Large-scale shallow water floating cofferdam

Abstract

Disclosed is a large-scale shallow water floating cofferdam, relating to the large-scale cofferdam in bridge engineering. The cofferdam comprises an annular structure composed of two parallel cofferdam side plates, and is characterized in that the bottom part between the parallel cofferdam side plates and the parallel cofferdam side plates form a waterproof closed area, the inside of the annular structure is provided with a plurality of closed bottom compartments for reducing the underwater depth of the cofferdam and a plurality of bored piles which are matching with the pile positions of bridge pier, the closed bottom compartments are interconnected into a plurality of transverse and longitudinal columns, the two ends of the closed bottom compartments and the cofferdam side plates are connected to divide the cofferdam into a plurality of symmetrical work areas and avoid the position of bored piles, and the height of the closed bottom compartment is lower than that of the cofferdam side plate. The large-scale shallow water floating cofferdam of the invention has shallow underwater depth during cofferdam floating, reduces the requirement of the ship tonnage and mechanical equipment, has little water level influence to the floating navigation route, reduces cost, and has little perfusion area during the perfusion process of underwater back cover concrete and can guarantee the perfusion quality of the concrete.

Description

technical field [0001] The invention relates to a large cofferdam in bridge engineering, in particular to a large shallow water floating cofferdam. Background technique [0002] In China, the traditional cofferdam floating transportation is to fully seal the bottom of the cofferdam side plate to resist the influence of the cofferdam's own weight on the water entry depth of the cofferdam. After the cofferdam is launched, it will be consigned to the bridge site by tugboat. This kind of cofferdam floatation technology results in deep water entry depth during cofferdam floatation, large ship configuration tonnage, complex mechanical equipment configuration, and the floating navigation route is greatly affected by water level. In addition, during pouring of the underwater back cover concrete, the pouring area is large, and the pouring quality of the concrete cannot be guaranteed. Contents of the invention [0003] Aiming at the defects existing in the prior art, the object of...

AI Technical Summary

Problems solved by technology

This kind of cofferdam floating technology leads to deep water entry depth during cofferdam floating, large tonnage of ship configuration, complex mechanical equipment configuration, and floating navigation route is greatly affected by water level

Moreover, in the process of pouring concrete for the underwater back cover, the pouring area is large, and the pouring quality of the concrete cannot be guaranteed

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