. The large-diameter vertical stress-bearing steel bars 21 in the wall area are arranged in a plum blossom shape along the thickness direction of the wall. The spacing between adjacent large-diameter vertical stress-bearing steel bars 21 in the wall area is between 300 and 600 mm, and the diameter is between 14 and 18 mm. Vertical structural steel bars 22 in the wall area are arranged on the other side corresponding to the large-diameter vertical stress-bearing steel bars 21 in the wall area and between the adjacent large-diameter vertical stress-bearing steel bars 21 in the wall area to prevent the wall area 2 from cracking under the action of temperature stress and shrinkage. The diameter of the vertical structural steel bars 22 in the wall area is between 6 and 10 mm, and the distance between adjacent vertical structural steel bars 22 in the wall area along the length direction of the wall is between 150 and 300 mm.

[0040] The prefabricated edge member area 3 is connected to the vertical post-cast edge member 4 through the horizontal connecting steel bars 23 extending from the superimposed shear wall 1. A large-diameter vertical stress-bearing steel bar 31 for the edge member is arranged in the prefabricated edge member area 3 to ensure the stress of the prefabricated edge member area 3. The diameter of the large-diameter vertical stress-bearing steel bar 31 for the edge member is between 14 and 18 mm and is arranged at the corner or middle of the prefabricated edge member area 3. The prefabricated edge member area 3 is configured with edge member stirrups 33 to ensure the stirrup constraint effect when the concrete in this area is under pressure. The large-diameter vertical stress-bearing steel bar 31 for the edge member is arranged in the middle of the outer side of the edge member stirrup 33. The four corners of the edge member stirrup 33 are configured with edge member vertical structural steel bars 32 to form a steel skeleton. The diameter of the edge member vertical structural steel bars 32 is between 6 and 12 mm.

[0041] Vertical holes 5 are provided at locations corresponding to the large-diameter vertical stress-bearing reinforcement bars 21 in the wall region and the large-diameter vertical stress-bearing reinforcement bars 31 in the edge members. These holes 5 extend vertically through the composite shear wall 1, have a circular cross-section, and a diameter of no less than 80 mm. Specifically, the portions of the large-diameter vertical stress-bearing reinforcement bars 21 in the wall region, the vertical structural reinforcement bars 22 in the wall region, the large-diameter vertical stress-bearing reinforcement bars 31 in the edge members, and the vertical structural reinforcement bars 32 in the edge members of the composite shear wall 1 located within the composite shear wall 1 are all outside the range of the vertical holes 5.

[0042] When the composite shear wall 1 is subject to road height restrictions during transportation, Figure 1 As shown, during prefabrication, a steel bar joint 6 is set on the top of the large diameter vertical stress reinforcement 21 in the wall area and the large diameter vertical stress reinforcement 31 in the edge member. The steel bar joint 6 adopts a straight thread sleeve joint and does not extend out of the top surface of the composite shear wall 1. Figure 3 、 Figure 4As shown, after the lower-layer composite shear wall 11 is installed on-site, vertical connecting steel bars 24 for the wall area and vertical connecting steel bars 34 for the edge members of the same specifications are screwed into the steel bar joints 6. The vertical connecting steel bars 24 for the wall area and vertical connecting steel bars 34 for the edge members are bent along the wall thickness within the height range of the floor slab 8 and the horizontal groove 7 at the bottom of the upper-layer composite shear wall 12, and then extend into the bottom area of ​​the vertical hole 5 of the upper-layer composite shear wall 12. After concrete is poured into the vertical hole 5, the vertical connecting steel bars 24 for the wall area and vertical connecting steel bars 34 for the edge members are overlapped and connected with the corresponding large-diameter vertical stress-bearing steel bars 21 for the wall area and large-diameter vertical stress-bearing steel bars 31 for the edge members in the upper-layer composite shear wall 12.

[0043] In particular, the bending angle of the vertical connecting steel bars 24 in the wall area and the vertical connecting steel bars 34 in the edge components should not exceed 1:4, and the net distance from the side wall of the vertical hole 5 of the upper composite shear wall 12 should not be less than 15 mm.

