A concrete shear wall structure

Abstract

The utility model discloses a kind of concrete shear wall structures, it is related to building construction technology field, mainly including non-corner concrete precast slab and corner concrete precast slab, the first side of non-corner concrete precast slab is first mortise groove, and the second side opposite with the first side of non-corner concrete precast slab is first tenon, the first side of corner concrete precast slab is second mortise groove, and the second side opposite with the first side of corner concrete precast slab forms right-angle corner and has second tenon, the second mortise groove is used for with the butt joint of first tenon, the second tenon is used for with the butt joint of first mortise groove, and the butt joint of mortise groove and tenon adopts bolt connection.The utility model makes the kind demand of prefabricated component less, saves construction cost.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a concrete shear wall structure. Background Technology

[0002] Currently, prefabricated concrete building components are mainly divided into three categories: precast beams, slabs, and columns. To meet the diverse needs of customers for prefabricated building types, the types of precast components have become extremely complex. For example, patent CN105178433B discloses a precast concrete shear wall structure and its construction method, increasing the number of component types from the initial 16 to over 40. This rapid expansion in the demand for precast component production equipment has led to the need to produce multiple types of precast components according to different requirements, which increases construction costs to some extent. Therefore, a concrete shear wall structure is urgently needed to solve the aforementioned technical problems. Utility Model Content

[0003] The purpose of this invention is to provide a concrete shear wall structure to solve the problems existing in the prior art, thereby reducing the need for different types of prefabricated components and saving construction costs.

[0004] To achieve the above objectives, this utility model provides the following solution: This utility model provides a concrete shear wall structure, including a precast concrete slab at a non-corner location and a precast concrete slab at a corner location. The first side of the precast concrete slab at the non-corner location is a first mortise and tenon, and the second side opposite to the first side of the precast concrete slab at the non-corner location is a first tenon. The first side of the precast concrete slab at the corner location is a second mortise and tenon, and the second side opposite to the first side of the precast concrete slab at the corner location forms a right-angle corner and has a second tenon. The second mortise and tenon are used to mate with the first tenon, and the second tenon is used to mate with the first mortise and tenon. The mortise and tenon are connected by bolts.

[0005] In some embodiments, a pre-embedded sleeve is also included. The pre-embedded sleeve is disposed inside the tenon, and a threaded through hole is provided on the mortise. After the tenon and the mortise are mated, the bolt can pass through the pre-embedded sleeve and be threadedly connected to the threaded through hole.

[0006] In some embodiments, an operating groove is also included, which communicates with the pre-embedded sleeve and is used for the bolt to enter and exit.

[0007] In some embodiments, the tenon is a triangular tenon, the mortise is a triangular mortise, and the tenon and mortise are aligned with the thickness of the precast concrete slab.

[0008] In some embodiments, the bevel angles of the tenon and the mortise are both 45°.

[0009] In some embodiments, the top of the non-corner precast concrete slab is a third tenon, and the bottom is a third mortise.

[0010] In some embodiments, the top of the precast concrete slab at the corner is a fourth tenon, and the bottom is a fourth mortise.

[0011] In some embodiments, a triangular tongue and groove joint is also included, wherein the sides of both the precast concrete slabs at the non-corner locations and the precast concrete slabs at the corner locations are provided with the triangular tongue and groove joint.

[0012] In some embodiments, the operating groove is a wedge-shaped groove, with the wedge-shaped grooves at the bottom and top of the precast concrete slab being vertically arranged, and the wedge-shaped grooves on the sides of the precast concrete slab being horizontally arranged.

[0013] In some embodiments, both the pre-embedded sleeve and the threaded through hole are provided in multiple forms.

