Steel sheet pile cofferdam structure

Abstract

The utility model relates to a steel sheet pile cofferdam structure which comprises two rows of steel sheet piles arranged at intervals and provided with webs, side plates and locking openings. The U-shaped clamping strips are arranged on the web plate and the side plates at intervals, multiple rows of U-shaped clamping strips are vertically arranged at intervals, the two sides of each U-shaped clamping strip are arc-shaped, the opening end of each U-shaped clamping strip deviates from the inner side of the steel sheet pile, and the central angle corresponding to the opening of each U-shaped clamping strip is smaller than 180 degrees; the U-shaped clamping strip is arranged on the buried section of the steel sheet pile, the buried depth is calculated in advance, and then the U-shaped clamping strip is welded to the pile body which does not need to be buried into the soil. The I-shaped steel comprises a flange plate and a web plate, the I-shaped steel is arranged between the two rows of steel sheet piles in the mode that the flange plate is opposite to the steel sheet piles, a steel pipe is fixedly connected to the flange plate, and the steel pipe is matched with the inner side of the U-shaped clamping strip; and the gravel layer is filled between the two rows of steel sheet piles. After the two rows of steel sheet piles are driven, water is pumped firstly, and then the gravel layer is filled. The utility model has a sandwich structure, which is favorable for improving the overall rigidity, thereby improving the sealing performance and preventing leakage.

Description

Technical Field

[0001] This utility model relates to the field of cofferdams, and in particular to a steel sheet pile cofferdam structure. Background Technology

[0002] For example, Chinese Utility Model Patent Publication No. CN214784067U discloses a steel sheet pile cofferdam structure, which includes several pile foundations and a steel sheet pile cofferdam body surrounding the pile foundations. A pile cap is provided at the top of each pile foundation. Above the pile cap, an upper support assembly is installed inside the steel sheet pile cofferdam body to support the upper part of the body. Below the pile cap, several lower support assemblies are respectively provided between the pile foundations located at the edges and the steel sheet pile cofferdam body on one or both sides. This structure uses a single row of steel sheet piles. Because of the large lateral deformation of single-layer steel sheets, these piles are prone to damaging waterproofing measures such as waterstops, thus easily leading to leakage. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a steel sheet pile cofferdam structure, which is a sandwich structure, which is beneficial to improve the overall rigidity, thereby improving the sealing performance and preventing leakage.

[0004] To solve the above problems, a steel sheet pile cofferdam structure was adopted, which includes:

[0005] Sheet piles are arranged in two rows at intervals, and each sheet pile has a web, side plates, and interlocking joints.

[0006] U-shaped clips are spaced out on the web and side plates of the sheet pile. Multiple rows of U-shaped clips are spaced out on the top and bottom. The two sides are arc-shaped, and the open end is away from the inside of the sheet pile. The central angle corresponding to the opening is less than 180 degrees.

[0007] U-shaped retaining strips are installed on the section of the sheet pile that is driven into the ground. The depth of drive into the ground is calculated in advance, and then the U-shaped retaining strips are welded onto the pile body that does not need to be driven into the ground.

[0008] An I-beam, comprising a flange plate and an I-beam web, is arranged between two rows of sheet piles with the flange plate facing the sheet piles. A steel pipe is fixed to the flange plate, and the steel pipe is adapted to the inner side of the U-shaped clip.

[0009] A gravel layer was filled between two rows of sheet piles. After the two rows of sheet piles were driven, the water was pumped out first, and then the gravel layer was filled in.

[0010] With this structure, the steel pipe is inserted and limited by the U-shaped clamp, which is conducive to connecting the two rows of steel sheet piles. The I-beams increase the overall rigidity and facilitate the compaction of the gravel layer during the filling process, making it more compact. This improves the problem of large lateral deformation and easy leakage of single-row steel sheet piles.

[0011] In this embodiment, multiple steel pipes are spaced apart on the flange plate.

[0012] With this structure, multiple steel pipes are installed on one flange, making it more stable to insert multiple U-shaped clips into the steel pipes at the same time.

[0013] In this embodiment, a first rib is provided between the flange and the web of the I-beam.

