Subway station assembly type reinforcement cage profile steel connector

Abstract

The utility model discloses a subway station assembly type steel reinforcement cage section steel connector which comprises a soil-facing main reinforcement on the soil-facing side of a steel reinforcement cage and a soil-backing main reinforcement on the soil-backing side of the steel reinforcement cage, the soil-facing main reinforcement is connected with first U-shaped steel, and the soil-backing main reinforcement is connected with second U-shaped steel. The first U-shaped steel and the second U-shaped steel are in back-type contact and are fixed through a connecting assembly, and the soil-facing main reinforcement and the soil-backing main reinforcement are coplanar. The soil-facing side main reinforcement and the soil-backing side main reinforcement of the fabricated reinforcement cage are welded through the U-shaped steel to form an integral structure, and the U-shaped steel not only plays a role in supporting the soil-backing side main reinforcement, but also can fix the relative positions of the soil-facing side main reinforcement and the soil-backing side main reinforcement. In the transportation and hoisting process, the reinforcement cage can be effectively prevented from deforming, the field binding and welding difficulty of complex nodes of the reinforcement cage is reduced, field construction personnel are reduced, the blanking size of a reinforcement processing plant is accurate, the product precision is high, and the implementation rate of the complex reinforcement nodes is high.

Description

Technical Field

[0001] This utility model belongs to the field of prefabricated underground structure engineering, specifically relating to a prefabricated steel cage connection joint for subway stations. Background Technology

[0002] Currently, as urban development goals shift from above-ground to underground, underground structures and above-ground structures differ fundamentally from both an engineering environment and construction technology perspective. Relatively speaking, underground construction conditions are more limited, the stress is more complex, and the construction is more difficult.

[0003] The construction speed of the main structure of a subway station has a significant impact on the project's progress and safety, and the main constraint on the construction speed is often the binding of the reinforcing cage. Currently, the binding and welding of the reinforcing cage for the main structure of subway stations is mostly done on-site. Due to the limitations of construction space and precision, this results in high labor input, poor working environment, low construction efficiency, high material loss, non-standard binding quality, and a large work site area. Summary of the Invention

[0004] This utility model is proposed to solve the problems existing in the prior art, and its purpose is to provide a prefabricated steel cage connection joint for subway stations.

[0005] The technical solution of this utility model is: a prefabricated steel cage connection joint for subway stations, including a soil-facing main reinforcement bar on the soil-facing side of the steel cage and a soil-receding main reinforcement bar on the soil-receding side of the steel cage. The soil-facing main reinforcement bar is connected to a first U-shaped steel, and the soil-receding main reinforcement bar is connected to a second U-shaped steel. The first U-shaped steel and the second U-shaped steel are in back-to-back contact and are fixed by a connecting component. The soil-facing main reinforcement bar and the soil-receding main reinforcement bar are coplanar.

[0006] Furthermore, both the first U-shaped steel and the second U-shaped steel include a top plate, a vertical plate, and a bottom plate, which together form a U-shape.

[0007] Furthermore, the main reinforcement bars for receiving soil include a first main reinforcement bar and a third main reinforcement bar, which are parallel vertically.

[0008] Furthermore, the backing reinforcement includes a second main reinforcement and a fourth main reinforcement, which are parallel vertically.

[0009] Furthermore, the first main reinforcement is connected to the top plate of the second U-shaped steel, and the third main reinforcement is connected to the bottom plate of the second U-shaped steel.

[0010] Furthermore, the second main reinforcement is connected to the top plate of the first U-shaped steel, and the fourth main reinforcement is connected to the bottom plate of the first U-shaped steel.

[0011] Furthermore, through holes are formed in the vertical plates of the first U-shaped steel and the second U-shaped steel, and the connecting assembly passes through the through holes to fix the two together.

[0012] Furthermore, the connecting components are bolts and nuts. After the bolts pass through the through holes in the first U-shaped steel and the second U-shaped steel vertical plates, the nuts are screwed on to fix them.

[0013] The beneficial effects of this utility model are as follows:

[0014] This utility model forms an integral structure by welding the main reinforcement bars on the soil-facing side and the soil-repellent side of the prefabricated steel cage with U-shaped steel. The U-shaped steel not only supports the main reinforcement bars on the soil-repellent side, but also fixes the relative positions of the main reinforcement bars on the soil-facing and soil-repellent sides.

