Cofferdam structure

Abstract

The utility model relates to a cofferdam structure which comprises two rows of steel sheet piles arranged at intervals and each steel sheet pile is provided with a web plate and a side plate; the U-shaped clamping strips are horizontally arranged on the web plate and the side plates in pairs at intervals, and multiple rows of U-shaped clamping strips are arranged up and down at intervals; the surface-layer I-shaped steel is inserted between the horizontally-spaced U-shaped clamping strips in pairs, limiting bolts are arranged on the faces, opposite to the U-shaped clamping strips, of the surface-layer I-shaped steel, the positions of the limiting bolts correspond to the positions of the U-shaped clamping strips, the two surface-layer I-shaped steel are spaced, forward steel wedge strips are arranged on the faces, opposite to the U-shaped clamping strips, of the surface-layer I-shaped steel from top to bottom, and the upper portions of the forward steel wedge strips are narrow, and the lower portions of the forward steel wedge strips are wide; the core layer I-shaped steel is inserted between the two pieces of surface layer I-shaped steel to extrude the two pieces of surface layer I-shaped steel to realize translation, so that the limiting bolts are inserted into the U-shaped clamping strips; and the gravel layer is filled between the two rows of steel sheet piles. The integral rigidity of the steel sheet pile cofferdam can be enhanced, the integral sealing performance can be improved, and leakage can be prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the cofferdam field especially relates to a cofferdam structure. BACKGROUND

[0002] Such as China practical new type patent announcement number CN 219992515 U discloses a kind of steel sheet pile cofferdam, it includes multiple steel sheet pile body connected with each other, each steel sheet pile body both ends are provided with lock mouth, the steel sheet pile body is provided with pedal, the pedal is slid with extension plate, the extension plate is provided with connecting piece, the connecting piece is used to be connected with the pedal of another steel sheet pile body, the pedal is provided with driving element, the driving element is used to drive the extension plate moves in the direction away from or close to the pedal.It uses single-layer steel sheet pile, single-layer steel sheet pile rigidity is smaller, easy to produce larger lateral deformation, and waterproof performance is weaker, more dependent on additional waterproof measures, such as waterstop, but due to its large lateral deformation, easy to damage additional waterstop, lead to leakage phenomenon occurs. SUMMARY

[0003] The utility model aims at providing a kind of cofferdam structure, it adopts double-layer structure, it is favorable to enhance the overall rigidity of steel sheet pile cofferdam, and it is favorable to improve overall sealing performance, prevent leakage.

[0004] To solve the above problems and adopt a kind of cofferdam structure, it includes:

[0005] Steel sheet pile, it is arranged at intervals two rows, it has web and side plate;

[0006] U-shaped strip, it is arranged in pairs horizontally and at intervals on web and side plate, U-shaped strip is arranged at intervals in multiple rows;A section of being driven into soil is not provided with U-shaped strip, calculate the depth of being driven into soil in advance, and the part on soil is welded with U-shaped strip again.

[0007] Surface I-beam, it is inserted in pairs between horizontally spaced U-shaped strips, and the opposite side of U-shaped strip is provided with limiting bolt, the position of limiting bolt corresponds to the position of U-shaped strip, two surface I-beams are spaced apart, and the opposite side of U-shaped strip is provided with from top to bottom positive steel wedge strip, the positive steel wedge strip is narrow on top and wide on bottom, and the flange end side of surface I-beam abuts against steel sheet pile;

[0008] Core layer I-beam, it is inserted between two surface I-beams, to extrude two surface I-beams to realize translation, so that limiting bolt is inserted into U-shaped strip;

[0009] Gravel layer, it is filled between two rows of steel sheet piles. After two rows of steel sheet piles are driven, water is pumped out first, and then gravel layer is filled.

[0010] With the structure, the surface I-shaped steel and the core I-shaped steel are inserted, the two rows of steel sheet piles are tied, and then the sand and gravel is filled, so that the sand and gravel layer is compacted, the two rows of steel sheet piles are constrained in the process of compaction, the sand and gravel layer is more compacted, the overall sealing performance is better, the limiting bolt of the surface I-shaped steel ties the two rows of steel sheet piles, the core I-shaped steel prevents the surface I-shaped steel from slipping in the process of compacting the sand and gravel, and limiting effect is achieved, so that the sealing performance and the rigidity are improved as a whole.

[0011] As a further improvement of the utility model, reverse steel wedge strips are arranged on both sides of the core I-shaped steel from top to bottom, the reverse steel wedge strips are wide at the top and narrow at the bottom, the reverse steel wedge strips correspond to the positions of the forward steel wedge strips, and the two can be combined into a complete rectangle.

[0012] With the structure, the reverse steel wedge strips and the forward steel wedge strips are better constrained, and the surface I-shaped steel is prevented from moving sideways.

