Foundation pit supporting structure

Abstract

The utility model discloses a foundation pit supporting structure, and relates to the technical field of foundation pit supporting, the foundation pit supporting structure comprises a foundation pit supporting assembly, the foundation pit supporting assembly comprises a positioning supporting installation plate, a first stacking supporting plate and a second stacking supporting plate which are stacked from bottom to top, and the top of the first stacking supporting plate and the top of the second stacking supporting plate are both provided with trapezoidal slots; the bottom face of the first stacked supporting plate and the bottom face of the second stacked supporting plate are fixedly connected with trapezoid inserting blocks matched with the trapezoid inserting grooves. According to the depth of a foundation pit, a proper number of the first stacked supporting plates and the second stacked supporting plates can be selected to be in butt joint and stacked with the positioning supporting mounting plate, downward moving adaptation is achieved along with increase of the excavation depth, and through inserting matching of the square inserting rods and the square inserting grooves, inserting matching of the trapezoidal inserting blocks and the trapezoidal inserting grooves and fixing of the fastening bolts, the supporting effect is good. The height of the foundation pit supporting assembly can be flexibly increased, and the supporting requirements of foundation pits with different depths are met.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit support technology, specifically to a foundation pit support structure. Background Technology

[0002] Foundation pit support plays a crucial role in actual foundation pit construction. It is an important measure to ensure the stability of the foundation pit sidewalls. The foundation pit is a pit excavated according to the foundation elevation and foundation plane dimensions at the foundation design location. It plays an important role in the stability of the building. Currently, foundation pit support structures mostly use cumbersome brackets, which are not convenient to adjust the support and retaining walls according to the excavation depth, resulting in low support efficiency and a high risk of collapse. Utility Model Content

[0003] The purpose of this utility model is to provide a foundation pit support structure to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A foundation pit support structure includes a foundation pit support assembly, wherein the foundation pit support assembly includes a positioning support mounting plate, a first stacked support plate, and a second stacked support plate stacked from bottom to top;

[0006] The top of both the first and second stacked support plates is provided with trapezoidal slots, and the bottom surfaces of both the first and second stacked support plates are fixedly connected with trapezoidal inserts that are compatible with the trapezoidal slots. The upper surfaces of both the first and second stacked support plates near both sides are provided with square slots, and the bottom surfaces of both the first and second stacked support plates are fixedly connected with square inserts that are compatible with the square slots.

[0007] Both the first and second stacked support plates have threaded mating holes on their front sides that extend into the trapezoidal slot. The inner wall of the threaded mating hole is screwed with a fastening bolt, and the tail end of the fastening bolt is threaded through the trapezoidal insert. The back of the second stacked support plate is provided with a ground fixing component with adjustable height.

[0008] A further improvement of this utility model is that the trapezoidal plug is movably connected to the inner wall of the trapezoidal slot, and the square plug is movably connected to the inner wall of the square slot.

[0009] A further improvement of the present invention is that the ground fixing component includes a grounding support plate, one end of which is rotatably connected to a matching ring via a connecting rotating seat, and a positioning T-shaped plate is slidably sleeved on the inner wall of the matching ring, and the positioning T-shaped plate is fixedly connected to the back of the superimposed support plate two.

[0010] A further improvement of this utility model is that: the outer wall of the positioning T-shaped plate is provided with a positioning hole, and the inner wall of the positioning hole is threaded with a positioning bolt that passes through the movable adapter ring.

[0011] A further improvement of this utility model is that a reinforcing anchor rod is slidably inserted into the grounding support plate.

[0012] A further improvement of this utility model is that a fixing insert is fixedly connected to the bottom surface of the positioning support mounting plate.

[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0014] This utility model provides a foundation pit support structure. Depending on the depth of the foundation pit, an appropriate number of stacked support plates and stacked support plates can be selected and stacked with the positioning support installation plate. As the excavation depth increases, the structure can be moved down to adapt to the new location. Through the insertion and cooperation of square rods and square slots, trapezoidal blocks and trapezoidal slots, and the fixing of fastening bolts, the height of the foundation pit support components can be flexibly increased to meet the support requirements of foundation pits of different depths.