[0014] This structure helps to improve the overall rigidity of the I-beam.

[0015] In this embodiment, a second rib is provided between the flange plate and the steel pipe and then welded together.

[0016] This structure allows for a tighter connection between the flange plate and the steel pipe.

[0017] In this embodiment, a third rib is provided between the U-shaped clip and the steel sheet pile and then welded together.

[0018] This structure not only makes the connection between the U-shaped clamp and the sheet pile tighter, but the third rib also helps to improve the lateral stiffness of the U-shaped clamp and prevent its open end from expanding.

[0019] In this embodiment, the locking edge abuts against the angle steel, the angle steel is set between two rows of steel sheet piles, and polyurethane foam is filled between the angle steel and the locking edge.

[0020] With this structure, polyurethane foam is injected slowly from bottom to top into the gap between the angle steel and the interlocking joint through a thin conduit, ensuring that the polyurethane foam fully expands. At this time, the angle steel is first compressed by the gravel layer and the steel sheet pile, and then the polyurethane foam is injected to form a sealing layer.

[0021] In this embodiment, the first lifting lug is hinged to the flange plate of the I-beam.

[0022] This structure makes it easy to lift I-beams.

[0023] In this embodiment, a crossbar is welded between the two legs of the angle steel, and a second lifting lug is threaded through the crossbar.

[0024] This structure makes it easy to lift angle steel.

[0025] This utility model features a double-layer sandwich structure, which helps to improve overall rigidity, thereby improving sealing performance and preventing leakage. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an embodiment.

[0027] Figure 2This is a partially enlarged structural diagram of an embodiment.

[0028] Figure 3 This is a schematic diagram of an I-beam.

[0029] Figure 4 This is a schematic diagram of the angle steel structure.

[0030] Reference numerals: 1. Sheet pile; 101. Web of sheet pile; 102. Side plate; 103. Interlock;

[0031] 2. U-shaped card strip;

[0032] 3. I-beam; 301. Flange plate; 302. Web plate of I-beam; 303. Steel pipe; 304. First rib plate; 305. Second rib plate; 306. First lifting lug;

[0033] 4. Gravel layer; 5. Third rib;

[0034] 6. Angle steel; 601. Crossbar; 602. Second lifting lug. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" 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.

[0037] Example 1

[0038] like Figures 1-4 As shown, a steel sheet pile cofferdam structure includes:

[0039] Sheet pile 1, which is arranged in two rows at intervals, has a sheet pile web 101, a side plate 102 and a lock 103;

[0040] U-shaped clips 2 are spaced out on the web 101 and side plate 102 of the sheet pile. Multiple rows of U-shaped clips 2 are spaced out vertically. The two sides are arc-shaped. The open end of the clips is away from the inside of the sheet pile 1. The central angle corresponding to the opening is less than 180 degrees.

[0041] U-shaped clamps 2 are installed on the section of the sheet pile 1 that is driven into the ground. The depth of driving into the ground is calculated in advance, and then U-shaped clamps 2 are welded onto the pile body that does not need to be driven into the ground.

[0042] The I-beam 3 includes a flange plate 301 and an I-beam web plate 302. It is arranged between two rows of sheet piles 1 with the flange plate 301 facing the sheet piles 1. A steel pipe 303 is fixedly connected to the flange plate 301. The steel pipe 303 is adapted to the inner side of the U-shaped clip 2.

[0043] Gravel layer 4 is filled between two rows of sheet piles 1. After the two rows of sheet piles are driven, the water is first pumped out, and then gravel layer 4 is filled in.

[0044] With this structure, the steel pipe 303 is inserted and limited by the U-shaped clamp 2, which is conducive to connecting the two rows of steel sheet piles. The I-beam 3 increases the overall rigidity and facilitates the compaction of the gravel layer 4 during the filling process, making it more compact. This improves the problem of large lateral deformation and easy leakage of single-row steel sheet piles.

[0045] In this embodiment, multiple steel pipes 303 are spaced apart on the flange plate 301.

[0046] With this structure, multiple steel pipes 303 are installed on a flange plate 301, making it more stable to insert multiple U-shaped clips 2 into the multiple steel pipes 303 at the same time.