[0044] Figure 5 This is a schematic diagram of the connection structure of the wall area of ​​the current composite shear wall, which is a comparative example of the present invention. Additional connecting steel bars 25 are arranged in the vertical holes 5 and overlapped with the vertical structural steel bars 22 in the wall area of ​​the lower composite shear wall 11 and the upper composite shear wall 12. During on-site construction, the additional connecting steel bars 25 need to be laid out and positioned, and additional positioning measures need to be added on the upper part to ensure the stability of the additional connecting steel bars 25 during construction. The additional connecting steel bars 25 are located in the vertical holes 5, which affects the pouring and vibration of the concrete in the vertical holes 5. During the pouring of the post-concrete, the additional connecting steel bars 25 are easily disturbed and shifted. After the construction is completed, the accuracy is poor. During the installation of the upper composite shear wall 12, it is easy to collide with the additional connecting steel bars 25. The installation speed of the upper composite shear wall 12 is slow and the installation accuracy is difficult to adjust. Compared with the comparative example, Figures 1 to 4 As shown in the present invention, the vertical connecting steel bars 24 in the wall area and the vertical connecting steel bars 34 of the edge members are directly extended from the lower composite shear wall 11 for self-positioning. There is no need to perform line-laying and positioning operations on site, and no need to adopt additional positioning measures. They are not easily shifted due to construction disturbances, and the completion accuracy is high. They will not interfere with the installation of the upper composite shear wall 12, and the installation efficiency and installation accuracy of the composite shear wall can be significantly improved.

[0045] Figure 6 Shown Figure 4 The improved schematic diagram of the present invention is shown. Figures 1 to 4 The steel bar joint 6 located inside the lower layer composite shear wall 11 is moved up to the floor slab 8 to avoid being blocked by concrete during the production process when the steel bar joint 6 is located inside the composite shear wall 11. At this time, the steel bar joint 6 adopts a straight thread sleeve joint or welding connection.

[0046] Figure 7 、 Figure 8 Shown Figure 1In the first improved version, the cross-section of the vertical hole 5 is improved from a circle to an ellipse, the minor axis of the ellipse (along the wall thickness direction) is not less than 80 mm, and the major axis (along the wall width direction) is between 80 and 150 mm, which can increase the pouring space of the post-cast concrete in the vertical hole 5 and improve the pouring quality of the post-cast concrete.

[0047] Figure 9 、 Figure 10 Shown Figure 1 The second improved version is that the large-diameter vertical force-bearing steel bars 31 of the edge member are arranged at the inner corners of the edge member stirrups 33, and at the same time serve as the standing steel bars of the steel skeleton. At this time, three edge member vertical structural steel bars 32 are set within the prefabricated edge member area 3.

[0048] Figure 11 、 Figure 12 Shown Figure 1 In the third improved version, the cross section of the vertical hole 5 is improved from a circle to an ellipse, and the large-diameter vertical stress-bearing steel bars 31 of the edge member are arranged at the inner corners of the stirrups 33 of the edge member.

[0049] In summary, the vertical connecting steel bars of the upper and lower layers of the composite shear walls of the present invention are directly extended from the lower prefabricated wall for self-positioning. There is no need for on-site layout and positioning operations of additional vertical connecting steel bars of the existing composite shear walls. The vertical connecting steel bars are not easily disturbed and displaced during the pouring of concrete. At the same time, the vertical connecting steel bars will not interfere with the pouring and vibration of concrete in the vertical holes. The positioning accuracy of the vertical connecting steel bars is high, which can improve the installation efficiency and installation accuracy of the prefabricated walls.

