Method for assembling cofferdam

Abstract

The invention provides a method for assembling a cofferdam. The method for assembling the cofferdam solves the problem that in the prior art, when a cofferdam with insufficient buoyancy is transported in a side-lying and floating mode, due to the fact that the immersion depth of the cofferdam is larger than the smallest depth in a channel, the cofferdam is stranded in the floating transportation process. The method for assembling the cofferdam comprises the steps of selecting a first lateral side from a plurality of lateral sides, producing a first water fender and a second water fender according to the area of the first lateral side and the weight of the cofferdam regarding the first lateral side as the bottom, combining the lateral sides into a frame-surrounding structure, arranging the first water fender at the position of a top opening of the frame-surrounding structure, and arranging the second water fender at the position of a bottom opening of the frame-surrounding structure, wherein the first lateral side will be firstly contacted with a water surface when the cofferdam is placed in water.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a cofferdam assembly method. technical background [0002] In the process of bridge construction, it is often encountered that the riverbed is weathered limestone with no covering layer and has high strength. It is difficult to effectively insert steel pipe piles and steel casings into the riverbed for anchoring by conventional construction methods. Bottom cofferdam construction technology. The bored pile construction scheme of lowering the bottomless cofferdam first and embedding the steel casing with the bottom-sealing concrete can effectively solve the problems of erecting the drilling platform and anchoring the footing. Among them, the cofferdam is a frame-enclosed structure with no cover and bottom made of various shapes of steel. [0003] For the plan of cofferdam processing and launching, the following methods are usually used: put the cofferdam horizontally at the lau...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a method for assembling a cofferdam, which is used to solve the side-lying floating transportation of some cofferdams with insufficient buoyancy in the prior art. The draft of the cofferdam is greater than the minimum depth in the channel. Caused the cofferdam to run aground during the floating process, making it impossible for the cofferdam to reach the construction site safely

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