[0015] This invention can effectively prevent deformation of the rebar cage during transportation and hoisting, reduce the difficulty of on-site binding and welding of complex nodes of the rebar cage, reduce the number of on-site construction personnel, ensure accurate material cutting dimensions and high product precision in rebar processing plants, achieve a high realization rate of complex rebar nodes, reduce the impact of construction errors and installation accuracy on structural stress, and enable large-scale industrial production in a short time, thereby improving production efficiency. Attached Figure Description

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

[0017] Figure 2 This is a schematic diagram of the in-factory processing of this utility model;

[0018] Figure 3 This is a schematic diagram of the connection of the U-shaped steel in this utility model;

[0019] 1. First main reinforcement bar; 2. Second main reinforcement bar

[0020] 3 First U-shaped steel 4 Second U-shaped steel

[0021] 5. Third main reinforcement bar; 6. Fourth main reinforcement bar

[0022] 7. Connecting bolts. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings and embodiments:

[0024] like Figures 1 to 3 As shown, a prefabricated steel cage connection joint for subway stations includes a soil-facing main reinforcement bar on the soil-facing side of the steel cage and a soil-receding main reinforcement bar on the soil-receding side of the steel cage. The soil-facing main reinforcement bar is connected to a first U-shaped steel bar 3, and the soil-receding main reinforcement bar is connected to a second U-shaped steel bar 4. The first U-shaped steel bar 3 and the second U-shaped steel bar 4 are in back-to-back contact and are fixed by a connecting component. The soil-facing main reinforcement bar and the soil-receding main reinforcement bar are coplanar.

[0025] Both the first U-shaped steel 3 and the second U-shaped steel 4 include a top plate, a vertical plate, and a bottom plate, which together form a U-shape.

[0026] The main reinforcement bars for receiving soil include a first main reinforcement bar 1 and a third main reinforcement bar 5, which are parallel vertically.

[0027] The backing reinforcement includes a second main reinforcement 2 and a fourth main reinforcement 6, which are parallel vertically.

[0028] The first main reinforcement 1 is connected to the top plate of the second U-shaped steel 4, and the third main reinforcement 5 is connected to the bottom plate of the second U-shaped steel 4.

[0029] The second main reinforcement 2 is connected to the top plate of the first U-shaped steel 3, and the fourth main reinforcement 6 is connected to the bottom plate of the first U-shaped steel 3.

[0030] Through holes are formed in the vertical plates of the first U-shaped steel 3 and the second U-shaped steel 4, and the connecting component passes through the through holes to fix the two.

[0031] The connecting components are bolts and nuts. After the bolts pass through the through holes in the vertical plates of the first U-shaped steel 3 and the second U-shaped steel 4, the nuts are screwed on to fix them.

[0032] Specifically, the top and bottom plates of the first U-shaped steel 3 and the second U-shaped steel 4 serve as the two side flanges. The first U-shaped steel 3 is connected to the second main reinforcement 2 and the fourth main reinforcement 6 by welding. The second U-shaped steel 4 is connected to the first main reinforcement 1 and the third main reinforcement 5 by welding.

[0033] Specifically, the first U-shaped steel 3 and the second U-shaped steel 4 are located at both ends of the main body of the steel cage. The first U-shaped steel 3 and the second U-shaped steel 4 are connected by connecting bolts to connect the main reinforcement bars on the soil-facing side and the soil-repellent side of the prefabricated steel cage into a whole. The first U-shaped steel 3 and the second U-shaped steel 4 not only support the main reinforcement bars on the soil-repellent side, but also fix the relative positions of the main reinforcement bars on the soil-facing side and the soil-repellent side.

[0034] Specifically, the first main reinforcement 1, the second main reinforcement 2, the third main reinforcement 5, and the fourth main reinforcement 6 are single-row reinforcements, which facilitates welding with the flanges of the first U-shaped steel 3 and the second U-shaped steel 4.

[0035] Specifically, the first main reinforcement 1, the second main reinforcement 2, the third main reinforcement 5, and the fourth main reinforcement 6 are double-row reinforcements, the flanges of the first U-shaped steel 3 and the second U-shaped steel 4 are thickened flanges, and the first main reinforcement 1, the second main reinforcement 2, the third main reinforcement 5, and the fourth main reinforcement 6 are staggered.

[0036] Specifically, the welding of the first main reinforcement 1, the second main reinforcement 2, the third main reinforcement 5, and the fourth main reinforcement 6 is double-sided welding, and the welding length is five times the diameter of the reinforcement.

[0037] Specifically, the flange thickness of the first U-shaped steel 3 and the second U-shaped steel 4 needs to meet the tensile strength verification according to the application scenario.

[0038] Specifically, the thickness of the vertical plates of the first U-shaped steel 3 and the second U-shaped steel 4 needs to meet the tensile and bending strength verification according to the usage scenario.

