Pier cofferdam tool for bridge construction

Abstract

The invention provides a pier cofferdam tool for bridge construction, and relates to the technical field of bridge construction devices. The pier cofferdam tool for bridge construction comprises a plurality of frames and a plurality of water fenders, wherein a baffle is integrally machined on one side of one water fender, a clamping plate is further arranged on the side of the water fender, a fixing plate is fixedly connected to the other side of the water fender, a clamping strip with the T-shaped cross section is fixedly connected to the side, which faces the clamping plate, of the fixing plate, an air storage bag is connected to the front side of the water fender, a protection plate is fixedly connected to the outer side of the air storage bag, a communicating pipe is fixedly connected to one side of the air storage bag, and a sealing air bag which is located behind the air storage bag is further installed in the water fender. According to the pier cofferdam tool for bridge construction, after the air storage bag is contracted, air in the air storage bag flows into the sealing air bag from the interior of the communicating pipe, the sealing air bag is expanded and extends into the water fender, a gap at the joint of the water fender is conveniently filled, the sealing performance is improved, and water leakage is prevented.

Description

technical field [0001] The invention relates to a cofferdam device, in particular to a pier cofferdam tool for bridge construction, and belongs to the technical field of bridge construction devices. Background technique [0002] In bridge foundation construction, when the bridge piers and abutment foundations are below the surface water level, various forms of earth weirs need to be built. In rivers with deep water and high flow velocity, wooden sheet piles or steel sheet pile cofferdams can be used, and even cofferdams with diaphragm wall structures can be built. The function of the cofferdam can not only waterproof and surround water, but also support the pit wall of the foundation pit. [0003] In the construction of foundation pits with less groundwater or shallow water, the existing cofferdams can meet various requirements and have good economic efficiency. However, in the protection of deep foundation pits or deep water construction, the existing steel sheet pile cof...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide bridge pier cofferdam equipment for bridge construction in order to solve the above problems, so as to solve the problem that in the prior art, the gaps between adjacent steel plates are prone to leakage, the water pressure in deep water is high, and the waterproofing in the gaps is easy to fail.

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