Precise sinking limiting device and method for double-wall steel cofferdam in deep-water torrent river

Abstract

The invention belongs to the technical field of bridge construction, and discloses a precise sinking limiting device for a double-wall steel cofferdam in a deep-water torrent river. The precise sinking limiting device comprises a cantilever beam and a positioning pile, the cantilever beam is connected with a connecting rod, the connecting rod is connected with a supporting rod and a correcting bolt, the supporting rod is slidably provided with a measuring rod in a penetrating mode, the measuring rod is provided with a second spring in a penetrating mode, a guide column and a first spring are welded to the positioning pile, and a limiting cylinder is welded to the first spring. The invention discloses a precise sinking method for the double-wall steel cofferdam in the deep-water torrent river. The precise sinking method comprises the steps of S1, welding the connecting rods to cantilever beams of a construction platform; S2, S3, connecting the correcting bolt, the measuring rod and the second spring to the connecting rod; S4, lowering and adjusting the positioning pile; S5, welding the guide column and the first spring to the positioning pile, and welding the limiting cylinder to the free end of the first spring; and S7, sinking and adjusting the double-wall steel cofferdam. According to the precise sinking limiting device and method for the double-wall steel cofferdam in the deep-water torrent river, the problems that in the prior art, the double-wall steel cofferdam cannot precisely sink in deep water and deviation is difficult to rectify after deviation occurs are solved, and the method is suitable for sinking of the double-wall steel cofferdam in the deep-water torrent river.

Description

technical field [0001] The invention relates to the technical field of deep-water foundation construction of bridges, in particular to a precise sinking limiting device for a double-walled steel cofferdam in a deep-water rapids river, and also relates to a method for the precise sinking of a double-walled steel cofferdam in a deep-water rapids river. Background technique [0002] In recent years, with the continuous development of my country's transportation infrastructure construction, there are more and more bridges spanning large rivers. Steel cofferdams are usually used in the construction of bridge deep water foundations. Steel cofferdams are water retaining structures for caps. The cofferdam used can be divided into two types according to the structure: single-wall cofferdam and double-wall cofferdam. Among them, the double-wall steel cofferdam is used as the water-retaining peripheral structure of the deep-water bridge foundation. Good, can withstand large water pressur...

AI Technical Summary

Problems solved by technology

[0003] The present invention intends to provide a precise sinking and limiting device and method for a double-walled steel cofferdam in a deep-water torrent river, to solve the problems of the prior art that the double-walled steel cofferdam cannot sink accurately in deep water and is difficult to correct after deviation occurs. question

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