[0014] The present invention achieves the following technical advantages over the prior art: The precast concrete slabs at the corners of the concrete shear wall structure provided by this utility model can form right-angle corners, which is equivalent to integrating precast columns into the precast concrete slabs, eliminating the use of precast columns and reducing the types of precast components. The precast concrete slabs at corners and non-corner locations are directly joined using standardized tenons and mortises, eliminating the need for pre-supported spacers and other components, further reducing the types of precast components and enabling rapid assembly of prefabricated buildings. Furthermore, the tenon and mortise design allows for flexible selection of building specifications, and multiple precast concrete slabs from non-corner locations can be used as needed. All connection nodes are dry connections (bolted connections), eliminating or greatly reducing on-site wet work (such as concrete pouring), simplifying operation, requiring relatively low worker skill levels, significantly improving hoisting and assembly speed, and shortening the overall construction period. The interlocking of the tenons and mortises provides good shear resistance and positioning, and with the addition of bolt fastening, a highly reliable rigid node is formed, effectively transmitting vertical and horizontal forces and ensuring the integrity of the structure. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the precast concrete slab at non-corner locations in some embodiments of this utility model; Figure 2 This is a schematic diagram of the structure of the precast concrete slab at the corner in some embodiments of this utility model; Figure 3 This is an enlarged view of the lower left part of the precast concrete slab at a non-corner location in some embodiments of this utility model; Figure 4 This is an enlarged view of the upper right part of the precast concrete slab at a non-corner location in some embodiments of this utility model; Figure 5 This is an enlarged view of the upper right part of the precast concrete slab at the corner in some embodiments of this utility model; Figure 6 This is an assembly structure diagram of the precast concrete slab at the non-corner and the precast concrete slab at the corner in some embodiments of this utility model; Figure 7 This is an overall schematic diagram of the concrete shear wall structure in some embodiments of this utility model.

[0017] In the diagram: 1-Precast concrete slab at a non-corner location; 11-First mortise; 12-Third mortise; 13-First tenon; 14-Third tenon; 2-Precast concrete slab at a corner; 21-Second tenon; 22-Fourth tenon; 23-Right-angle corner; 24-Second mortise; 25-Fourth mortise; 3-Embedded sleeve; 4-Operating groove. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] The purpose of this invention is to provide a concrete shear wall structure to solve the problems existing in the prior art, reduce the need for different types of prefabricated components, and save construction costs.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] like Figures 1-7As shown, this utility model provides a concrete shear wall structure, including a precast concrete slab 1 at a non-corner location and a precast concrete slab 2 at a corner location. The first side of the precast concrete slab 1 at the non-corner location is a first mortise 11, and the second side opposite to the first side is a first tenon 13. The first side of the precast concrete slab 2 at the corner location is a second mortise 24, and the second side opposite to the first side forms a right-angle corner 23 and has a second tenon 21. The second mortise 24 is used to mate with the first tenon 13, and the second tenon 21 is used to mate with the first mortise 11. The mortise and tenon are connected by bolts. The precast concrete slab at the corner location can form a right-angle corner 23, which is equivalent to integrating precast columns into the precast concrete slab, eliminating the use of precast columns and reducing the types of precast components. Precast concrete slabs at corners and non-corner locations are directly joined using standardized tenons and mortises, eliminating the need for pre-supported blocks and other components. This further reduces the types of precast components, enabling rapid assembly of prefabricated buildings. The tenon and mortise design allows for flexible selection of building specifications, allowing multiple non-corner precast concrete slabs to be used as needed. All connections are dry connections (bolted connections), eliminating or significantly reducing on-site wet work (such as concrete pouring). The operation is simple, requiring relatively low worker skill levels, and significantly improving hoisting and assembly speed, shortening the overall construction period. The interlocking of the tenon and mortise provides excellent shear resistance and positioning, and when combined with bolt fastening, forms a highly reliable rigid joint that effectively transmits vertical and horizontal forces (such as wind and seismic forces), ensuring the structural integrity.

[0022] Furthermore, the use of tenons and mortises with bolts allows for larger dimensions of precast concrete slabs 1 at non-corner locations and 2 at corner locations, thereby reducing the number of components used in prefabricated buildings and minimizing splicing seams, thus reducing the difficulty of waterproofing prefabricated concrete buildings.