[0047] In this embodiment, a first rib 304 is provided between the flange 301 and the web of the I-beam 302.

[0048] This structure helps to improve the overall stiffness of the I-beam 3.

[0049] In this embodiment, a second rib 305 is provided between the flange plate 301 and the steel pipe 303 and welded thereon.

[0050] This structure allows for a tighter connection between the flange plate 301 and the steel pipe 303.

[0051] In this embodiment, a third rib 5 is provided between the U-shaped clip 2 and the sheet pile 1 and welded thereon.

[0052] This structure not only makes the connection between the U-shaped clamp 2 and the sheet pile 1 tighter, but the third rib 5 also helps to improve the lateral stiffness of the U-shaped clamp 2 and prevent its open end from expanding.

[0053] In this embodiment, the locking opening 103 abuts against the angle steel 6 on its side. The angle steel 6 is disposed between two rows of steel sheet piles 1, and polyurethane foam is filled between the angle steel 6 and the locking opening 103.

[0054] With this structure, polyurethane foam is injected through a thin conduit into the gap between the angle steel 6 and the interlock 103, slowly from bottom to top to ensure that the polyurethane foam fully expands. At this time, the angle steel 6 is first compressed by the gravel layer and the steel sheet pile, and then the polyurethane foam is injected to form a sealing layer.

[0055] In this embodiment, a first lifting lug 306 is hinged to the flange plate 301 of the I-beam 3.

[0056] This structure facilitates the lifting of the I-beam 3.

[0057] In this embodiment, a crossbar 601 is welded between the two legs of the angle steel 6, and a second lifting lug 602 is threaded through the crossbar 601.

[0058] This structure facilitates the lifting of angle steel 6.

[0059] This utility model features a double-layer sandwich structure, which helps to improve overall rigidity, thereby improving sealing performance and preventing leakage.

[0060] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several equivalent substitutions or obvious modifications can be made without departing from the concept of the present invention, and all such modifications, with identical performance or use, should be considered within the protection scope of the present invention.

Claims

1. A steel sheet pile cofferdam structure characterized by include: Sheet piles (1) are arranged in two rows at intervals, and have a sheet pile web (101), side plates (102) and interlocking joints (103). U-shaped clips (2) are spaced on the web (101) and side plate (102) of the sheet pile. The U-shaped clips (2) are spaced in multiple rows, with arc-shaped sides. The open end of the clips is away from the inside of the sheet pile (1), and the central angle corresponding to the opening is less than 180 degrees. I-beam (3), which includes a flange plate (301) and an I-beam web plate (302), is set between two rows of sheet piles (1) with the flange plate (301) facing the sheet piles (1). A steel pipe (303) is fixed on the flange plate (301), and the steel pipe (303) is adapted to the inner side of the U-shaped clip (2). A gravel layer (4) is filled between two rows of sheet piles (1).

2. The steel sheet pile cofferdam structure according to claim 1, characterized by The steel pipe (303) is provided at intervals on the flange plate (301).

3. The steel sheet pile cofferdam structure according to claim 1, characterized by A first rib (304) is provided between the flange (301) and the web of the I-beam (302).

4. The steel sheet pile cofferdam structure according to claim 1, characterized by A second rib (305) is provided between the flange plate (301) and the steel pipe (303) and welded thereon.

5. The steel sheet pile cofferdam structure according to claim 1, characterized by A third rib (5) is provided between the U-shaped clip (2) and the sheet pile (1) and welded thereon.

6. The steel sheet pile cofferdam structure according to claim 1, characterized by The locking opening (103) abuts against the angle steel (6) on one side. The angle steel (6) is set between two rows of steel sheet piles (1). The space between the angle steel (6) and the locking opening (103) is filled with polyurethane foam.

7. The steel sheet pile cofferdam structure according to claim 1, characterized by The first lifting lug (306) is hinged to the flange plate (301) of the I-beam (3).

8. The steel sheet pile cofferdam structure according to claim 6, characterized by A crossbar (601) is welded between the two legs of the angle steel (6), and a second lifting lug (602) is threaded through the crossbar (601).

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