Soft soil area deep foundation pit supporting structure

Abstract

The utility model discloses a supporting structure for a deep foundation pit in a soft soil area, which relates to the technical field of supporting structures and comprises a drainage mechanism, an adjusting mechanism is fixedly connected to the bottom of the drainage mechanism, a base mechanism is arranged outside the adjusting mechanism, and the drainage mechanism comprises a fixing frame. The interior of the fixing frame is fixedly connected with a sponge mat and a filter screen, and the filter screen is located on the outer side of the sponge mat. The filter screen is attached to the inner wall of the foundation pit, the sponge mat absorbs rainwater, the filter screen blocks soil, then the phenomenon of water and soil loss on the inner wall of the foundation pit is avoided, then the rainwater enters the fixing frame along the sponge mat, the water pump is started to pump water in the fixing frame outwards, and due to the fact that the water absorption disc is attached to the sponge mat, the water absorption disc can absorb water. And meanwhile, water in the sponge mat can be sucked, so that the water content of the inner wall of the foundation pit is reduced, soil on the inner wall of the foundation pit is firmer, and the supporting strength of the inner wall of the foundation pit is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of support structures, in particular to a deep foundation pit support structure in soft soil areas. Background Technique

[0002] The support operation of deep foundation pits in soft soil areas is a major challenge in geotechnical engineering. Currently, the commonly used methods mainly include the internal support method, the diaphragm wall method, and the open caisson method. In the implementation process of the internal support method, various supports need to be set in the deep foundation pit, resulting in limited construction space and a certain degree of reduction in construction efficiency.

[0003] When the prior art supports the foundation pit, only a baffle is laid on the side of the foundation pit to block the soft soil. However, the fixing property of the baffle for the soft soil is poor, and it is extremely easy to be damaged under long-term exposure to the sun and rain erosion, thereby reducing the support strength for the foundation pit. Now, a deep foundation pit support structure in soft soil areas is proposed. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a deep foundation pit support structure in soft soil areas to solve the problems raised in the above background technique.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A deep foundation pit support structure in soft soil areas includes a drainage mechanism. The bottom of the drainage mechanism is fixedly connected with an adjustment mechanism, and a base mechanism is arranged outside the adjustment mechanism.

[0007] The drainage mechanism includes a fixing frame. A sponge pad and a filter screen are fixedly connected inside the fixing frame. The filter screen is located outside the sponge pad. The top of the fixing frame is fixedly connected with a support plate, and a water pump is arranged on the upper surface of the support plate.

[0008] A further improvement of the technical solution of the utility model is that one end of the water pump is fixedly connected with a water suction pipe, a water suction disc is threadedly connected to the water suction pipe, and the output end of the water pump is fixedly connected with a drain pipe. Starting the water pump can pump the water in the fixing frame into the water suction pipe and then discharge it outside the foundation pit through the drain pipe, thereby reducing the water content of the inner wall of the foundation pit and avoiding soil erosion.

[0009] A further improvement of the technical solution of the utility model is that the adjustment mechanism includes a T-shaped extension plate. The bottom of the fixing frame is fixedly connected to the upper surface of the T-shaped extension plate. Rack gears are symmetrically arranged on the T-shaped extension plate, and a first limiting rod is fixedly connected to the rack gear. The first limiting rod is located in a second limiting groove, so as to improve the stability of the rack gear when the rack gear moves.

[0010] A further improvement of the technical solution of the present utility model lies in that: the gear rack is meshed and connected with a gear, a second limiting rod is fixedly connected to the gear, a driving motor is arranged inside the second limiting rod, and when the gear rotates, the gear rack can be driven to move.

[0011] A further improvement of the technical solution of the present utility model lies in that: a support rod is hinged to the bottom of the T-shaped extension plate, and one end of the support rod is slidably connected with a fixed rod. When the T-shaped extension plate moves outwards, the support rod is driven to move inside the fixed rod, thereby improving the support strength for the T-shaped extension plate.

[0012] A further improvement of the technical solution of the present utility model lies in that: the base mechanism includes a bottom plate, a first limiting groove is opened inside the bottom plate, the T-shaped extension plate is slidably connected in the first limiting groove, and one end of the fixed rod is hinged to one side of the bottom plate. The T-shaped extension plate moves in the first limiting groove, thereby being able to limit the moving range of the T-shaped extension plate.

[0013] A further improvement of the technical solution of the present utility model lies in that: the second limiting rod is rotatably connected inside the bottom plate, a second limiting groove is opened inside the bottom plate, and the first limiting rod is slidably connected inside the second limiting groove. The second limiting groove fixes the position of the first limiting rod, thereby being able to fix the position of the gear rack.

[0014] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is:

[0015] 1. The present utility model provides a deep foundation pit support structure in soft soil areas. The filter screen is attached to the inner wall of the foundation pit, the sponge pad absorbs rainwater, the filter screen blocks soil, thereby avoiding the phenomenon of soil and water loss on the inner wall of the foundation pit. Subsequently, the rainwater flows into the fixed frame along the sponge pad, and the water pump is started to pump the water in the fixed frame outwards. And because the water absorption disc is attached to the sponge pad, the water in the sponge pad can be simultaneously absorbed, thereby reducing the water content of the inner wall of the foundation pit, making the soil on the inner wall of the foundation pit more firm, and thus improving the support strength for the inner wall of the foundation pit.

