Double-wall steel boxed cofferdam

Abstract

The invention discloses a double-wall steel boxed cofferdam, which comprises a double-wall steel boxed cofferdam body consisting of an inner wall board and an outer wall board, and a plurality of guide devices which are arranged on the internal sides of the inner wall board. Each guide device comprises a vertically arranged guide column. A plurality of vertical baffles are arranged between the inner wall board and the outer wall board. A plurality of through holes which are used for regulating water head or concrete volume of two adjacent chambers are arranged in each baffle. A three-way joint is additionally arranged between the inner wall board and the outer wall board. A plurality of sliding ways are welded on the guide columns. Each guide device additionally comprises a steel pipe pile which is vertically welded on the internal side wall of the inner wall board. One ends of a plurality of supports are welded on the steel pipe piles. Plugs which can slide up and down in the sliding ways are welded at the other ends of the supports. The double-wall steel boxed cofferdam provided by the invention has the advantages that the guide devices can accurately position the plane position of the cofferdam; and the three-way joint and the through holes can ensure the plane position and the verticality of the cofferdam in the sinking process and the construction operation is simple, convenient and feasible.

Description

technical field [0001] The invention relates to building construction equipment, in particular to a double-wall steel box cofferdam. Background technique [0002] In the construction of foundation projects such as bridges and buildings, double-wall steel casing cofferdams are widely used. A bracket is welded on the inner wall of the existing double-wall steel casing cofferdam, and a guide wheel is welded on the bracket, and the guide wheel leans against the guide column on the inner side of the cofferdam to play a guiding role; during the sinking process of the cofferdam, in order to maintain The water head inside and outside the cofferdam is poor, and water pumps are needed to replenish water into the cofferdam; in the process of pouring ballasted concrete, single-chamber-by-chamber pouring is generally used. The existing double-wall steel casing cofferdam and its construction method have the following disadvantages, especially in the construction process of deep water fou...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to solve the problem that the double-wall steel box cofferdam can not be accurately positioned and the construction operation is cumbersome and complicated during the process of positioning and correcting the deviation.

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