Fabricated reinforced concrete frame shear wall

Abstract

The utility model discloses an assembly type reinforced concrete frame shear wall which comprises a U-shaped frame, embedded steel bars are arranged on the surface of the upper end of the U-shaped frame, a reinforced concrete cross beam is fixedly installed on the upper surface of the U-shaped frame, and the inner side surfaces of the two ends of the reinforced concrete cross beam are connected to the outer surfaces of the embedded steel bars in a sleeved mode. A concave groove is formed in the surface of the upper end of the reinforced concrete cross beam, a positioning supporting plate is clamped in the concave groove, a penetrating opening is formed in the outer surface of the positioning supporting plate and connected to the outer surface of an embedded steel bar in a sleeving mode, and the outer surface of the embedded steel bar is connected with a first fastening nut through a thread; vertical steel bars are embedded in the inner side surface of the lower end of the U-shaped frame, a reinforced concrete wallboard is poured on the inner side surface of the U-shaped frame, the U-shaped frame structure is arranged, the top of the U-shaped frame structure is covered and fixed with a reinforced concrete cross beam, longitudinal and transverse steel bar structures are inserted into the inner end of the U-shaped frame structure, and then a reinforced concrete wallboard structure is poured, so that installation and construction are convenient, and supporting stress is improved.

Description

Technical Field

[0001] The utility model relates to the field of prefabricated reinforced concrete frame shear walls, and more specifically, to a prefabricated reinforced concrete frame shear wall. Background Technique

[0002] Frame shear walls are commonly used structural forms in building structures. With the continuous improvement of building code requirements and the increase in the height of high-rise and super high-rise buildings, the demand for high-performance shear walls is increasing. In the past few decades, reinforced concrete shear walls, as a lateral force resisting system, have been widely studied and applied in high-rise building structures with high ductility, high initial stiffness, and good energy dissipation. Reinforced concrete walls have advantages such as strong modelability and good integrity, which can reduce seismic response and control structural cost. In addition, reinforced concrete shear walls can also be applied to the reinforcement and renovation of existing building structures;

[0003] Prefabricated reinforced concrete frame shear walls can utilize the mechanical properties of both reinforced concrete frames and reinforced concrete shear walls at the same time. The reinforced concrete frame structure follows the seismic design principle of "strong joints and weak members". Plastic hinge regions often appear in the connection areas between reinforced concrete beams and columns. Under seismic action, inclined tension bands will be formed in the reinforced concrete shear walls;

[0004] In its prior art, for example, application publication number CN115897859A discloses a prefabricated reinforced concrete frame shear wall and an assembly method. In this technical solution, pin connectors are used to achieve prefabricated construction. SMA bolts are arranged on the pin connectors to provide energy dissipation capacity and self-centering capacity for the frame structure, enabling the reinforced concrete frame to self-recover its function after an earthquake; Prestressing tendons are symmetrically arranged on both sides of the reinforced concrete wall panel and anchored on the reinforced concrete columns. The prestressing tendons provide out-of-plane restraint for the wall panel through the ear plates embedded in the reinforced concrete wall panel, and a prestressed structure form is adopted to improve the self-recovery function of the wall after an earthquake, reduce structural deformation and reduce structural damage. In addition, the upper and lower edges of the reinforced concrete wall panel are T-shaped ends, and grooves are provided at the bottom of the upper reinforced concrete beam and the top of the lower reinforced concrete beam. The T-shaped ends of the reinforced concrete wall panel can be stuck in the grooves, and then the gaps are sealed with structural adhesive to achieve the connection of the upper and lower reinforced concrete beams;

[0005] In its prior art, a structure connecting the upper and lower inner sides of the reinforced concrete cross beam is adopted, and its butt joint structure is complex, the vertical support stress is low, the stability is poor, and the installation and construction are inconvenient. Summary of the Utility Model

[0006] Aiming at the problems existing in the prior art, the purpose of the present utility model is to provide a prefabricated reinforced concrete frame shear wall. By setting a U-shaped frame structure, its top covers and fixes a reinforced concrete cross beam, the inner end penetrates vertical and horizontal steel bar structures, and then a reinforced concrete wall panel structure is poured. Its installation and construction are convenient, and the support stress is improved.

[0007] To solve the above problems, the present utility model adopts the following technical solutions.