[0013] As a further improvement of the utility model, first lifting lugs are hingedly connected to the inner sides of the flanges of the surface I-shaped steel and the core I-shaped steel.

[0014] With the structure, the first lifting lugs facilitate hoisting by machines.

[0015] As a further improvement of the utility model, first U-shaped positioning strips are arranged on the lower end sides of the forward steel wedge strips, second U-shaped positioning strips are arranged on the upper ends of the reverse steel wedge strips, and galvanized square steel pipes are inserted into the first U-shaped positioning strips and the second U-shaped positioning strips.

[0016] With the structure, after the galvanized square steel pipes are inserted into the first U-shaped positioning strips and the second U-shaped positioning strips, the forward and backward displacement of the surface I-shaped steel and the core I-shaped steel is prevented.

[0017] As a further improvement of the utility model, the cofferdam structure is characterized in that the lock port side of the steel sheet pile abuts against an angle steel, the angle steel is arranged between the two rows of steel sheet piles, polyurethane foam is filled between the angle steel and the lock port, and a thin catheter is inserted into the gap between the angle steel and the lock port to inject and fill from bottom to top.

[0018] With the structure, after the angle steel is pressed against the compacted sand and gravel layer, the polyurethane foam is filled in the gap between the angle steel and the lock port, the sealing performance is further improved, and the polyurethane foam has stronger deformation adaptability.

[0019] As a further improvement of the utility model, a horizontal rod is welded between the two limbs of the angle steel, and a second lifting lug is threaded on the horizontal rod.

[0020] With the structure, the second lifting lug facilitates hoisting of the angle steel.

[0021] This invention is beneficial for enhancing the overall rigidity of steel sheet pile cofferdams and for improving overall sealing performance to prevent leakage. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment.

[0023] Figure 2 This is an exploded structural diagram of the I-beam for a sandwich structure.

[0024] Figure 3 A schematic diagram of the structure for installing galvanized square steel pipes.

[0025] Figure 4 A schematic diagram of the structure for installing the second lifting lug at the upper end of the angle steel.

[0026] Attached reference numerals: 1. Sheet pile; 101. Web; 102. Side plate; 103. Interlock;

[0027] 2. U-shaped card strip;

[0028] 3. Surface H-beam; 301. Limit bolt; 302. Positive steel wedge; 303. First U-shaped positioning strip

[0029] 4. Core layer H-beam; 401. Reverse steel wedge; 402. Second U-shaped positioning strip

[0030] 5. Gravel layer; 6. First lifting lug; 7. Galvanized square steel pipe;

[0031] 8. Angle steel; 801. Crossbar; 802. Second lifting lug. Detailed Implementation

[0032] 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.

[0033] Example 1

[0034] like Figures 1-4 As shown, a cofferdam structure includes:

[0035] Steel sheet pile 1, which is arranged in two rows at intervals, has a web 101 and a side plate 102;

[0036] U-shaped clips 2 are arranged in pairs at horizontal intervals on the web plate 101 and the side plate 102, and multiple rows of U-shaped clips 2 are arranged at vertical intervals.

[0037] The surface I-beam 3 is inserted between the horizontally spaced U-shaped clamping strips 2, and the opposite side of the surface I-beam 3 is provided with a limiting pin 301, the position of the limiting pin 301 corresponds to the position of the U-shaped clamping strip 2, and the two surface I-beams 3 are spaced apart, and the side opposite to the U-shaped clamping strip 2 is provided with a positive steel wedge strip 302 from top to bottom, the positive steel wedge strip 302 is narrow at the top and wide at the bottom, and the flange end side of the surface I-beam 3 abuts against the steel sheet pile 1.

[0038] The core I-beam 4 is inserted between the two surface I-beams 3 to squeeze the two surface I-beams 3 to realize translation, so that the limiting pin 301 is inserted into the U-shaped clamping strip 2.

[0039] The gravel layer 5 is filled between the two rows of steel sheet piles 1.

[0040] With such a structure, after the surface I-beam 3 and the core I-beam 4 are inserted, the two rows of steel sheet piles 1 are pulled together, and then the gravel is filled, which facilitates the compaction of the gravel layer. In the process of compaction, the two rows of steel sheet piles 1 are constrained, so that the gravel layer is more compacted, the overall sealing performance is better, the limiting pin 301 of the surface I-beam 3 pulls the two rows of steel sheet piles 1 together, and the core I-beam 4 prevents the surface I-beam 3 from slipping during the compaction of the gravel, thereby improving the sealing performance and rigidity as a whole.

