Steel sheet pile with waterproof connecting locking opening
By using bottom-sealed round steel pipes and T-shaped components at the connection points of Larssen sheet piles, combined with grouting pipes and limiting blocks, a waterproof connection lock is formed, solving the water seepage problem at the connection points of sheet piles and achieving efficient waterproofing and applicability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-03-24
AI Technical Summary
The connection points of Larssen sheet piles are prone to water seepage, and existing technologies are insufficient to effectively prevent groundwater leakage.
A waterproof connection lock structure is formed by using a bottom-sealed round steel pipe and a T-shaped component set in the opposite direction, combined with a grouting pipe and a limiting block. Waterproof assembly of the steel sheet pile is achieved by injecting waterproof material.
It effectively prevents water seepage, improves the waterproof performance of the steel sheet pile connection, is suitable for environments with narrow spaces, and simplifies the process of injecting waterproof materials.
Smart Images

Figure CN224031647U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engineering construction, and specifically refers to a steel sheet pile with a waterproof connecting lock. Background Technology
[0002] Larssen sheet piles are a type of support structure widely used in civil engineering. They are made of hot-rolled steel plates and are typically U-shaped, possessing certain strength and rigidity. Multiple Larssen sheet piles are tightly connected at both ends using U-shaped interlocking joints to form a continuous retaining wall.
[0003] Although the U-shaped interlock at the end of Larssen sheet piles can effectively connect multiple Larssen sheet piles, it is often a weak point where groundwater seepage occurs, and the connection point is prone to water seepage. Utility Model Content
[0004] The purpose of this utility model is to overcome the defects of the prior art and provide a steel sheet pile with a waterproof connection lock, which solves the problem that the waterproofing of the connection part of the steel sheet pile is weak and prone to water seepage in the prior art.
[0005] To achieve the above objectives, this utility model provides a sheet pile with a waterproof connecting lock for splicing together to form a sheet pile support. The sheet pile includes a sheet pile body and round steel pipes and T-shaped components respectively connected to both ends of the sheet pile body, and the round steel pipes and the T-shaped components are arranged in opposite directions.
[0006] The bottom of the round steel pipe is sealed, and an opening that mates with the T-shaped component is provided on the side of the round steel pipe facing away from the T-shaped component;
[0007] During the construction of sheet pile support, after the first sheet pile body is driven into the soil, during the driving process of the second sheet pile body, the T-shaped member at its end is inserted from top to bottom into the round steel pipe on the first sheet pile body, and waterproof material is injected into the gap formed by the connection between the two to achieve a waterproof connection between the two adjacent sheet pile bodies.
[0008] By adopting this technical solution, the two ends of the sheet pile body are respectively modified into a round steel pipe with a sealed bottom and a T-shaped component. The sealed bottom of the round steel pipe can prevent soil from entering the soil when the sheet pile body is driven into the ground. In addition to cooperating with the T-shaped component on the next sheet pile body to complete the assembly, it also reduces the soil in the gap between the T-shaped component and the round steel pipe, which facilitates the injection of waterproof material to form a waterproof assembly structure as a whole, thus solving the problem of weak waterproofing at the connection of the sheet pile. The round steel pipe and the T-shaped component are set in opposite directions, which can remove the limitation of setting them one by one in the forward and reverse directions when connecting the sheet pile bodies. It can be used in narrow spaces, increasing its applicability.
[0009] Furthermore, a sealing plate is connected to the bottom of the round steel pipe, and the bottom of the round steel pipe is sealed by the sealing plate.
[0010] By adopting this technical solution, a sealing plate is used to seal the bottom of the circular steel pipe, thereby preventing the sheet pile body from directly contacting the soil when it is driven into the ground.
[0011] Furthermore, a grouting pipe is connected to the side of the T-shaped component facing away from the round steel pipe, and the bottom height of the grouting pipe is greater than the bottom height of the T-shaped component.
[0012] By adopting this technical solution, the grouting pipe and the T-shaped component are integrated, eliminating the need for subsequent grouting pipe insertion. It also ensures that the waterproof material injected by the grouting pipe can fill the gap formed between the round steel pipe and the T-shaped component during the assembly of adjacent sheet pile bodies, avoiding the problem of the bottom of the grouting pipe being blocked by the bottom of the round steel pipe.
