Tunnel support pile section waterproof structure

Abstract

The utility model provides a tunnel support pile section waterproof structure which comprises a water storage tank, two lap joint plates used for being in lap joint with the top of a steel sheet pile are installed on the upper portion of one side face of the water storage tank, each lap joint plate is of an L-shaped structure, a clamping plate is installed at the end of the horizontal portion of each lap joint plate, and one side face of each clamping plate is in threaded connection with a clamping screw. A submersible pump is arranged in the water storage tank, a hanging rod is installed on the outer surface of the submersible pump, a plurality of pin holes are evenly formed in the outer surface of the hanging rod, a transverse plate is installed on the upper portion in the water storage tank, the upper end of the hanging rod penetrates through the transverse plate, and positioning pins connected with the transverse plate in an inserted mode are inserted into the pin holes. The structure has the advantages that water flowing into the foundation pit from the ground is gathered at one position and pumped away, the requirement for the lift of the submersible pump is lowered, and the ground water is prevented from freely crossing the steel sheet piles to flow into the foundation pit.

Description

Technical Field

[0001] This utility model relates to a waterproof structure for tunnel support pile sections, belonging to the field of tunnel construction technology. Background Technology

[0002] In tunnel construction, construction methods are mainly divided into two major systems: open-cut and cut-and-cover methods. When the tunnel is buried in shallow strata, the open-cut method is often preferred in engineering practice due to considerations of construction convenience and economy. When using the open-cut method, in order to ensure the stability of the pit sidewalls and control stratum deformation, it is usually necessary to implement a retaining structure. Among them, the steel sheet pile retaining system is widely used due to its advantages such as convenient construction and recyclable materials. This retaining structure forms a continuous water-stopping curtain by driving interconnected steel sheet piles into the stratum, and has the dual functions of support and water stoppage.

[0003] However, during actual construction, factors such as undulating terrain and rainfall can cause surface runoff to overflow the top elevation of the sheet piles, leading to backflow and water accumulation in the foundation pit. When the excavation depth is large, draining the accumulated water requires overcoming a significant still water lift height, and traditional drainage solutions typically rely on high-lift submersible pumps for forced drainage. Such equipment has significant drawbacks during operation: firstly, the pump's energy efficiency ratio decreases significantly under high-lift conditions, resulting in a substantial increase in energy costs; secondly, continuous high-load operation easily leads to equipment failure, affecting construction progress and increasing maintenance costs. Existing waterproofing systems for retaining structures have significant technical deficiencies in addressing surface runoff overflow issues. There is an urgent need to optimize the structural design to construct a tunnel support pile segment structure with highly efficient waterproofing performance, blocking the infiltration path of surface water into the foundation pit at the source and reducing the operational load on subsequent drainage systems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a waterproof structure for tunnel support piles to solve the problems mentioned in the background technology. This utility model realizes the collection and pumping away of water flowing from the ground into the foundation pit, reducing the head requirement of the submersible pump and preventing surface water from flowing into the foundation pit by crossing the steel sheet piles.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a waterproof structure for tunnel support pile sections, including a water storage tank. Two overlapping plates for overlapping the top of steel sheet piles are installed at the upper part of one side of the water storage tank. The overlapping plates are L-shaped. A clamping plate is installed at the horizontal end of the overlapping plate. A clamping screw is threaded to one side of the clamping plate. A submersible pump is installed inside the water storage tank. A lifting rod is installed on the outer surface of the submersible pump. Multiple pin holes are evenly opened on the outer surface of the lifting rod. A horizontal plate is installed at the upper part of the water storage tank. The upper end of the lifting rod passes through the horizontal plate. A positioning pin that is inserted into the pin hole and engages with the horizontal plate is installed in the pin hole.

[0006] Furthermore, a vertical hole is provided at the center of the upper surface of the horizontal plate, and a positioning sleeve is provided on the upper side of the vertical hole. The positioning sleeve is connected and fixed to the horizontal plate. The lifting rod passes through the channel formed by the vertical hole and the positioning sleeve. A through hole that matches the pin hole is provided on the outer surface of the positioning sleeve. One end of the positioning pin passes through the channel formed by the through hole and the pin hole. A handle is installed at the upper end of the lifting rod.

[0007] Furthermore, a U-shaped frame is installed on the upper part of the outer surface of the submersible pump, and a screw hole is machined on the upper surface of the horizontal part of the U-shaped frame. A threaded head is installed at the lower end of the boom, and the threaded head is threaded into the screw hole.