[0016] 2. The present utility model provides a deep foundation pit support structure in soft soil areas. After the support mechanism is placed in the foundation pit, the bottom plate is attached to the bottom of the foundation pit. Subsequently, the second limiting rod is started, and the driving motor inside it drives the second limiting rod to rotate, thereby driving the gear to rotate, then driving the gear rack and the first limiting rod to move along the second limiting groove, driving the T-shaped extension plate to move synchronously, and at the same time driving the fixed frame to move towards the inner wall of the foundation pit, being able to support foundation pits of different sizes, and thus expanding the applicable range of the support structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of the present utility model;

[0018] Figure 2 This is a schematic structural diagram of the cross-section of the drainage mechanism of the present utility model;

[0019] Figure 3 This is a schematic structural diagram of the adjustment mechanism of the present utility model;

[0020] Figure 4 This is a schematic structural diagram of the cross-section of the base mechanism of the present utility model.

[0021] In the figure: 1. Drainage mechanism; 11. Fixed frame; 12. Sponge pad; 13. Filter screen; 14. Support plate; 15. Water pump; 16. Suction pipe; 17. Suction disc; 18. Drain pipe; 2. Adjustment mechanism; 21. T-shaped extension plate; 22. Rack; 23. First limit rod; 24. Gear; 25. Second limit rod; 26. Support rod; 27. Fixed rod; 3. Base mechanism; 31. Bottom plate; 32. First limit groove; 33. Second limit groove. Detailed implementation manners

[0022] The following further elaborates on the present utility model in conjunction with embodiments:

[0023] Embodiment 1

[0024] As Figures 1-4 shown, the present utility model provides a deep foundation pit support structure in soft soil areas, including a drainage mechanism 1. The bottom of the drainage mechanism 1 is fixedly connected with an adjustment mechanism 2, and the outside of the adjustment mechanism 2 is provided with a base mechanism 3. The drainage mechanism 1 includes a fixed frame 11. Inside the fixed frame 11, a sponge pad 12 and a filter screen 13 are fixedly connected. The filter screen 13 is located outside the sponge pad 12. The top of the fixed frame 11 is fixedly connected with a support plate 14. On the upper surface of the support plate 14, a water pump 15 is arranged. One end of the water pump 15 is fixedly connected with a suction pipe 16. A suction disc 17 is threadedly connected to the suction pipe 16. The output end of the water pump 15 is fixedly connected with a drain pipe 18;

[0025] Specifically, the filter screen 13 is attached to the inner wall of the foundation pit to fix the soil on the inner wall. When rainwater enters the inner wall of the foundation pit, the sponge pad 12 absorbs the rainwater, and the filter screen 13 blocks the soil, thereby avoiding the phenomenon of soil erosion on the inner wall of the foundation pit. Subsequently, the rainwater flows into the inside of the fixed frame 11 along the sponge pad 12. The water pump 15 is started to pump the water in the fixed frame 11 into the suction pipe 16 and then discharged through the drain pipe 18. Since the suction disc 17 is attached to the sponge pad 12, the water in the sponge pad 12 can be simultaneously absorbed, thereby reducing the water content of the inner wall of the foundation pit and further improving the support strength of the inner wall of the foundation pit.

[0026] Embodiment 2

[0027] As Figures 1-4As shown, on the basis of Embodiment 1, the present utility model provides a technical solution: Preferably, the adjusting mechanism 2 includes a T-shaped extension plate 21. The bottom of the fixing frame 11 is fixedly connected to the upper surface of the T-shaped extension plate 21. Gear racks 22 are symmetrically arranged on the T-shaped extension plate 21. A first limiting rod 23 is fixedly connected to the gear rack 22. The gear rack 22 is meshed with a gear 24. A second limiting rod 25 is fixedly connected to the gear 24. A driving motor is arranged inside the second limiting rod 25. The bottom of the T-shaped extension plate 21 is hinged to a support rod 26. One end of the support rod 26 is slidably connected to a fixing rod 27;

[0028] Specifically, after the support mechanism is placed in the foundation pit, the bottom plate 31 is made to be in contact with the bottom of the foundation pit. Subsequently, the second limiting rod 25 is started. The driving motor inside it drives the second limiting rod 25 to rotate, thereby driving the gear 24 to rotate. Then, it drives the gear rack 22 and the first limiting rod 23 to move along the second limiting groove 33, driving the T-shaped extension plate 21 to move synchronously, and at the same time driving the fixing frame 11 to move towards the inner wall of the foundation pit, which can support foundation pits of different sizes, thereby expanding the applicable range of the support structure. Moreover, gear racks 22 are arranged both above and below the T-shaped extension plate 21, which can improve the stability of the movement of the T-shaped extension plate 21. When the T-shaped extension plate 21 moves, it drives the support rod 26 to slide inside the fixing rod 27, so that a triangle is formed among the support rod 26, the fixing rod 27, the T-shaped extension plate 21 and the bottom plate 31, improving the support strength for the T-shaped extension plate 21, and then improving the stability of the fixing frame 11, and further improving the fixing strength for the inner wall of the foundation pit.