[0008] A prefabricated reinforced concrete frame shear wall, including a U-shaped frame. The upper surface of the U-shaped frame is provided with embedded steel bars. The upper surface of the U-shaped frame is fixedly installed with a reinforced concrete cross beam. The inner surfaces of both ends of the reinforced concrete cross beam are sleeved on the outer surface of the embedded steel bars. The upper surface of the reinforced concrete cross beam is provided with a recessed groove. A positioning support plate is clamped in the recessed groove. The outer surface of the positioning support plate is provided with an insertion opening and is sleeved on the outer surface of the embedded steel bars. The outer surface of the embedded steel bar is threadedly connected with a first fastening nut. The lower inner surface of the U-shaped frame is embedded with vertical steel bars. The upper ends of the vertical steel bars are inserted into the lower inner surface of the reinforced concrete cross beam. The inner surface of the U-shaped frame is penetrated and embedded with horizontal steel bars. The inner surface of the U-shaped frame is poured with a reinforced concrete wall panel. By setting a U-shaped frame structure, its top covers and fixes a reinforced concrete cross beam, the inner end penetrates vertical and horizontal steel bar structures, and then a reinforced concrete wall panel structure is poured. Its installation and construction are convenient, and the support stress is improved.

[0009] Further, the outer ends of the horizontal steel bars are threadedly connected with second fastening nuts, and the second fastening nuts are distributed on the outer surfaces of both sides of the horizontal steel bars.

[0010] Further, the vertical steel bars are evenly distributed on the lower inner surface of the U-shaped frame.

[0011] Further, the horizontal steel bars are evenly distributed on the inner surface of the U-shaped frame.

[0012] Further, the connection points of the vertical steel bars and the horizontal steel bars are fixed by wire bundling.

[0013] Further, the lower surface of the reinforced concrete cross beam is provided with a clamping groove, and the outer surface of the upper end of the vertical steel bar is clamped on the inner surface of the clamping groove of the reinforced concrete cross beam.

[0014] Further, the embedded steel bars are placed inside the recessed groove of the reinforced concrete cross beam, and the surface does not protrude.

[0015] Compared with the prior art, the advantages of the present utility model are as follows:

[0016] (1) By setting up a U-shaped frame structure, its top covers and fixes a reinforced concrete cross beam, the inner end penetrates the longitudinal and transverse steel bar structures, and then the reinforced concrete wall panel structure is poured. Its installation and construction are convenient, and the support stress is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 It is a sectional view of the overall structure of the present utility model;

[0019] Figure 3 It is a top view of the overall structure of the present utility model;

[0020] Figure 4 It is a top sectional view of the overall structure of the present utility model.

[0021] Explanation of the reference numerals in the drawings:

[0022] 1 U-shaped frame, 2 embedded steel bars, 3 reinforced concrete cross beam, 4 recessed groove, 5 positioning support plate, 6 first fastening nut, 7 vertical steel bar, 8 transverse steel bar, 9 reinforced concrete wall panel, 10 second fastening nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment 1

[0025] Please refer to Figures 1-4, a prefabricated reinforced concrete frame shear wall, including a U-shaped frame 1. There are embedded steel bars 2 on the upper surface of the U-shaped frame 1. A reinforced concrete cross beam 3 is fixedly installed on the upper surface of the U-shaped frame 1. The inner surfaces at both ends of the reinforced concrete cross beam 3 are sleeved on the outer surface of the embedded steel bars 2. There is a recessed groove 4 on the upper surface of the reinforced concrete cross beam 3. A positioning support plate 5 is clamped in the recessed groove 4. The outer surface of the positioning support plate 5 is provided with an insertion opening and sleeved on the outer surface of the embedded steel bars 2. A first fastening nut 6 is threadedly connected to the outer surface of the embedded steel bars 2. There are vertical steel bars 7 embedded in the inner surface at the lower end of the U-shaped frame 1. The upper ends of the vertical steel bars 7 are inserted into the inner surface at the lower end of the reinforced concrete cross beam 3. Horizontal steel bars 8 are inserted and embedded in the inner surface of the U-shaped frame 1. A reinforced concrete wall panel 9 is cast on the inner surface of the U-shaped frame 1; by setting the U-shaped frame structure, its top is covered and fixed with a reinforced concrete cross beam, and vertical and horizontal steel bar structures are inserted at the inner end, and then the reinforced concrete wall panel structure is cast, which is convenient for installation and construction and improves the support stress;

[0026] The outer ends of the horizontal steel bars 8 are threadedly connected with second fastening nuts 10. The second fastening nuts 10 are distributed on the outer surfaces on both sides of the horizontal steel bars 8; they can be locked and positioned;

[0027] The vertical steel bars 7 are evenly distributed on the inner surface at the lower end of the U-shaped frame 1;

[0028] The horizontal steel bars 8 are evenly distributed on the inner surface of the U-shaped frame 1;