[0013] Furthermore, the grouting pipe is provided with overflow holes evenly distributed along its height direction.
[0014] By adopting this technical solution, the efficiency and uniformity of injecting waterproof material into the gap formed by the grouting pipe into the round steel pipe and T-shaped component can be increased, and the problem of not being able to inject waterproof material due to the bottom of the grouting pipe being blocked can be avoided.
[0015] Furthermore, a limiting block is connected to the side of the T-shaped member near the body of the sheet pile, and the width of the limiting block is greater than the width of the opening on the circular steel pipe;
[0016] The gap formed between the limiting block and the end of the T-shaped component that is connected to the steel sheet pile body in the opposite direction is greater than the wall thickness of the round steel pipe.
[0017] By adopting this technical solution, the limiting block and T-shaped component are distributed on the inner and outer sides of the round steel pipe, which can increase the fit between the T-shaped component and the round steel pipe, better exert the corresponding waterproof effect, and at the same time avoid the problem of large displacement between adjacent steel sheet pile bodies.
[0018] Compared with the prior art, this utility model has the following advantages:
[0019] 1. The two ends of the sheet pile body are modified to be a round steel pipe with a sealed bottom and a T-shaped component, respectively. The sealed bottom of the round steel pipe can prevent the soil from entering the sheet pile body. In addition to cooperating with the T-shaped component on the next sheet pile body to complete the assembly, it also reduces the soil in the gap between the T-shaped component and the round steel pipe, which facilitates the injection of waterproof material to form a waterproof assembly structure as a whole, thus solving the problem of weak waterproofing at the connection part of the sheet pile.
[0020] 2. The grouting pipe and T-shaped component are set up as a whole. In addition to eliminating the need for subsequent grouting pipe installation, it can also restrict the position of the T-shaped component inside the round steel pipe to ensure that sufficient injection gap is formed. Then, waterproof material is injected to achieve the waterproof splicing effect of adjacent steel sheet pile bodies.
[0021] 3. The reverse arrangement of the round steel pipe and T-shaped components can remove the limitation of connecting the existing steel sheet pile body by setting them one by one in the forward and reverse directions, which can be used in narrow spaces and increases applicability. Attached Figure Description
[0022] Figure 1 This is a top view schematic diagram of the steel sheet pile with waterproof connecting lock of this utility model;
[0023] Figure 2 This is a schematic diagram of the splicing of steel sheet piles with waterproof connecting locks according to this utility model;
[0024] Figure 3 This is an enlarged schematic diagram of the splicing position structure of the steel sheet pile with waterproof connecting lock during splicing according to this utility model.
[0025] Explanation of reference numerals in the attached drawings: 1. Sheet pile body; 2. Circular steel pipe; 3. T-shaped component; 4. Grouting pipe; 5. Limiting block; 6. Bottom sealing plate. Detailed Implementation
[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0027] Please see the appendix Figure 1-3 This utility model provides a sheet pile with a waterproof connecting lock for splicing together to form a sheet pile support. The sheet pile includes a sheet pile body 1 and a round steel pipe 2 and a T-shaped component 3 respectively connected to both ends of the sheet pile body 1, and the round steel pipe 2 and the T-shaped component 3 are arranged in opposite directions. The bottom of the round steel pipe 2 is sealed, and an opening that cooperates with the T-shaped component 3 is opened on the side of the round steel pipe 2 facing away from the T-shaped component 3. During the construction of the sheet pile support, after the previous sheet pile body 1 is driven into the soil, during the process of driving the next sheet pile body 1 into the soil, the T-shaped component 3 at its end passes through the round steel pipe 2 on the previous sheet pile body 1 from top to bottom, and waterproof material is injected into the gap formed by the connection between the two to achieve a waterproof connection between the two adjacent sheet pile bodies 1.