[0023] In some embodiments, the concrete shear wall structure further includes an embedded sleeve 3, which is disposed within the tenon. The tenon has a threaded through hole. After the tenon and tenon are mated, the bolt can pass through the embedded sleeve 3 and connect threadedly to the threaded through hole. The engagement of the tenon and tenon primarily provides shear resistance and initial positioning. The bolt passing through the embedded sleeve 3 and tightening with the threaded through hole provides strong tensile and compressive forces and a tightening force, locking the wall panels together to form a unified whole capable of sharing the load, enhancing the stiffness of the joint and the overall integrity of the structure, and improving its resistance to horizontal loads (such as seismic forces and wind forces). As a robust metal component embedded in the concrete, the embedded sleeve 3 can evenly transfer the enormous tightening force generated by the bolt to the interior of the concrete tenon, avoiding the risk of stress concentration leading to localized concrete crushing. The mechanical properties (strength, ductility) of the metal-to-metal connection (bolt and embedded sleeve 3, bolt and threaded hole) are far superior to those of a simple concrete-to-metal connection. This type of node has better seismic resistance, meaning that under seismic loads, it can dissipate energy through slight deformation of the metal components, thus preventing brittle structural failure.

[0024] In some embodiments, the concrete shear wall structure further includes an operating groove 4, which communicates with the embedded sleeve 3 and is used for bolt insertion and removal. Workers can operate smoothly without needing to find tools at specific angles, directly improving splicing efficiency and reducing labor intensity. Without the operating groove 4, the ends of bolts (especially those connected to the embedded sleeve 3), wrenches, or power tools would lack the space to extend and complete the tightening operation. The operating groove 4 provides radial and axial operating space for tools, enabling the physical tightening of bolts.

[0025] In some embodiments, the tenon is a triangular tenon, the mortise is a triangular mortise, and the tenon and mortise are aligned with the thickness of the precast concrete slab after mating. The triangular cross-section exhibits superior performance when subjected to shear forces perpendicular to the slab surface (such as horizontal forces caused by wind loads or earthquakes). Its hypotenuse effectively decomposes the horizontal force into compressive stress in the concrete, thereby significantly enhancing the shear and shear resistance of the joint. The bolts can withstand tensile forces generated by external forces (such as wind uplift or overturning moments caused by earthquakes). This combination helps avoid brittle and unreliable failure modes that may occur when bolts are subjected to shear forces, such as shear failure, borehole wall bearing failure, or bolt bending. Even in extreme cases where bolts loosen (although the probability is extremely low), the triangular tenon structure still provides a considerable degree of shear resistance, preventing instantaneous structural failure. After the tenon and mortise are joined, the thickness of the precast concrete slab is consistent. The wall surface after joining is a complete plane without protrusions or depressions, which greatly facilitates the installation of interior and exterior wall panels, insulation layers or decorative layers. The smooth transition avoids stress concentration at the point where the panel thickness changes, and improves the overall integrity of the wall panel.

[0026] In some embodiments, the bevel angles of the tenon and mortise are both 45°. When a wall panel tends to move downwards or inwards under gravity or horizontal force, this angle generates sufficient friction to resist the movement, ensuring the joint remains stable from the initial stress stage. If the angle is too small (too gentle), the tenon risks slipping out of the mortise; if the angle is too large (too steep), the decomposed pressure component decreases, while the component causing the tenon to lift increases, which is detrimental to stability. The 45° angle achieves an excellent balance between anti-slip and anti-lifting properties. During wall panel hoisting, the two 45° bevels naturally form a 90° V-shaped guide groove, providing a certain margin of error for the tenon to fall into the mortise. Even with slight lateral deviations, the bevels can guide the wall panel into the correct position, achieving active alignment, reducing the difficulty of precise positioning, and improving hoisting efficiency.

[0027] In some embodiments, the top of the precast concrete slab 1 at non-corner locations has a third tenon 14, and the bottom has a third mortise 12; the top of the precast concrete slab 2 at corner locations has a fourth tenon 22, and the bottom has a fourth mortise 25. The top of the precast concrete slab 2 at corner locations and the bottom of the precast concrete slab 1 at non-corner locations both have tenons, and both have mortises, allowing for multi-layer assembly. Furthermore, the vertical connections (top and bottom tenons and mortises) primarily bear the dead load (structural self-weight) and the live load (usage load). The horizontal connections (left and right tenons and mortises with bolts) primarily bear the horizontal load (wind, earthquake) and ensure overall integrity. The combination of these two elements forms a stable spatial box structure, enabling the building to resist various loads from all directions, resulting in complete and reliable structural performance.

