Construction method of vertical rotation of steel cofferdam in water

Abstract

The invention discloses a construction method for vertically rotating a steel cofferdam in water. The method comprises the steps of S1, conveying the steel cofferdam to a field in a floating manner; and fixedly connecting the steel cofferdam with a front positioning ship; S2, connecting the steel cofferdam to a winch on the front positioning ship; releasing the fixed connection of the steel cofferdam and the front positioning steel; and enabling the steel cofferdam to float to arrive at a vertical rotating position under the effect of water stream; S3, connecting the steel cofferdam with a floating crane; lifting a main hook of the floating crane to separate a water fender at the side of a port in the bottom of the floating crane from the water surface; and cutting off the water fender; and S4, lowering the main hook of the floating crane to the side of the port in the bottom of the steel cofferdam after cutting the water fender; and inclining the steel cofferdam to the side of the port in the bottom until a steel cofferdam rotating body is in a vertical state. According to the method, the steel cofferdam is vertically rotated in water, so that the convenience of positioning and mounting the steel cofferdam is ensured.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a vertical rotation construction method of a steel cofferdam in water. Background technique [0002] The steel cofferdam is the water retaining structure of the cap platform construction. The steel cofferdam is usually used in the deep water foundation construction of the bridge. After the steel cofferdam is assembled on the water, the steel cofferdam is positioned and sinks to the river bed. For the river bed of the main pier with exposed bedrock, inclined rock surface, and large fluctuations, the double-walled steel cofferdam used in the cap platform construction has a large tonnage and a large height difference between the edge of the steel cofferdam, so it is impossible to use conventional methods for steel cofferdam Transport and install in place. Contents of the invention [0003] In view of the above problems, the object of the present invention is to provid...

AI Technical Summary

Problems solved by technology

For the river bed of the main pier with exposed bedrock, inclined rock surface, and large fluctuations, the double-walled steel cofferdam used in the cap platform construction has a large tonnage and a large height difference between the edge of the steel cofferdam, so it is impossible to use conventional methods for steel cofferdam Transport and install

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