[0015] This utility model provides a foundation pit support structure. Initial positioning is achieved by inserting square rods and trapezoidal blocks from the bottom of the stacked support plate into corresponding slots, followed by fixing the trapezoidal blocks with fastening bolts, making installation convenient. Simultaneously, in the ground fixing assembly, the position of the adjustable matching ring on the positioning T-shaped plate is fixed with positioning bolts, and then fixed to the ground using reinforcing anchor rods on the grounding support plate, making the foundation pit support assembly more stable. Furthermore, the fixing plate on the bottom surface of the positioning support mounting plate further enhances the overall stability. Multiple sets of foundation pit support components can also be used side-by-side via slots and blocks to enhance the support effect. Attached Figure Description

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

[0017] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the disassembly structure of this utility model;

[0019] Figure 4 This is an enlarged schematic diagram of the structure at point A of this utility model;

[0020] Figure 5 This is a schematic diagram of the separated structure of the first and second superimposed support plates of this utility model.

[0021] In the diagram: 1. Excavation pit support assembly; 2. Positioning support mounting plate; 3. Overlapping support plate one; 4. Overlapping support plate two; 5. Fixing insert plate; 6. Positioning T-shaped plate; 7. Adaptive ring; 8. Positioning hole; 9. Positioning bolt; 10. Connecting rotating seat; 11. Trapezoidal slot; 12. Trapezoidal insert block; 13. Square slot; 14. Square insert rod; 15. Threaded mating hole; 16. Fastening bolt; 17. Reinforcing anchor rod; 18. Grounding support plate. Detailed Implementation

[0022] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] The present invention will be further described in detail below with reference to embodiments: Example

[0024] like Figure 1-5 As shown, this utility model provides a foundation pit support structure, including a foundation pit support component 1. The foundation pit support component 1 includes a positioning support installation plate 2, a stacked support plate 3, and a stacked support plate 4 stacked from bottom to top.

[0025] The positioning support installation plate 2 is made of Q345B hot-rolled steel plate with a thickness of ≥16mm; the superimposed support plate is made of Q390 high-strength steel with a thickness of ≥12mm and hot-dip galvanized.

[0026] Both the first stacked support plate 3 and the second stacked support plate 4 have trapezoidal slots 11 on their tops. Both the first stacked support plate 3 and the second stacked support plate 4 have trapezoidal inserts 12 that are compatible with the trapezoidal slots 11 fixedly connected to their bottom surfaces. Both the first stacked support plate 3 and the second stacked support plate 4 have square slots 13 on their upper surfaces near both sides. Both the first stacked support plate 3 and the second stacked support plate 4 have square inserts 14 that are compatible with the square slots 13 fixedly connected to their bottom surfaces.

[0027] Both the first stacked support plate 3 and the second stacked support plate 4 have threaded mating holes 15 on their front sides that extend into the trapezoidal slot 11. Fastening bolts 16 are screwed into the inner walls of the threaded mating holes 15, and the tail end of the fastening bolts 16 threads through the trapezoidal insert 12. The back of the second stacked support plate 4 has an adjustable-height ground fixing assembly. Countersunk holes are made in the trapezoidal insert 12 at the positions corresponding to the fastening bolts 16, allowing the bolt tail end to be completely recessed into the insert, avoiding interference with the inner wall of the slot. The depth of the countersunk hole should be 1mm greater than the bolt head height to ensure a flat surface after installation. When the length of the stacked support plate exceeds 2m, a set of fastening bolts 16 is installed every 500mm along the length of the trapezoidal slot 11 to improve connection strength. Example

[0028] like Figure 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: preferably, the trapezoidal plug 12 is movably connected to the inner wall of the trapezoidal slot 11, and the square plug 14 is movably connected to the inner wall of the square slot 13.

[0029] The ground fixing component includes a grounding support plate 18. One end of the grounding support plate 18 is rotatably connected to a matching ring 7 via a connecting rotating seat 10. A positioning T-shaped plate 6 is slidably sleeved on the inner wall of the matching ring 7. The positioning T-shaped plate 6 is fixedly connected to the back of the superimposed support plate 4.

[0030] The outer wall of the positioning T-plate 6 has a positioning hole 8, and the inner wall of the positioning hole 8 is threaded with a positioning bolt 9 that passes through the movable fitting ring 7. The positioning bolt 9 can be a self-locking nut with a spring washer, or the bolt shank can be provided with anti-slip grooves to prevent loosening due to vibration.

[0031] A reinforcing anchor rod 17 is slidably inserted into the grounding support plate 18.

[0032] The bottom surface of the positioning support mounting plate 2 is fixedly connected to a fixing plate 5. The fixing plate 5 can adopt a triangular cross-section design with a serrated anti-slip structure at the bottom, forming a mechanical engagement when inserted into the ground.