[0029] The connection points of the vertical steel bars 7 and the horizontal steel bars 8 are fixed by wire bundling;

[0030] There is a clamping groove on the lower surface of the reinforced concrete cross beam 2. The outer surface of the upper end of the vertical steel bar 7 is clamped on the inner surface of the clamping groove of the reinforced concrete cross beam 2;

[0031] The embedded steel bars 2 are placed inside the recessed groove 4 of the reinforced concrete cross beam 3, and the surface does not protrude, so it will not protrude and affect subsequent construction;

[0032] During use, due to the embedded steel bars 2 provided on the upper surface of the U-shaped frame 1, a reinforced concrete cross beam 3 is fixedly installed on the upper surface of the U-shaped frame 1. The inner surfaces at both ends of the reinforced concrete cross beam 3 are sleeved on the outer surface of the embedded steel bars 2. There is a recessed groove 4 on the upper surface of the reinforced concrete cross beam 3. The outer surface of the positioning support plate 5 is provided with an insertion opening and sleeved on the outer surface of the embedded steel bars 2. A first fastening nut 6 is threadedly connected to the outer surface of the embedded steel bars 2. By tightening the first fastening nut 6 to lock and fix the positioning support plate 5, the reinforced concrete cross beam 3 can be fixed on the surface of the U-shaped frame 1, with stable support and stable installation;

[0033] Vertical steel bars 7 are embedded in the inner surface of the lower end of the U-shaped frame 1, and the upper ends of the vertical steel bars 7 are inserted into the inner surface of the lower end of the reinforced concrete cross beam 3. Transverse steel bars 8 are embedded in the inner surface of the U-shaped frame 1 in an interspersed manner, and are fixed by wire bundling at the connection points of the vertical steel bars 7 and the transverse steel bars 8; the fixing is firm. The reinforced concrete wall panel 9 is poured on the inner surface of the U-shaped frame 1; the interior can be supported by the transverse steel bars 8 and the vertical steel bars 7, improving the firmness strength of the skeleton, and the overall construction is convenient and simple.

[0034] The above is only a preferred specific embodiment of the present utility model; however, the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and its improvement concept of the present utility model, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. An assembled reinforced concrete frame shear wall, comprising a U-shaped frame (1), characterized in that: The upper end surface of the U-shaped frame (1) is provided with embedded steel bars (2), and a reinforced concrete beam (3) is fixedly installed on the upper surface of the U-shaped frame (1). The inner surfaces of both ends of the reinforced concrete beam (3) are sleeved on the outer surface of the embedded steel bars (2). The upper end surface of the reinforced concrete beam (3) is provided with a recessed groove (4), and a positioning support plate (5) is clamped in the recessed groove (4). The outer surface of the positioning support plate (5) is provided with an insertion opening and is sleeved on the outer surface of the embedded steel bars (2). The outer surface of the embedded steel bars (2) is connected to a first fastening nut (6) by threading. The lower end inner surface of the U-shaped frame (1) is embedded with a vertical steel bar (7), and the upper end of the vertical steel bar (7) is inserted into the lower end inner surface of the reinforced concrete beam (3). The inner surface of the U-shaped frame (1) is embedded with a transverse steel bar (8), and the inner surface of the U-shaped frame (1) is cast with a reinforced concrete wall panel (9).

2. The assembled reinforced concrete frame shear wall according to claim 1, characterized in that: The outer ends of the transverse steel bars (8) are connected to second fastening nuts (10) via threads, and the second fastening nuts (10) are distributed on the outer surfaces of both sides of the transverse steel bars (8).

3. The assembled reinforced concrete frame shear wall according to claim 1 is characterized in that: The vertical steel bars (7) are evenly distributed on the inner surface of the lower end of the U-shaped frame (1).

4. The assembled reinforced concrete frame shear wall according to claim 1, characterized in that: The transverse steel bars (8) are evenly distributed on the inner surface of the U-shaped frame (1).

5. The assembled reinforced concrete frame shear wall according to claim 1, characterized in that: The connection points of the vertical steel bars (7) and the transverse steel bars (8) are fixed by tying with steel wires.

6. The assembled reinforced concrete frame shear wall according to claim 1, characterized in that: The lower surface of the reinforced concrete cross beam (3) is provided with a clamping groove, and the upper end outer surface of the vertical steel bar (7) is clamped to the inner side surface of the clamping groove of the reinforced concrete cross beam (3).

7. The assembled reinforced concrete frame shear wall according to claim 1, characterized in that: The embedded steel bars (2) are placed inside the recessed groove (4) of the reinforced concrete beam (3) and do not protrude from the surface.

Images