[0008] Furthermore, water inlets are provided at the upper positions of the two parallel sides of the water storage tank, and the cross-section of the water storage tank is rectangular.

[0009] Furthermore, a rectangular groove is provided on the side of the clamping plate facing the water storage tank, and a rectangular block is inserted in the rectangular groove. A threaded hole is provided on one side of the rectangular block, and the clamping screw is threaded into the threaded hole. Two insertion holes are provided on the upper surface of the rectangular block, and two round holes that mate with the insertion holes are provided on the upper surface of the clamping plate. The round holes communicate with the rectangular groove, and a positioning rod is inserted in the channel formed by the round holes and the insertion holes.

[0010] Furthermore, a plurality of connecting plates are provided between the two overlapping plates, and the two ends of the connecting plates are respectively connected and fixed to the overlapping plates, and the connecting plates are connected and fixed to the water storage tank.

[0011] Furthermore, a base plate strip is fixedly connected to the lower part of both ends of the water storage tank. The lower surface of the base plate strip is recessed upward to form two blind holes. A stud is inserted into the blind hole. A straight threaded cylinder is threadedly connected to the lower end of the stud. A base is fixedly connected to the lower end of the straight threaded cylinder.

[0012] The beneficial effects of this utility model are:

[0013] 1. A structure formed by clamping screws, clamping plates, and overlapping plates connects the water storage tank to the top of the sheet piles, thus supporting the water storage tank with the sheet piles. The water storage tank is then placed in a pit outside the sheet piles. A drainage ditch is excavated around the sheet piles to allow water to flow into the water storage tank. Groundwater first flows into the water storage tank. After the submersible pump is activated, it pumps the water out of the tank, thus collecting and pumping away the water flowing from the ground into the pit. This reduces the head requirement of the submersible pump and prevents surface water from flowing freely over the sheet piles into the pit, effectively waterproofing the sheet pile support section.

[0014] 2. Use the positioning rod to confine the rectangular block within the rectangular groove of the clamping plate, thus assembling the rectangular block and the clamping plate. This allows the clamping screw to be threaded into the threaded hole, completing the assembly of the clamping screw and the clamping plate. When the clamping screw cannot be easily removed from the threaded hole due to corrosion, pull out the positioning rod to facilitate the separation of the rectangular block and the clamping screw from the clamping plate. This allows the structure formed by the clamping plate and the overlapping plate to be easily removed from the sheet pile.

[0015] 3. When silt settles at the bottom of the water storage tank, adjust the position of the boom upward so that the submersible pump is above the silt layer. Then, use the positioning pin to limit the relative position of the boom and the horizontal plate, which helps to reduce the frequency of cleaning the silt in the water storage tank. At the same time, the design of the horizontal plate improves the structural strength of the water storage tank and helps to reduce the wall thickness of the water storage tank. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0017] Figure 1 This is a structural schematic diagram of a waterproof structure for a tunnel support pile section according to the present invention;

[0018] Figure 2 This is another perspective view of a waterproof structure for tunnel support pile sections according to this utility model;

[0019] Figure 3 This is a schematic diagram of the assembly of the bottom plate strip and the water storage tank in a waterproof structure for tunnel support pile sections according to this utility model.

[0020] Figure 4 This is a schematic diagram of the assembly of the hanger, cross plate and submersible pump in a waterproof structure for tunnel support pile sections according to this utility model.

[0021] Figure 5 This is an assembly diagram of the rectangular block, clamping screw, clamping plate and overlapping plate in a waterproof structure for tunnel support pile section according to this utility model.