[0039] Specifically, the number of connecting bolts used to connect the first U-shaped steel 3 and the second U-shaped steel 4 is six. The connecting bolts are symmetrically distributed about the center of the U-shaped steel, and the bolt type needs to meet the tensile strength verification according to the usage scenario.

[0040] like Figure 2 As shown, the main reinforcement steel joint connection structure of the steel cage is in the finished state of factory processing. When the prefabricated steel cage is processed in the factory, after the steel cage is welded to the jig, the first U-shaped steel 3 is welded to the second main reinforcement 2 and the fourth main reinforcement 6 to form a steel cage module. At this time, the first U-shaped steel 3 plays the role of supporting and fixing the steel cage.

[0041] The assembly method of this utility model is as follows:

[0042] A. In-factory processing

[0043] a1. According to the design drawings, cut the corresponding main bars, distribution bars and tie bars, and perform processing procedures such as bending and threading, and arrange them on the prefabricated steel cage jig to complete the welding between the bars;

[0044] a2. Arrange the U-shaped steel at the connection end of the prefabricated steel cage and weld it to the main reinforcement bars on the soil-facing side and the soil-repellent side;

[0045] a3. Transport the prefabricated steel cage and jig to the site.

[0046] B. On-site installation

[0047] b1. Use a crane to lift the prefabricated steel cage into the foundation pit and move it into place;

[0048] b2. Align the steel joints at the connection ends of the reinforcing cage that need to be connected, and ensure that the first U-shaped steel and the second U-shaped steel are tightly attached at the connection position;

[0049] b3. Connect the U-shaped steel sections using connecting bolts to meet the bolt connection specifications.

[0050] This utility model forms an integral structure by welding the main reinforcement bars on the soil-facing side and the soil-repellent side of the prefabricated steel cage with U-shaped steel. The U-shaped steel not only supports the main reinforcement bars on the soil-repellent side, but also fixes the relative positions of the main reinforcement bars on the soil-facing and soil-repellent sides.

[0051] This invention can effectively prevent deformation of the rebar cage during transportation and hoisting, reduce the difficulty of on-site binding and welding of complex nodes of the rebar cage, reduce the number of on-site construction personnel, ensure accurate material cutting dimensions and high product precision in rebar processing plants, achieve a high realization rate of complex rebar nodes, reduce the impact of construction errors and installation accuracy on structural stress, and enable large-scale industrial production in a short time, thereby improving production efficiency.

Claims

1. A prefabricated steel cage connection joint for subway stations, comprising main reinforcing bars on the soil-facing side of the steel cage and main reinforcing bars on the soil-repelling side of the steel cage, characterized in that: The soil-facing main reinforcement is connected to the first U-shaped steel (3), and the soil-backing main reinforcement is connected to the second U-shaped steel (4). The first U-shaped steel (3) and the second U-shaped steel (4) are in back-to-back contact and are fixed by a connecting component. The soil-facing main reinforcement and the soil-backing main reinforcement are coplanar.

2. The prefabricated steel cage connection joint for subway stations according to claim 1, characterized in that: The first U-shaped steel (3) and the second U-shaped steel (4) both include a top plate, a vertical plate, and a bottom plate, which together form a U-shape.

3. The prefabricated steel cage connection joint for subway stations according to claim 2, characterized in that: The main reinforcement bars for receiving soil include a first main reinforcement bar (1) and a third main reinforcement bar (5), which are parallel vertically.

4. The prefabricated steel cage connection joint for subway stations according to claim 2, characterized in that: The backing reinforcement includes a second main reinforcement (2) and a fourth main reinforcement (6), which are parallel vertically.

5. A prefabricated steel cage connection joint for subway stations according to claim 3, characterized in that: The first main reinforcement (1) is connected to the top plate of the second U-shaped steel (4), and the third main reinforcement (5) is connected to the bottom plate of the second U-shaped steel (4).

6. The prefabricated steel cage connection joint for subway stations according to claim 4, characterized in that: The second main reinforcement (2) is connected to the top plate of the first U-shaped steel (3), and the fourth main reinforcement (6) is connected to the bottom plate of the first U-shaped steel (3).

7. A prefabricated steel cage connection joint for subway stations according to claim 2, characterized in that: Through holes are formed in the vertical plates of the first U-shaped steel (3) and the second U-shaped steel (4), and the connecting component passes through the through holes to fix the two.

8. A prefabricated steel cage connection joint for subway stations according to claim 7, characterized in that: The connecting components are bolts and nuts. After the bolts pass through the through holes in the vertical plates of the first U-shaped steel (3) and the second U-shaped steel (4), the nuts are screwed on to fix them.

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