CN219527701U

CN219527701U - Shallow-coverage steel pipe pile cofferdam

Info

Publication number: CN219527701U
Application number: CN202320846285.5U
Authority: CN
Inventors: 刘文浩; 周日瑜; 冯前进; 卿迟; 叶柯志; 孙劲声; 郭俊江; 雷玲香
Original assignee: Guangdong No 2 Hydropower Engineering Co Ltd
Current assignee: Guangdong No 2 Hydropower Engineering Co Ltd
Priority date: 2023-04-17
Filing date: 2023-04-17
Publication date: 2023-08-15
Anticipated expiration: 2033-04-17

Abstract

The utility model provides a shallow-coverage steel pipe pile cofferdam, which comprises steel pipe piles, a plurality of layers of inner supports, a plurality of layers of inner support ring beams and waterproof curtains, wherein the steel pipe piles are arranged on the inner sides of the shallow-coverage steel pipe pile cofferdam; the steel pipe piles are uniformly distributed to form a frame structure, a plurality of layers of inner support ring beams are arranged on the inner sides of the steel pipe piles along the length direction, and corresponding inner supports are connected between each layer of inner support ring beams; and a waterproof curtain is further arranged on the outer side of the frame formed by surrounding the steel pipe piles. According to the utility model, the waterproof curtain is arranged on the outer side of the frame formed by surrounding the steel pipe piles, so that the construction is convenient, the water penetration of the bottom of the steel pipe pile cofferdam is reduced, the steel pipe pile cofferdam is sealed in a dry mode, and the steel pipe pile cofferdam is suitable for a shallow coverage cofferdam and has high practicability; according to the utility model, the inner support and the inner support ring beam are arranged in the frame formed by surrounding the steel pipe piles, so that the stability of the cofferdam is improved.

Description

Shallow-coverage steel pipe pile cofferdam

Technical Field

The utility model relates to the technical field of bridges, in particular to a shallow-coverage steel pipe pile cofferdam.

Background

Along with the acceleration of traffic construction, bridge construction also enters a new development stage, large-scale river-crossing bridge engineering continuously appears, and a batch of new bridge construction technology is widely applied. Especially, the construction of bridge foundations with complex deepwater and geological conditions can also bring special requirements to the cofferdam structure.

The cofferdam is mainly used as a water retaining and soil retaining structure for bridge foundation construction, and the borne load comprises water flow impact force, water head pressure, soil pressure and the like, so that space is provided for bridge foundation construction.

However, for the geological condition of shallow covering layer, the problems of shallow cofferdam penetration depth and large cofferdam bottom water pressure exist, so that a construction bearing platform is not safe and reliable enough, and the construction of a bridge is affected.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a shallow-coverage steel pipe pile cofferdam.

The technical scheme of the utility model is as follows: a shallow-coverage steel pipe pile cofferdam comprises steel pipe piles, a plurality of layers of inner supports, a plurality of layers of inner support ring beams and waterproof curtains; the steel pipe piles are uniformly distributed to form a frame structure, a plurality of layers of inner support ring beams are arranged on the inner sides of the steel pipe piles along the length direction, and corresponding inner supports are connected between each layer of inner support ring beams; and a waterproof curtain is further arranged on the outer side of the frame formed by surrounding the steel pipe piles.

Preferably, brackets are further arranged between the inner support ring beams and the inner supports at the two most ends of each layer.

Preferably, a concrete cushion layer is further arranged at the bottom of the inner side of the frame formed by surrounding the steel pipe piles.

Preferably, the distance between the steel pipe piles is 20-40cm, and the adjacent steel pipe piles are connected through a lock catch.

Preferably, the number of layers of the inner support and the inner support ring beam is at least 4.

Preferably, the waterproof curtain is formed by casting cement paste or cement-water glass paste.

Preferably, the lock catch comprises a circular pipe arranged on the side wall of one steel pipe pile, and a clamping groove is formed in one side, far away from the steel pipe pile, of the circular pipe along the length direction;

the lock catch also comprises an I-shaped clamping piece arranged on the side wall of the other steel pipe pile, and the I-shaped clamping piece is clamped with the clamping groove of the round pipe.

The beneficial effects of the utility model are as follows:

1. according to the utility model, the waterproof curtain is arranged on the outer side of the frame formed by surrounding the steel pipe piles, so that the construction is convenient, the water penetration of the bottom of the steel pipe pile cofferdam is reduced, the steel pipe pile cofferdam is sealed in a dry mode, and the steel pipe pile cofferdam is suitable for a shallow coverage cofferdam and has high practicability;

2. according to the utility model, the inner support and the inner support ring beam are arranged in the frame formed by surrounding the steel pipe piles, so that the stability of the cofferdam is improved.