[0041] In the embodiment, the reverse steel wedge strip 401 is provided on both sides of the core I-beam 4 from top to bottom, the reverse steel wedge strip 401 is wide at the top and narrow at the bottom, and the reverse steel wedge strip 401 corresponds to the position of the positive steel wedge strip 302, and the two can be combined to form a complete rectangle.

[0042] With such a structure, the reverse steel wedge strip 401 and the positive steel wedge strip 302 constrain each other better, preventing the surface I-beam 3 from moving sideways.

[0043] In the embodiment, the flange inner side of the surface I-beam 3 and the core I-beam 4 is hinged with a first lifting lug 6.

[0044] With such a structure, the first lifting lug 6 facilitates the lifting of the machine tool.

[0045] In the embodiment, the first U-shaped positioning strip 303 is provided on the lower end side of the positive steel wedge strip 302, and the second U-shaped positioning strip 402 is provided on the upper end of the reverse steel wedge strip 401, and the galvanized square steel pipe 7 is inserted into the first U-shaped positioning strip 303 and the second U-shaped positioning strip 402.

[0046] With such a structure, after the galvanized square steel pipe 7 is inserted into the first U-shaped positioning strip 303 and the second U-shaped positioning strip 402, it is beneficial to prevent the surface I-beam 3 and the core I-beam 4 from shifting forward and backward.

[0047] In the embodiment, the cofferdam structure is characterized in that the lock joint 103 side of the steel sheet pile 1 abuts against the angle steel 8, the angle steel 8 is arranged between the two rows of steel sheet piles 1, and the gap between the angle steel 8 and the lock joint 103 is filled with polyurethane foam.

[0048] With the structure, the angle steel 8 is further pressed by the compacted sand and gravel layer, and then the gap between the angle steel 8 and the lock joint 103 is filled with polyurethane foam, so that the sealing performance is further improved, and the polyurethane foam has stronger adaptability to deformation.

[0049] In the embodiment, the two limbs of the angle steel 8 are welded with the horizontal rod 801, and the second lifting lug 802 is arranged on the horizontal rod 801.

[0050] With the structure, the second lifting lug 802 is beneficial to lifting the angle steel 8.

[0051] The above is the further detailed description of the utility model in combination with the specific preferred embodiment, and the specific implementation of the utility model cannot be limited to the description. For the person skilled in the art to which the utility model belongs, without departing from the concept of the utility model, a number of equivalent substitutions or obvious modifications can be made, and the same performance or use is also regarded as belonging to the protection scope of the utility model.

Claims

1. A cofferdam structure, characterized by The utility model relates to a cofferdam structure, including: Steel sheet pile (1) is arranged two rows at intervals, has web (101) and side plate (102); U type card strip (2) is arranged on web (101) and side plate (102) in pair horizontal interval, and U type card strip (2) is arranged multiple rows at intervals up and down; Surface I-steel (3) is inserted between the horizontally spaced U type card strip (2) in pair, and the opposite side of surface I-steel (3) and U type card strip (2) is provided with limiting bolt (301), the position of limiting bolt (301) corresponds with the position of U type card strip (2), and the opposite side of two surface I-steel (3) and U type card strip (2) is provided with from top to bottom positive steel wedge strip (302), and positive steel wedge strip (302) is narrow on top and wide on bottom, and the flange end side of surface I-steel (3) abuts against steel sheet pile (1); Core layer I-steel (4) is inserted between two surface I-steel (3) to extrude two surface I-steel (3) and realizes translation, so that limiting bolt (301) is inserted into U type card strip (2); Gravel layer (5) is filled between two rows of steel sheet pile (1).

2. The cofferdam structure of claim 1, wherein The two sides of core layer I-steel (4) are provided with reverse steel wedge strip (401) from top to bottom, the reverse steel wedge strip (401) is wide on top and narrow on bottom, the reverse steel wedge strip (401) corresponds with the position of positive steel wedge strip (302), and the two can be combined into a complete rectangle.

3. The cofferdam structure of claim 1, wherein The flange inner side of surface I-steel (3) and core layer I-steel (4) is hinged first lifting lug (6).

4. The cofferdam structure of claim 2, wherein The lower end side of positive steel wedge strip (302) is provided with first U type positioning strip (303), the upper end of reverse steel wedge strip (401) is provided with second U type positioning strip (402), galvanized square steel pipe (7) is inserted in first U type positioning strip (303) and second U type positioning strip (402).

5. The cofferdam structure of claim 1, wherein The cofferdam structure is characterized in that the lock mouth (103) side of steel sheet pile (1) abuts against angle steel (8), the angle steel (8) is arranged between two rows of steel sheet pile (1), and the lock mouth (103) between the angle steel (8) is filled with polyurethane foam.

6. The cofferdam structure of claim 5, wherein The two limbs of angle steel (8) are welded with cross bar (801), and second lifting lug (802) is penetrated on cross bar (801).

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