Foundation pit supporting device with drainage structure

Abstract

The foundation pit supporting device with the drainage structure comprises a supporting plate, positioning piles are arranged on the two sides of the supporting plate, a detachable anchor rod assembly is further arranged on one side of the supporting plate, a plurality of supporting assemblies are arranged above the supporting plate, each positioning pile comprises a pile column, a sharp part is arranged at the bottom end of the pile column, a water pumping hole is formed in the pile column, and a drainage hole is formed in the bottom end of the pile column. A plurality of side water inlet holes are formed in the outward side of the supporting plate, a filter screen is arranged in an interlayer of the supporting plate, a communicating pipeline is arranged in the supporting plate, the communicating pipeline is communicated with the water pumping hole, and the problem of foundation pit collapse caused by foundation pit water seepage in river channel foundation pit construction is solved.

Description

Technical Field

[0001] The utility model relates to the field of foundation pit construction, in particular to a foundation pit supporting device with a drainage structure. Background Art

[0002] In construction projects, foundation pit support is one of the important measures to ensure construction safety, prevent slope instability and protect the surrounding environment. Although traditional foundation pit support methods such as pile rows and underground continuous walls can effectively maintain the stability of the foundation pit, in areas with high groundwater levels or strong soil permeability, additional drainage systems are often required to reduce water pressure, thereby reducing the pressure on the support structure and improving its safety. Many existing foundation pit support devices are usually designed separately from the drainage system, and drainage channels must be dug at the bottom of the foundation pit, which not only increases project costs but also makes the maintenance of the entire system more complicated.

[0003] Therefore, a foundation pit support device with a drainage structure is needed, which can reduce the problem of foundation pit collapse caused by foundation pit seepage during river channel foundation pit construction. On the premise of ensuring the stability of the foundation pit, it can effectively lower the groundwater level and reduce the lateral pressure of the soil, thereby improving construction efficiency and safety. Utility Model Content

[0004] The main purpose of the utility model is to provide a foundation pit supporting device with a drainage structure, which solves the problem of foundation pit collapse caused by water seepage in the river channel foundation pit construction.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a foundation pit support device with a drainage structure, including a support plate, positioning piles are provided on both sides of the support plate, a detachable anchor rod assembly is also provided on one side of the support plate, and multiple support assemblies are provided above the support plate;

[0006] The positioning pile includes a pile column, the bottom end of the pile column is provided with a sharp portion, and the interior of the pile column is provided with a water pumping hole;

[0007] A plurality of side water inlet holes are provided on the outward side of the support plate, a filter screen is provided in the interlayer of the support plate, and a connecting pipe is provided inside the support plate, which is connected to the water pumping hole.

[0008] In the preferred embodiment, a sloped portion is further provided below the support plate, and a plurality of sloped water inlet holes are provided on the sloped portion, and the sloped water inlet holes are connected to the connecting pipe.

[0009] In a preferred embodiment, a water flow plate is provided above the communicating pipe, and a plurality of water flow holes are provided on the water flow plate. The water flow holes are used to guide the water flow entering from the side water inlet hole into the communicating pipe.

[0010] In the preferred embodiment, a limiting groove is further provided on the top of the support plate, one side of the support assembly is arranged in the limiting groove, a limiting boss is provided at the bottom of the limiting groove, and a plurality of air holes are provided on the limiting boss.

[0011] In the preferred embodiment, the support assembly includes a guide sleeve, a guide groove is provided inside the guide sleeve, a retractable telescopic plate is provided in the guide groove, a threaded rod is provided at one end of the telescopic plate, the threaded rod is threadedly connected to the guide sleeve, and rotating the threaded rod can control the movement of the telescopic plate.

[0012] In a preferred embodiment, the anchor rod assembly includes a guide rod, a tensioning portion is provided at the front end of the guide rod, a tunneling portion is provided at the top end of the tensioning portion, and a plurality of threads are further provided on the outer circle of the tensioning portion.

[0013] In the preferred embodiment, the interior of the guide rod is a hollow pipe, and a retracting rod is provided inside the guide rod;

[0014] The outer circle of the tensioning part is also provided with a plurality of ratchet holes, in which movable ratchets are provided. The tail ends of the movable ratchets are hinged to the retracting rod, and the outward end of the movable ratchets is provided with a pointed head. The movable ratchets are also provided with long holes, which are slidably connected with the pins in the ratchet holes.

[0015] Pulling the retracting rod can cause the movable ratchet to open outwards, thereby increasing the adhesion between the tensioning part and the soil.

