Single-wall steel suspended box cofferdam

Abstract

The invention discloses a single-wall steel suspended box cofferdam, which is a single-wall steel suspended box cofferdam used by a construction bearing platform in deep water and is an improvement on a single-wall steel suspended box cofferdam structure. The single-wall steel suspended box cofferdam comprises a top joint, a bottom joint, fasteners, bolts and nuts; the lower edge of the top joint and the upper edge of the bottom joint are provided with the fasteners; and the top joint and the bottom joint are fastened by the bolts and the nuts. The cofferdam is characterized in that the upper edge of the top joint is provided with an upper fastener which is provided with a screw hole, each interval of the bolt is changed into a screw, two ends of the screw are provided with screw threads, the upper end of the screw is provided with a screw hole through the upper fastener, two ends of the screw are fixed by the nuts, and the nuts at the lower end of the fixed screw are fixed on the bottom joint. The single-wall steel suspended box cofferdam has the advantages that the detachment work does not need to be constructed in water, a diving device and an underwater cutting device are not needed so as to save expenses of the diving device and the underwater cutting device, a diving staff is not needed, and the total investment is saved.

Description

Technical field: [0001] The invention is a single-wall steel hanging box cofferdam used for construction caps in deep water, and is an improvement on the structure of the single-wall steel hanging box cofferdam. Background technique: [0002] The single-wall steel hanging box cofferdam is used in the construction of deep-water bridge high pile caps. In the traditional method, the top and bottom sections of the single-wall steel hanging box cofferdam are fastened and connected with short bolts and nuts, but this single-wall When the steel hanging box cofferdam is dismantled, there will be a gap between the top section and the bottom section at the place where the short bolts are initially removed, and the water will flow backwards. The more short bolts are removed, the larger the gap between the top section and the bottom section will be. The more water is poured back, the remaining short bolts can only be dismantled underwater, which increases the difficulty of dismantling. ...

AI Technical Summary

Problems solved by technology

[0002] The single-wall steel hanging box cofferdam is used in the construction of deep-water bridge high pile caps. In the traditional method, the top and bottom sections of the single-wall steel hanging box cofferdam are fastened and connected with short bolts and nuts, but this single-wall When the steel hanging box cofferdam is dismantled, there will be a gap between the top section and the bottom section at the place where the short bolts are initially removed, and the water will flow backwards. The more short bolts are removed, the larger the gap between the top section and the bottom section will be. The more water poured back, the remaining short bolts can only be dismantled by diving underwater, which increases the difficulty of dismantling. The cost of cutting in underwater diving is high and the technical difficulty is greater

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