[0028] In some embodiments, the concrete shear wall structure further includes triangular tongue and groove joints. Triangular tongue and groove joints are provided on the sides of both the precast concrete slab 1 at the non-corner locations and the precast concrete slab 2 at the corner locations. The triangular tongue and groove joints on the precast concrete slab 2 at the corner locations are joined with the triangular tongue and groove joints on the precast concrete slab 1 at the non-corner locations, and then connected by bolts inserted into the embedded sleeve 3 and threaded through holes. The extended water penetration path formed by the triangular tongue and groove joints effectively blocks the passage of liquid water. Furthermore, the cavity formed by the tongue and groove joints can provide a certain degree of pressure equalization, reducing the internal and external pressure difference, thereby fundamentally reducing the water penetration force. This allows the wall to have excellent temporary waterproofing capabilities even before the exterior finish is fully constructed. During hoisting, the inclined surface of the triangle naturally plays a guiding and positioning role, ensuring precise alignment of adjacent wall panels both within the wall plane and in the direction of the projected plane.

[0029] In some embodiments, the operating groove 4 is a wedge-shaped groove. The wedge-shaped grooves at the bottom and top of the precast concrete slab are vertically arranged, while the wedge-shaped grooves on the sides of the precast concrete slab are horizontally arranged. The vertically arranged bottom and top wedge-shaped grooves are used to connect upper and lower wall panels. Bolts are inserted vertically. Setting the grooves vertically (i.e., the direction of the slope is consistent with the bolt insertion direction) best conforms to the force logic and operating habits, providing the most direct and unobstructed passage for vertical bolt installation. The horizontally arranged side wedge-shaped grooves are used to connect adjacent wall panels on the same floor. Bolts are inserted horizontally. The horizontally arranged grooves also provide the optimal passage for horizontally operated bolts.

[0030] In some embodiments, multiple embedded sleeves 3 and threaded through holes are provided. The combined action of multiple bolts can evenly distribute the huge connection forces (such as tensile and shear forces caused by wind loads and seismic forces) over a larger area of ​​the tenon and mortise, reducing the stress level of the concrete and the connector itself, and improving the safety reserve and load-bearing capacity of the joint.

[0031] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A concrete shear wall structure, characterized in that: The system includes precast concrete slabs at non-corner locations and precast concrete slabs at corner locations. The first side of the precast concrete slab at non-corner location is a first mortise, and the second side opposite to the first side of the precast concrete slab at non-corner location is a first tenon. The first side of the precast concrete slab at corner location is a second mortise, and the second side opposite to the first side of the precast concrete slab at corner location forms a right-angle corner and has a second tenon. The second mortise is used to mate with the first tenon, and the second tenon is used to mate with the first mortise. The mortise and tenon are connected by bolts.

2. The concrete shear wall structure according to claim 1, characterized in that: It also includes a pre-embedded sleeve, which is set inside the tenon. The tenon groove is provided with a threaded through hole. After the tenon and the tenon groove are connected, the bolt can pass through the pre-embedded sleeve and be threadedly connected to the threaded through hole.

3. The concrete shear wall structure according to claim 2, characterized in that: It also includes an operating groove, which communicates with the pre-embedded sleeve and is used for the bolt to enter and exit.

4. The concrete shear wall structure according to claim 1, characterized in that: The tenon is a triangular tenon, the mortise is a triangular mortise, and the tenon and mortise are aligned with the thickness of the precast concrete slab.

5. The concrete shear wall structure according to claim 4, characterized in that: The bevel angles of the tenon and the mortise are both 45°.

6. The concrete shear wall structure according to claim 1, characterized in that: The top of the precast concrete slab at the non-corner location is the third tenon, and the bottom is the third mortise.

7. The concrete shear wall structure according to claim 6, characterized in that: The top of the precast concrete slab at the corner is the fourth tenon, and the bottom is the fourth mortise.

8. The concrete shear wall structure according to claim 1, characterized in that: It also includes triangular tongue and groove joints, with the triangular tongue and groove joints provided on the sides of both the precast concrete slabs at non-corner locations and the precast concrete slabs at corner locations.

9. The concrete shear wall structure according to claim 3, characterized in that: The operating groove is a wedge-shaped groove. The wedge-shaped grooves at the bottom and top of the precast concrete slab are vertically arranged, while the wedge-shaped grooves on the sides of the precast concrete slab are horizontally arranged.

10. The concrete shear wall structure according to claim 2, characterized in that: Both the pre-embedded sleeve and the threaded through hole are provided in multiple forms.

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