[0022] In the diagram: 1-Water storage tank, 2-Submersible pump, 3-Base plate strip, 4-Straight threaded cylinder, 5-Base, 6-Stud, 7-Inlet, 8-Clamping plate, 9-Clamping screw, 10-Overlap plate, 11-Horizontal plate, 12-Hanging rod, 13-Connecting plate, 14-Blind hole, 15-Positioning pin, 16-Positioning sleeve, 17-Pin hole, 18-U-shaped frame, 19-Positioning rod, 20-Round hole, 21-Insertion hole, 22-Threaded hole, 23-Rectangular block, 24-Rectangular groove. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] Please see Figure 1 , Figure 2 and Figure 5 This utility model provides a technical solution: a waterproof structure for tunnel support pile sections, including a water storage tank 1. Two overlapping plates 10, for overlapping the top of steel sheet piles, are installed on the upper part of one side of the rectangular water storage tank 1. The overlapping plates 10 have an L-shaped structure. A clamping plate 8 is installed at the horizontal end of the overlapping plate 10. A clamping screw 9 is threaded onto one side of the clamping plate 8. A submersible pump 2 is installed inside the water storage tank 1. Water inlets 7 are opened at the upper part of the two parallel sides of the water storage tank 1. The structure formed by the clamping screw 9, the clamping plate 8, and the overlapping plates 10 allows water to be stored... The trench 1 is connected to the top of the sheet piles, thus supporting the water storage trench 1 with the sheet piles. The water storage trench 1 is then placed in the pit outside the sheet piles. A water diversion ditch is then excavated around the sheet piles to flow into the water storage trench 1. As a result, the surface water first flows into the water storage trench 1. After the submersible pump 2 is run, it pumps away the water in the water storage trench 1, thus collecting the water flowing from the surface into the foundation pit and pumping it away. This reduces the head requirement of the submersible pump 2 and prevents surface water from flowing into the foundation pit by crossing the sheet piles, thereby playing a role in waterproofing the sheet pile support section.

[0025] See Figure 1 , Figure 2 and Figure 5 Multiple connecting plates 13 are provided between the two overlapping plates 10. The two ends of the connecting plates 13 are respectively connected and fixed to the overlapping plates 10, so that the connecting plates 13 are connected and fixed to the water storage tank 1, improving the stability of the connection between the overlapping plates 10 and the water storage tank 1. A rectangular groove 24 is opened on the side of the clamping plate 8 facing the water storage tank 1. A rectangular block 23 is inserted into the rectangular groove 24. A threaded hole 22 is opened on one side of the rectangular block 23. The clamping screw 9 is threaded into the threaded hole 22. Two insertion holes 21 are opened on the upper surface of the rectangular block 23. Two round holes 20 that mate with the insertion holes 21 are opened on the upper surface of the clamping plate 8. The rectangular block 23 is connected to the rectangular groove 24. A positioning rod 19 is inserted into the channel formed by the round hole 20 and the insertion hole 21. The positioning rod 19 is used to restrict the rectangular block 23 in the rectangular groove 24 of the clamping plate 8, so as to realize the assembly of the rectangular block 23 and the clamping plate 8. The clamping screw 9 is threaded into the threaded hole 22, thus completing the assembly of the clamping screw 9 and the clamping plate 8. When the clamping screw 9 cannot be easily removed from the threaded hole 22 due to corrosion, the positioning rod 19 is pulled out, so that the rectangular block 23 and the clamping screw 9 can be separated from the clamping plate 8 together, and the structure formed by the clamping plate 8 and the overlapping plate 10 can be easily removed from the steel sheet pile.

[0026] See Figure 1 , Figure 2 and Figure 4A U-shaped frame 18 is installed on the upper part of the outer surface of the submersible pump 2. A screw hole is machined on the upper surface of the horizontal part of the U-shaped frame 18. A threaded head is installed at the lower end of the lifting rod 12, allowing the threaded head to be threaded into the screw hole for easy separation of the lifting rod 12 from the U-shaped frame 18. A handle is installed at the upper end of the lifting rod 12. Multiple pin holes 17 are evenly distributed on the outer surface of the lifting rod 12. A horizontal plate 11 is installed at the upper part of the water storage tank 1. The upper end of the lifting rod 12 passes through the horizontal plate 11. A positioning pin 15 is inserted into the pin hole 17 to engage with the horizontal plate 11. A vertical hole is opened in the middle of the upper surface of the horizontal plate 11, and a positioning sleeve 16 is provided on the upper side of the vertical hole for positioning... The sleeve 16 is connected and fixed to the horizontal plate 11. The rod 12 passes through the channel formed by the vertical hole and the positioning sleeve 16. The outer surface of the positioning sleeve 16 has a through hole that matches the pin hole 17. One end of the positioning pin 15 passes through the channel formed by the through hole and the pin hole 17. When silt settles at the bottom of the water storage tank 1, the position of the rod 12 is adjusted upward so that the submersible pump 2 is on the upper side of the silt layer. Then, the positioning pin 15 is used to limit the relative position of the rod 12 and the horizontal plate 11, which helps to reduce the frequency of cleaning the silt in the water storage tank 1. At the same time, the design of the horizontal plate 11 improves the structural strength of the water storage tank 1 and helps to reduce the wall thickness of the water storage tank 1.