[0016] This utility model provides a foundation pit support device with a drainage structure, which has the following beneficial effects: It effectively integrates support and drainage functions, significantly reducing the pressure of the groundwater level on the side walls of the foundation pit and improving overall stability. Through a built-in filter and connecting pipe system, seepage water can be quickly drained, reducing water accumulation at the bottom of the foundation pit and avoiding the risk of collapse caused by water seepage. This integrated design also simplifies the construction process, reduces project costs, and facilitates subsequent maintenance, greatly improving construction safety and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 It is an axonometric view of the support device of the utility model;

[0019] Figure 2 It is a schematic diagram of the supporting device of the utility model supporting the foundation pit;

[0020] Figure 3 It is a sectional isometric view of the support plate of the utility model;

[0021] Figure 4 It is a cross-sectional view of the support plate of the utility model;

[0022] Figure 5It is a cross-sectional view of the anchor rod assembly of the utility model;

[0023] Figure 6 It is a partial view of the anchor rod assembly of the utility model;

[0024] Figure 7 It is a cross-sectional view of the support assembly of the utility model.

[0025] In the figure: positioning pile 1; pile column 101; pumping hole 102; sharp part 103; supporting plate 2; side water inlet hole 201; inclined part 202; inclined water inlet hole 203; limiting groove 204; limiting boss 205; water pass plate 206; connecting pipe 207; water pass hole 208; air pass hole 209; anchor rod assembly 3; guide rod 301; tensioning part 302; excavation part 303; tightening hole 304; thread 305; ratchet hole 306; pulling rod 307; movable ratchet 308; support assembly 4; guide sleeve 401; telescopic plate 402; positioning plate 403; limiting hole 404; guide groove 405; threaded rod 406. DETAILED DESCRIPTION

[0026] Example 1

[0027] like Figure 1-7 As shown, a foundation pit support device with a drainage structure includes a support plate 2, positioning piles 1 are provided on both sides of the support plate 2, a detachable anchor rod assembly 3 is also provided on one side of the support plate 2, and multiple support assemblies 4 are provided above the support plate 2;

[0028] The positioning pile 1 includes a pile column 101, a sharp portion 103 is provided at the bottom end of the pile column 101, and a water extraction hole 102 is provided inside the pile column 101;

[0029] A plurality of side water inlet holes 201 are provided on the outward side of the support plate 2 , a filter screen is provided in the interlayer of the support plate 2 , and a connecting pipe 207 is provided inside the support plate 2 , which is connected to the water pumping hole 102 .

[0030] In a preferred embodiment, a slanted portion 202 is further provided below the support plate 2 , and a plurality of slanted water inlet holes 203 are provided on the slanted portion 202 . The slanted water inlet holes 203 are connected to the connecting pipe 207 .

[0031] In the preferred embodiment, a water flow plate 206 is provided above the communicating pipe 207 , and a plurality of water flow holes 208 are provided on the water flow plate 206 . The water flow holes 208 are used to guide the water flow entering from the side water inlet 201 into the communicating pipe 207 .

[0032] In the preferred embodiment, a limiting groove 204 is further provided on the top of the support plate 2, one side of the support assembly 4 is arranged in the limiting groove 204, a limiting boss 205 is provided at the bottom of the limiting groove 204, and a plurality of air holes 209 are provided on the limiting boss 205.

[0033] In the preferred embodiment, the support assembly 4 includes a guide sleeve 401, a guide groove 405 is provided inside the guide sleeve 401, a retractable telescopic plate 402 is provided in the guide groove 405, and a threaded rod 406 is provided at one end of the telescopic plate 402. The threaded rod 406 is threadedly connected to the guide sleeve 401, and rotating the threaded rod 406 can control the movement of the telescopic plate 402.

[0034] In a preferred embodiment, the anchor rod assembly 3 includes a guide rod 301 , a tensioning portion 302 is provided at the front end of the guide rod 301 , a tunneling portion 303 is provided at the top end of the tensioning portion 302 , and a plurality of threads 305 are further provided on the outer circle of the tensioning portion 302 .

[0035] In the preferred embodiment, the interior of the guide rod 301 is a hollow tube, and a retracting rod 307 is provided inside the guide rod 301;

[0036] The outer circle of the tensioning portion 302 is further provided with a plurality of ratchet holes 306, in which movable ratchets 308 are provided. The tail ends of the movable ratchets 308 are hinged to the retracting rod 307, and the outward ends of the movable ratchets 308 are provided with pointed heads. The movable ratchets 308 are further provided with long holes, which are slidably connected to the pins in the ratchet holes 306;

[0037] Pulling the retracting rod 307 can cause the movable ratchet 308 to open outward, thereby increasing the adhesion between the tensioning portion 302 and the soil.