[0033] The working principle of this foundation pit support structure will be explained in detail below.

[0034] like Figure 1-5 As shown, during use, depending on the depth of the foundation pit, an appropriate number of stacked support plates 1 3 and stacked support plates 2 can be selected and stacked with the positioning support installation plate 2 to increase the height of the foundation pit support component 1, thereby enabling it to move down and adapt as the excavation depth increases.

[0035] When the height of the foundation pit support assembly 1 needs to be increased, the square insert 14 at the bottom of the second stacked support plate 4 is inserted into the square slot 13 on the first stacked support plate 3 and moved downwards. As the second stacked support plate 4 moves downwards, the trapezoidal insert 12 is inserted into the trapezoidal slot 11. When the bottom surface of the second stacked support plate 4 contacts the top of the first stacked support plate 3, the trapezoidal insert 12 and the square insert 14 fit precisely with the inner walls of the trapezoidal slot 11 and the square slot 13. Then, the fastening bolt 16 is installed into the inner wall of the threaded mating hole 15 to fix the trapezoidal insert 12 to the first stacked support plate 3, thereby completing the fixing of the first stacked support plate 3 and the second stacked support plate 4. The height of the foundation pit support assembly 1 is also increased accordingly.

[0036] After the first stacked support plate 3 and the second stacked support plate 4 are stacked, the matching ring 7 can be pulled to move it to a suitable position on the outer wall of the positioning T-shaped plate 6. Then, the positioning bolt 9 is connected with the corresponding positioning hole 8 to complete the fixing of the positioning T-shaped plate 6 and the matching ring 7. It can then be fixed to the ground by the reinforcing anchor rod 17 on the grounding support plate 18, and finally the height adjustment of the foundation pit support component 1 is completed.

[0037] The number of fastening bolts 16 and threaded mating holes 15 can also be increased as needed.

[0038] The left and right sides of the superimposed support plate 3 are respectively provided with slots and blocks, which allow multiple sets of foundation pit support components 1 to be used side by side. The slots and blocks of the superimposed support plate 3 can adopt a mortise and tenon structure, and rubber sealing gaskets are set on the mating surfaces to ensure connection strength and prevent groundwater leakage.

[0039] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A foundation pit support structure, comprising a foundation pit support component (1), characterized in that: The foundation pit support assembly (1) includes a positioning support installation plate (2), a stacked support plate one (3), and a stacked support plate two (4) stacked from bottom to top. The top of the first (3) and the second (4) of the superimposed support plate are provided with trapezoidal slots (11), the bottom surfaces of the first (3) and the second (4) of the superimposed support plate are fixedly connected with trapezoidal inserts (12) that are compatible with the trapezoidal slots (11), the upper surfaces of the first (3) and the second (4) of the superimposed support plate are provided with square slots (13), and the bottom surfaces of the first (3) and the second (4) of the superimposed support plate are fixedly connected with square inserts (14) that are compatible with the square slots (13). Both the first (3) and the second (4) of the superimposed support plate are provided with threaded mating holes (15) that penetrate into the trapezoidal slot (11) on the front side. The inner wall of the threaded mating hole (15) is screwed with a fastening bolt (16). The tail end of the fastening bolt (16) is threaded through the trapezoidal insert (12). The second (4) of the superimposed support plate is provided with a ground fixing component with adjustable height on the back side.

2. The foundation pit support structure according to claim 1, characterized in that: The trapezoidal plug (12) is movably inserted into the inner wall of the trapezoidal slot (11), and the square plug (14) is movably inserted into the inner wall of the square slot (13).

3. The foundation pit support structure according to claim 1, characterized in that: The ground fixing assembly includes a grounding support plate (18), one end of which is rotatably connected to a matching ring (7) via a connecting rotating seat (10). A positioning T-shaped plate (6) is slidably sleeved on the inner wall of the matching ring (7), and the positioning T-shaped plate (6) is fixedly connected to the back of the superimposed support plate (4).

4. The foundation pit support structure according to claim 3, characterized in that: The outer wall of the positioning T-plate (6) is provided with a positioning hole (8), and the inner wall of the positioning hole (8) is threaded with a positioning bolt (9) that passes through the movable adapter ring (7).

5. The foundation pit support structure according to claim 3, characterized in that: A reinforcing anchor rod (17) is slidably inserted into the grounding support plate (18).

6. The foundation pit support structure according to claim 1, characterized in that: The bottom surface of the positioning support mounting plate (2) is fixedly connected to a fixing insert plate (5).

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