[0028] The two ends of the sheet pile body 1 are respectively modified into a round steel pipe 2 with a bottom-sealed end and a T-shaped component 3. The bottom-sealed end of the round steel pipe 2 can prevent the soil from entering the sheet pile body 1. In addition to cooperating with the T-shaped component 3 on the next sheet pile body 1 to complete the assembly, it also reduces the soil in the gap between the T-shaped component 3 and the round steel pipe 2, which facilitates the injection of waterproof material to form a waterproof assembly structure as a whole, thus solving the problem of weak waterproofing at the connection part of the sheet pile.
[0029] In order to seal the bottom of the round steel pipe 2, a sealing plate 6 is connected to the bottom of the round steel pipe 2. The sealing plate 6 is used to seal the bottom of the round steel pipe 2 so as to block the soil that the steel sheet pile body 1 directly contacts when it is driven into the soil.
[0030] To reduce the difficulty of injecting waterproofing material, a grouting pipe 4 is connected to the side of the T-shaped component 3 facing away from the round steel pipe 2. The bottom height of the grouting pipe 4 is greater than the bottom height of the T-shaped component 3. This integrates the grouting pipe 4 with the T-shaped component 3, eliminating the need for subsequent insertion of the grouting pipe 4. It also ensures that the waterproofing material injected by the grouting pipe 4 can fill the gap formed between the round steel pipe 2 and the T-shaped component 3 during the assembly of the adjacent sheet pile body 1, avoiding the problem of the bottom of the grouting pipe 4 being blocked by the bottom of the round steel pipe 2.
[0031] Furthermore, overflow holes are evenly distributed along the height of the grouting pipe 4; this can increase the efficiency and uniformity of injecting waterproof material into the gap formed by the round steel pipe 2 and the T-shaped component 3 through the grouting pipe 4, and avoid the problem of not being able to inject waterproof material due to the bottom of the grouting pipe 4 being blocked.
[0032] To ensure better assembly and fit between two adjacent sheet pile bodies 1, a limiting block 5 is connected to the side of the T-shaped component 3 closest to the sheet pile body 1. The width of the limiting block 5 is greater than the width of the opening on the circular steel pipe 2. The gap between the limiting block 5 and the end of the T-shaped component 3 that is connected to the sheet pile body 1 in the opposite direction is greater than the wall thickness of the circular steel pipe 2. The limiting block 5 and the T-shaped component 3 are distributed on the inner and outer sides of the circular steel pipe 2, which can increase the fit between the T-shaped component 3 and the circular steel pipe 2, better exert the corresponding waterproof effect, and at the same time avoid the problem of large displacement between adjacent sheet pile bodies 1.
[0033] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.
Claims
1. A type of sheet pile with a waterproof connecting interlock, used for splicing together to form sheet pile support, characterized in that, The sheet pile includes a sheet pile body and a round steel pipe and a T-shaped component respectively connected to both ends of the sheet pile body, and the round steel pipe and the T-shaped component are arranged in opposite directions. The bottom of the round steel pipe is sealed, and an opening that mates with the T-shaped component is provided on the side of the round steel pipe facing away from the T-shaped component; During the construction of sheet pile support, after the first sheet pile body is driven into the soil, during the driving process of the second sheet pile body, the T-shaped member at its end is inserted from top to bottom into the round steel pipe on the first sheet pile body, and waterproof material is injected into the gap formed by the connection between the two to achieve a waterproof connection between the two adjacent sheet pile bodies.
2. The sheet pile with a waterproof connecting lock according to claim 1, characterized in that: The bottom of the round steel pipe is connected to a sealing plate, and the bottom of the round steel pipe is sealed by the sealing plate.
3. The sheet pile with a waterproof connecting lock according to claim 1, characterized in that: A grouting pipe is connected to the side of the T-shaped component facing away from the round steel pipe, and the bottom height of the grouting pipe is greater than the bottom height of the T-shaped component.
4. The sheet pile with a waterproof connecting lock according to claim 3, characterized in that: The grouting pipe has overflow holes evenly distributed along its height.
5. The sheet pile with a waterproof connecting lock according to claim 1, characterized in that: A limiting block is connected to the side of the T-shaped component near the body of the sheet pile, and the width of the limiting block is greater than the width of the opening on the circular steel pipe; The gap formed between the limiting block and the end of the T-shaped component that is connected to the steel sheet pile body in the opposite direction is greater than the wall thickness of the round steel pipe.