[0027] See Figures 1-3 Both ends of the water storage tank 1 are connected and fixed with bottom plate strips 3. The lower surface of the bottom plate strip 3 is recessed upward to form two blind holes 14. Studs 6 are inserted into the blind holes 14. The lower end of the studs 6 is threaded to a straight threaded cylinder 4. The lower end of the straight threaded cylinder 4 is connected and fixed to a base 5. The length of the studs 6 in the straight threaded cylinder 4 can be adjusted to adjust the distance between the base 5 and the bottom plate strip 3 as needed. Thus, the structure formed by the bottom plate strip 3, studs 6, straight threaded cylinder 4 and base 5 supports the water storage tank 1 and improves the stability of the water storage tank 1.

[0028] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A waterproof structure for tunnel support pile sections, comprising a water storage tank (1), characterized in that: Two overlapping plates (10) for overlapping the top of the steel sheet pile are installed on the upper part of one side of the water storage tank (1). The overlapping plate (10) is L-shaped. A clamping plate (8) is installed at the horizontal end of the overlapping plate (10). A clamping screw (9) is threaded on one side of the clamping plate (8). A submersible pump (2) is installed in the water storage tank (1). A lifting rod (12) is installed on the outer surface of the submersible pump (2). Multiple pin holes (17) are evenly opened on the outer surface of the lifting rod (12). A horizontal plate (11) is installed in the upper part of the water storage tank (1). The upper end of the lifting rod (12) passes through the horizontal plate (11). A positioning pin (15) that is inserted into the pin hole (17) and is connected to the horizontal plate (11).

2. The waterproof structure for tunnel support pile sections according to claim 1, characterized in that: A vertical hole is provided in the middle of the upper surface of the horizontal plate (11). A positioning sleeve (16) is provided on the upper side of the vertical hole. The positioning sleeve (16) is connected and fixed to the horizontal plate (11). The lifting rod (12) passes through the channel formed by the vertical hole and the positioning sleeve (16). A through hole is provided on the outer surface of the positioning sleeve (16) to cooperate with the pin hole (17). One end of the positioning pin (15) passes through the channel formed by the through hole and the pin hole (17). A handle is installed on the upper end of the lifting rod (12).

3. The waterproof structure for tunnel support pile sections according to claim 2, characterized in that: A U-shaped frame (18) is installed on the upper part of the outer surface of the submersible pump (2). A screw hole is machined on the upper surface of the horizontal part of the U-shaped frame (18). A threaded head is installed at the lower end of the rod (12). The threaded head is threaded into the screw hole.

4. The waterproof structure for tunnel support pile sections according to claim 3, characterized in that: The water storage tank (1) has water inlets (7) on the upper part of its two parallel sides, and the cross-section of the water storage tank (1) is rectangular.

5. The waterproof structure for tunnel support pile sections according to claim 4, characterized in that: The clamping plate (8) has a rectangular groove (24) on the side facing the water storage tank (1). A rectangular block (23) is inserted in the rectangular groove (24). A threaded hole (22) is opened on one side of the rectangular block (23). The clamping screw (9) is threaded into the threaded hole (22). Two insertion holes (21) are opened on the upper surface of the rectangular block (23). Two round holes (20) that cooperate with the insertion holes (21) are opened on the upper surface of the clamping plate (8). The round holes (20) communicate with the rectangular groove (24). A positioning rod (19) is inserted in the channel formed by the round holes (20) and the insertion holes (21).

6. The waterproof structure for tunnel support pile sections according to claim 5, characterized in that: Multiple connecting plates (13) are provided between the two overlapping plates (10). The two ends of the connecting plates (13) are respectively connected and fixed to the overlapping plates (10), and the connecting plates (13) are connected and fixed to the water storage tank (1).

7. A waterproof structure for tunnel support pile sections according to claim 6, characterized in that: The bottom plate strip (3) is fixedly connected to both ends of the water storage tank (1). The bottom plate strip (3) has two blind holes (14) formed by the downward indentation on the lower surface. A stud (6) is inserted into the blind hole (14). A straight threaded cylinder (4) is threadedly connected to the lower end of the stud (6). A base (5) is fixedly connected to the lower end of the straight threaded cylinder (4).

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