[0050] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes and substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A composite shear wall with vertical connecting steel bars and on-site self-positioning, characterized in that: Large-diameter vertical stress-bearing steel bars are arranged in the wall, and a vertical hole (5) is arranged near each large-diameter vertical stress-bearing steel bar, which is passed through from top to bottom. The large-diameter vertical stress-bearing steel bars of the lower-layer composite shear wall (11) are bent and extended into the bottom area of ​​the vertical hole (5) of the upper-layer composite shear wall (12), or a steel bar joint (6) is arranged on the top of the large-diameter vertical stress-bearing steel bars of the lower-layer composite shear wall (11) to connect the vertical connection steel bars bent and extended into the bottom area of ​​the vertical hole (5) of the upper-layer composite shear wall (12). After pouring concrete in the vertical hole (5), the large-diameter vertical stress-bearing steel bars of the upper-layer composite shear wall (12) and the lower-layer composite shear wall (11) are overlapped and connected. The large-diameter vertical stress-bearing steel bars include large-diameter vertical stress-bearing steel bars (21) in the wall area (2) and large-diameter vertical stress-bearing steel bars (31) in the edge component area (3). There are a plurality of large-diameter vertical stress-bearing steel bars (21) in the wall area, which are arranged in a plum blossom shape along the thickness direction of the wall. The spacing between adjacent large-diameter vertical stress-bearing steel bars (21) in the wall area is between 300 and 600 mm. There is only one large-diameter vertical stress-bearing steel bar (31) in the edge component, which is arranged at a corner or the middle of the prefabricated edge component area (3).

2. The composite shear wall with vertical connection steel bars and on-site self-positioning according to claim 1 is characterized in that: The bending angle does not exceed 1:

4.

3. The composite shear wall with vertically connected steel bars and on-site self-positioning according to claim 1 or 2, characterized in that: The diameter of the large-diameter vertical stress-bearing steel bars is between 14 and 18 mm.

4. The composite shear wall with vertical connection steel bars and on-site self-positioning according to claim 1 is characterized in that: Along the thickness direction of the wall, the large-diameter vertical stress-bearing steel bars are located inside or outside the wall outside the vertical hole (5).

5. The composite shear wall with vertical connection steel bars and on-site self-positioning according to claim 1 is characterized in that: Vertical structural steel bars are also arranged in the wall, and the vertical structural steel bars of the upper layer composite shear wall (12) and the lower layer composite shear wall (11) are not connected.

6. The composite shear wall with vertically connected steel bars and on-site self-positioning according to claim 5, characterized in that: The diameter of the vertical structural steel bars is between 6 and 12 mm.

7. The composite shear wall with vertically connected steel bars and on-site self-positioning according to claim 5 or 6, characterized in that: The vertical structural steel bars include wall area vertical structural steel bars (22) located in the wall area (2) and edge component vertical structural steel bars (32) located in the prefabricated edge component area (3). The wall area vertical structural steel bars (22) are arranged on a side symmetrical to the vertical hole (5) of the wall area large-diameter vertical stress-bearing steel bars (21) and between adjacent wall area large-diameter vertical stress-bearing steel bars (21) to prevent the wall area (2) from cracking under the action of temperature stress and shrinkage. The distance between adjacent wall area vertical structural steel bars (22) along the length direction of the wall is between 150 and 300 mm. The prefabricated edge component area (3) is equipped with edge component stirrups (33) to ensure the stirrup restraint effect when the concrete in this area is under pressure. The edge component vertical structural steel bars (32) are arranged at the corners of the edge component stirrups (33) to form a steel skeleton.

8. The composite shear wall with vertically connected steel bars and on-site self-positioning according to claim 1 is characterized in that: The vertical connecting steel bars include wall area vertical connecting steel bars (24) for connecting to the large-diameter vertical stress-bearing steel bars (21) in the wall area and edge member vertical connecting steel bars (34) for connecting to the large-diameter vertical stress-bearing steel bars (31) in the edge member.

9. The composite shear wall with vertically connected steel bars and on-site self-positioning according to claim 1, characterized in that: The cross section of the vertical hole (5) is circular or elliptical, and its dimension along the wall thickness direction is not less than 80 mm, and its dimension along the wall width direction is between 80 and 150 mm.

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