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Large coin type compartment cofferdam and construction method

A cofferdam and coin technology, which is applied in the field of large-scale coin-type compartment cofferdam and construction, can solve the problems of high time and cost, and achieve the effects of reducing construction cost, good plugging effect, and preventing the cofferdam from floating

Pending Publication Date: 2018-12-07
CHINA GEZHOUBA GROUP NO 5 ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the deep-water foundation of large bridges on the Yangtze River is generally constructed with double-walled steel cofferdams. When the geological conditions are relatively complicated, the conventional method of constructing bored piles on the bedrock with insufficient thickness of the back cover is to carry out underwater blasting, which is time-consuming and expensive. very big

Method used

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  • Large coin type compartment cofferdam and construction method
  • Large coin type compartment cofferdam and construction method
  • Large coin type compartment cofferdam and construction method

Examples

Experimental program
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Effect test

Embodiment 1

[0036] see Figure 1-4 , a large-scale coin-type compartment cofferdam, which includes a cofferdam 1, a plurality of bottom compartment chutes 4 are evenly distributed and fixedly installed on the inner wall of the cofferdam 1, and the bottom compartment chute 4 is connected with the bottom compartment The four corners of the cabin 2 form a sliding fit, and enable the bottom compartment 2 to slide down to the bottom along the inner wall of the cofferdam 1; The bottom of the flashboard 12 of the flashboard assembly 8 stretches into the rock face foundation 9 of the elevation change. By adopting the cofferdam with the above structure, after the steel cofferdam is assembled section by section and placed in place, the inserting plate assembly 8 is lowered to solve the problem of uneven bedrock at the bottom of the cofferdam, thereby ensuring the water isolation effect of the cofferdam; The compartment chute is lowered to the bottom compartment. When the thickness of the bottom co...

Embodiment 2

[0046] The construction method of any one of the described large-scale coin type compartment cofferdams, it may further comprise the steps:

[0047] Step1: Sink the cofferdam 1;

[0048] Step2: After the cofferdam 1 sinks in place, lower the bottom compartment 2 to the bottom of the cofferdam 1 through the bottom compartment chute 4;

[0049] Step3: Install the plug board 12 of the plug board assembly on the outer wall of the cofferdam 1 through the cooperation between the plug board guide rail 11 and the limit angle plate 13, and install it from the bottom of the cofferdam 1 to the leaking water surface;

[0050] Step4: According to the cooperation between the cofferdam edge 103 of the cofferdam 1 and the rock surface foundation 9 of the elevation change, the inserting plate 12 is inserted into the interior of the rock surface foundation 9 along the inserting plate guide rail 11 by knocking, And then the bottom of the cofferdam 1 is blocked;

[0051] Step5: According to the c...

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Abstract

The invention provides a large coin type compartment cofferdam and a construction method. The large coin type compartment cofferdam comprises a cofferdam body, a plurality of bottom compartment sliding grooves are evenly distributed and fixedly installed in the inner wall of the cofferdam body, the bottom compartment sliding grooves and the four corners of a bottom compartment are in sliding fit,and the bottom compartment can downwards slide to the bottom of the cofferdam body along the inner wall of the cofferdam body. The outer wall of the cofferdam body is provided with an inserting plateassembly used for blocking the bottom of the cofferdam body. The bottom of an inserting plate of the inserting plate assembly stretches into an elevation changing rock surface foundation. The large coin type compartment cofferdam and the construction method are suitable for constructing large bridge deep water foundations in the Yangtze River, and the large coin type compartment cofferdam and theconstruction method are specially used for large construction devices used under the situations that the pebble geology exists, the bed rock is uneven, and the bottom seal concrete thickness space isinsufficient.

Description

technical field [0001] The invention belongs to the technical field of cofferdam construction in bridge construction, and in particular relates to a large coin type compartment cofferdam and a construction method. Background technique [0002] At present, the deep-water foundation of large bridges on the Yangtze River is generally constructed with double-walled steel cofferdams. When the geological conditions are relatively complicated, the conventional method of constructing bored piles on the bedrock with insufficient thickness of the back cover is to carry out underwater blasting, which is time-consuming and expensive. very big. Contents of the invention [0003] The purpose of the present invention is to provide a large-scale coin-type compartment cofferdam and its construction method, which are suitable for building large-scale bridge deep-water foundations on the Yangtze River, and are specially designed for large-scale bridges under the conditions of pebble geology,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/04
CPCE02D19/04
Inventor 刘雄黄胜春田明昱尹凌杰杨中军徐朝锐
Owner CHINA GEZHOUBA GROUP NO 5 ENG
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