[0038] A specific method of using a foundation pit support device with a drainage structure is as follows: the support device is rammed and inserted into the bottom of the foundation pit on both sides of the river channel foundation pit, the support assembly 4 is adjusted to a certain length and inserted into the limit groove 204 on the top of the support plate 2, and connected to the limit boss 205 by bolts, and then a hole is drilled through the hole on the support plate 2, the outer diameter of the hole is slightly smaller than the outer diameter of the guide rod 301, and then the anchor rod assembly 3 is inserted into the hole, the tail end is connected to the rotating device, and the excavation part 303 is used to expand the hole. After the guide rod 301 is inserted into the specified position, the tension rod 307 is tightened to make the movable ratchet 308 obliquely inserted into the soil to complete the anchoring;

[0039] Then rotate the threaded rod 406 to slightly tighten the support plate 2 to complete the support work of the support plate 2, and then connect the water pipe of the water pump to the pumping hole 102. The water on the outside of the support plate 2 will eventually flow into the connecting pipe 207 through the side water inlet hole 201. The water in the foundation pit will seep into the connecting pipe 207 through the inclined water inlet hole 203. The water in the connecting pipe 207 will eventually be pumped out from the pumping hole 102 by the water pump. Each section can complete the dewatering work of the foundation pit.

[0040] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be the technical solutions set forth in the claims, including equivalent alternatives to the technical features of the technical solutions set forth in the claims. Equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A foundation pit support device with a drainage structure, characterized by: It comprises a support plate (2), positioning piles (1) are provided on both sides of the support plate (2), a detachable anchor rod assembly (3) is also provided on one side of the support plate (2), and a plurality of support assemblies (4) are provided above the support plate (2); The positioning pile (1) comprises a pile column (101), a sharp portion (103) is provided at the bottom end of the pile column (101), and a water pumping hole (102) is provided inside the pile column (101); A plurality of side water inlet holes (201) are provided on the outward side of the support plate (2), a filter screen is provided in the interlayer of the support plate (2), and a connecting pipe (207) is provided inside the support plate (2), and the connecting pipe (207) is connected to the water pumping hole (102).

2. The foundation pit support device with a drainage structure according to claim 1, characterized in that: A slanted portion (202) is further provided below the support plate (2). A plurality of slanted water inlet holes (203) are provided on the slanted portion (202). The slanted water inlet holes (203) are connected to the communication pipe (207).

3. The foundation pit support device with a drainage structure according to claim 1, characterized in that: A water flow plate (206) is provided above the communication pipe (207), and a plurality of water flow holes (208) are provided on the water flow plate (206). The water flow holes (208) are used to guide the water flow entering through the side water inlet hole (201) into the communication pipe (207).

4. The foundation pit support device with a drainage structure according to claim 1, characterized in that: A limiting groove (204) is further provided at the top of the support plate (2), one side of the support assembly (4) is arranged in the limiting groove (204), a limiting boss (205) is provided at the bottom of the limiting groove (204), and a plurality of air holes (209) are provided on the limiting boss (205).

5. The foundation pit support device with a drainage structure according to claim 1, characterized in that: The support assembly (4) includes a guide sleeve (401), a guide groove (405) is provided inside the guide sleeve (401), a retractable telescopic plate (402) is provided in the guide groove (405), a threaded rod (406) is provided at one end of the telescopic plate (402), and the threaded rod (406) is threadedly connected to the guide sleeve (401), and the movement of the telescopic plate (402) can be controlled by rotating the threaded rod (406).

6. The foundation pit support device with a drainage structure according to claim 1, characterized in that: The anchor rod assembly (3) comprises a guide rod (301), a tensioning portion (302) is provided at the front end of the guide rod (301), a tunneling portion (303) is provided at the top end of the tensioning portion (302), and a plurality of threads (305) are further provided on the outer circle of the tensioning portion (302).

7. The foundation pit support device with a drainage structure according to claim 6, characterized in that: The interior of the guide rod (301) is a hollow pipe, and a retracting rod (307) is provided inside the guide rod (301); The outer circle of the tensioning portion (302) is further provided with a plurality of ratchet holes (306), and a movable ratchet (308) is provided in the ratchet hole (306). The tail end of the movable ratchet (308) is hinged to the retracting rod (307), and a pointed head is provided at the outward end of the movable ratchet (308). The movable ratchet (308) is further provided with a long hole, and the long hole is slidably connected to the pin in the ratchet hole (306); Pulling the retracting rod (307) can cause the movable ratchet (308) to open outward, thereby increasing the adhesion between the tensioning portion (302) and the soil.

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