[0029] Embodiment 3

[0030] As Figures 1-4 shown, on the basis of Embodiment 1, the present utility model provides a technical solution: Preferably, the base mechanism 3 includes a bottom plate 31. A first limiting groove 32 is opened inside the bottom plate 31. The T-shaped extension plate 21 is slidably connected inside the first limiting groove 32. One end of the fixing rod 27 is hinged to one side of the bottom plate 31. The second limiting rod 25 is rotatably connected inside the bottom plate 31. A second limiting groove 33 is opened inside the bottom plate 31. The first limiting rod 23 is slidably connected inside the second limiting groove 33;

[0031] Specifically, the T-shaped extension plate 21 moves inside the first limiting groove 32, which can limit the movement range of the T-shaped extension plate 21, thereby improving the stability of the support structure. At the same time, the second limiting groove 33 fixes the position of the first limiting rod 23, and then can fix the position of the gear rack 22, improving the stability when the gear rack 22 moves.

[0032] Next, the working principle of the deep foundation pit support structure in soft soil areas will be specifically described.

[0033] As Figures 1-4As shown, after the support mechanism is placed in the foundation pit, the bottom plate 31 is in contact with the bottom of the foundation pit, and the second limiting rod 25 is started to drive the gear 24 to rotate, which can drive the T-shaped extension plate 21 to move synchronously in the first limiting groove 32, and at the same time drive the fixing frame 11 to move toward the inner wall of the foundation pit. When one end of the T-shaped extension plate 21 moves along the first limiting groove 32 in the bottom plate 31, the other end drives the support rod 26 to slide in the fixing rod 27, so that the support rod 26, the fixing rod 27, the T-shaped extension plate 21 and the bottom plate 31 are A triangle is formed between them to improve the stability of the fixing frame 11. The filter screen 13 is in contact with the inner wall of the foundation pit. When rainwater enters the inner wall of the foundation pit, the sponge pad 12 absorbs the rainwater, and the filter screen 13 blocks the soil. The rainwater enters the fixing frame 11 along the sponge pad 12. The water pump 15 is started to pump the water in the fixing frame 11 into the suction pipe 16 and then pumped out through the drain pipe 18. Because the water absorption plate 17 is in contact with the sponge pad 12, the water in the sponge pad 12 can be absorbed at the same time, thereby improving the supporting strength of the foundation pit.

[0034] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A deep foundation pit support structure in soft soil area, including a drainage mechanism (1), characterized in that: The bottom of the drainage mechanism (1) is fixedly connected with an adjustment mechanism (2), and a base mechanism (3) is arranged outside the adjustment mechanism (2). The drainage mechanism (1) includes a fixing frame (11), a sponge pad (12) and a filter screen (13) are fixedly connected inside the fixing frame (11), the filter screen (13) is located outside the sponge pad (12), a support plate (14) is fixedly connected to the top of the fixing frame (11), and a water pump (15) is arranged on the upper surface of the support plate (14).

2. A deep foundation pit support structure in soft soil area according to claim 1, characterized in that: One end of the water pump (15) is fixedly connected with a water suction pipe (16), a suction disc (17) is threadedly connected to the water suction pipe (16), and the output end of the water pump (15) is fixedly connected with a drain pipe (18).

3. A deep foundation pit support structure in soft soil area according to claim 1, characterized in that: The adjustment mechanism (2) includes a T-shaped extension plate (21), the bottom of the fixing frame (11) is fixedly connected to the upper surface of the T-shaped extension plate (21), gear racks (22) are symmetrically arranged on the T-shaped extension plate (21), and a first limiting rod (23) is fixedly connected to the gear rack (22).

4. A deep foundation pit support structure in soft soil area according to claim 3, characterized in that: The gear rack (22) is meshed with a gear (24), a second limiting rod (25) is fixedly connected to the gear (24), and a driving motor is arranged inside the second limiting rod (25).

5. A deep foundation pit support structure in soft soil area according to claim 4, characterized in that: The bottom of the T-shaped extension plate (21) is hinged with a support rod (26), and one end of the support rod (26) is slidably connected with a fixed rod (27).

6. A deep foundation pit support structure in soft soil area according to claim 5, characterized in that: The base mechanism (3) includes a bottom plate (31), a first limiting groove (32) is opened inside the bottom plate (31), the T-shaped extension plate (21) is slidably connected in the first limiting groove (32), and one end of the fixed rod (27) is hinged to one side of the bottom plate (31).

7. A deep foundation pit support structure in soft soil area according to claim 6, characterized in that: The second limiting rod (25) is rotatably connected inside the bottom plate (31), a second limiting groove (33) is opened inside the bottom plate (31), and the first limiting rod (23) is slidably connected inside the second limiting groove (33).

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