Drawings

FIG. 1 is a schematic top view of the present utility model;

FIG. 2 is a schematic elevational view of the present utility model;

FIG. 3 is an enlarged schematic view of the latch of the present utility model;

in the figure, a 1-steel pipe pile; 2-internal support; 3-an inner support ring beam; 4-a waterproof curtain; 5-corbels; 6-concrete cushion; 8-locking;

81-a circular tube; 82-clamping groove, 83-I-shaped clamping piece.

Detailed Description

The following is a further description of embodiments of the utility model, taken in conjunction with the accompanying drawings:

as shown in fig. 1-2, the embodiment provides a shallow-coverage steel pipe pile cofferdam, which comprises a steel pipe pile 1, a multi-layer inner support 2, a multi-layer inner support ring beam 3 and a waterproof curtain 4; the steel pipe piles 1 are uniformly distributed to form a frame structure, a plurality of layers of inner support ring beams 3 are arranged on the inner sides of the steel pipe piles 1 along the length direction, and corresponding inner supports 2 are connected between each layer of inner support ring beams 3; and a waterproof curtain 4 is further arranged on the outer side of the frame formed by surrounding the steel pipe piles 1.

As a preferred embodiment, a bracket 5 is further arranged between the inner support ring beam 3 and the inner support 2 at the two most ends of each layer.

As a preferable example, the bottom of the inner side of the frame surrounded by the steel pipe piles 1 is further provided with a concrete cushion layer 6.

In this embodiment, the distance between the steel pipe piles 1 is preferably 20-40cm, and the adjacent steel pipe piles 1 are connected by the lock catch 8.

As a preferred embodiment, the number of layers of the inner support 2 and the inner support ring beam 3 is at least 4.

Preferably, the waterproof curtain 4 is formed by casting cement paste or cement-water glass paste.

As a preferable example, the lock catch 8 shown in fig. 3 includes a circular pipe 81 disposed on a side wall of one of the steel pipe piles 1, and a clamping groove 82 is formed on a side of the circular pipe 81 away from the steel pipe pile 1 along a length direction;

the lock catch 8 further comprises an I-shaped clamping piece 83 arranged on the side wall of the other steel pipe pile 1, and the I-shaped clamping piece 83 is clamped with the clamping groove 82 of the circular pipe 81.

The foregoing embodiments and description have been provided merely to illustrate the principles and best modes of carrying out the utility model, and various changes and modifications can be made therein without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. The utility model provides a shallow cover layer steel-pipe pile cofferdam which characterized in that: the multi-layer inner support ring beam comprises a plurality of steel pipe piles (1), a plurality of layers of inner supports (2), a plurality of layers of inner support ring beams (3) and a waterproof curtain (4); the steel pipe piles (1) are uniformly distributed to form a frame structure, a plurality of layers of inner support ring beams (3) are arranged on the inner sides of the steel pipe piles (1) along the length direction, and corresponding inner supports (2) are further connected between the inner support ring beams (3) of each layer; and a waterproof curtain (4) is further arranged on the outer side of the frame surrounded by the steel pipe piles (1).

2. The shallow-cladding steel-pipe pile cofferdam of claim 1, wherein: and a bracket (5) is arranged between the inner support ring beam (3) and the inner support (2) at the two most ends of each layer.

3. The shallow-cladding steel-pipe pile cofferdam of claim 1, wherein: the bottom of the inner side of the frame surrounded by the steel pipe piles (1) is also provided with a concrete cushion layer (6).

4. The shallow-cladding steel-pipe pile cofferdam of claim 1, wherein: the distance between the steel pipe piles (1) is 20-40cm, and the adjacent steel pipe piles (1) are connected through the lock catch (8).

5. The shallow-cladding steel-pipe pile cofferdam of claim 1, wherein: the number of layers of the inner support (2) and the inner support ring beam (3) is at least 4.

6. The shallow-cladding steel-pipe pile cofferdam of claim 1, wherein: the waterproof curtain (4) is formed by casting cement paste or cement-water glass paste.

7. The shallow-cladding steel-pipe pile cofferdam of claim 4, wherein: the lock catch (8) comprises a circular pipe (81) arranged on the side wall of one steel pipe pile (1), and a clamping groove (82) is formed in one side, far away from the steel pipe pile (1), of the circular pipe (81) along the length direction;

the lock catch (8) further comprises an I-shaped clamping piece (83) arranged on the side wall of the other steel pipe pile (1), and the I-shaped clamping piece (83) is clamped with the clamping groove (82) of the circular pipe (81).