Steel cover box cofferdam and bridge building device thereof

Abstract

The invention relates to a steel cover box cofferdam. The steel cover box cofferdam comprises a left cofferdam side plate and a right cofferdam side plate which are connected in a tenon buckling manner. The left cofferdam side plate comprises a wall plate, a male tenon baffle and male tenon clamping grooves. The male tenon baffle is in an outwards-convex n shape and comprises a male tenon top plate part and male tenon side plate parts. The male tenon clamping grooves are located in the protruding end of the protruding side of the male tenon baffle to form a shuttle shape. The right cofferdam side plate comprises a wall plate, a female tenon baffle, female tenon clamping blocks and fixing plates, the female tenon baffle is in an inwards-concaved n shape and comprises a female tenon bottom plate and female tenon side plate parts, and the female tenon clamping blocks and the male tenon clamping grooves are matched and installed on the female tenon side plate parts through springs. The fixing plates and the female tenon side plate parts are connected, fixing holes are formed in the female tenon clamping blocks, and fixing protrusions matched with the fixing holes are formed in the fixing plates, and when the female tenon clamping blocks and the male tenon clamping grooves are clamped, the fixing protrusions can be inserted into the fixing holes to be locked.

Description

technical field [0001] The invention relates to civil construction equipment, in particular to a casing cofferdam used for the construction of underwater caps of bridge piers. Background technique [0002] In the civil construction process of the underwater cap of the bridge pier, it is applied to the steel box. Generally, the steel box is first customized in pieces in the processing factory, then transported to the site, then assembled in pieces into a whole, and finally the whole is sunk and positioned on the construction site. This kind of working process not only requires large-scale lifting equipment, but also has the problem of being difficult to accurately sink and locate. If the sub-blocks sink and then close together to form a cofferdam, there will be poor handling of the gaps at the close-up places, and leakage accidents will often occur. Contents of the invention [0003] The present invention is made in view of the above-mentioned problems, and its purpose is...

AI Technical Summary

Problems solved by technology

[0003] The present invention is made in view of the above problems, and its purpose is to provide a steel box cofferdam that solves the technical problem that the existing steel cofferdams are prone to leakage at the underwater assembly lock.

Images