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Bottom Compartment for Bottom Sealing of Underwater Sub-cabin of Large Cofferdam and Construction Method of Sub-cabin Bottom Cover

A construction method and bottom compartment technology, which are applied in infrastructure engineering, construction, etc., can solve problems such as inability to apply large-scale cofferdam, bottom compartment, subdivision, and bottom sealing, self-heavy cofferdam at the bottom section, and difficulty in lowering the cofferdam. Simple structure, good construction quality and good sealing effect

Pending Publication Date: 2018-06-05
CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there are the following defects in the subdivision and bottom sealing of bottom compartments in the prior art: the bottom section cofferdam has a relatively large dead weight; for steel casing cofferdams, it is difficult to lower the cofferdam due to the frictional resistance of the bottom compartment; The cabin is manufactured together with the cofferdam and sinks, and the bottom compartment needs to avoid the steel casing, so the span is large and the structure is relatively complicated
[0004] Due to the above defects, the subdivision of the bottom compartment is only suitable for foundation construction with a small cap area. However, with the development of bridge construction technology, more and more large-scale deep foundation pit foundation construction also uses steel sheet piles and steel pipes. Pile cofferdam, the above method of bottom compartment subdivision and bottom sealing can no longer be applied to large cofferdam bottom compartment subdivision and bottom sealing

Method used

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  • Bottom Compartment for Bottom Sealing of Underwater Sub-cabin of Large Cofferdam and Construction Method of Sub-cabin Bottom Cover
  • Bottom Compartment for Bottom Sealing of Underwater Sub-cabin of Large Cofferdam and Construction Method of Sub-cabin Bottom Cover
  • Bottom Compartment for Bottom Sealing of Underwater Sub-cabin of Large Cofferdam and Construction Method of Sub-cabin Bottom Cover

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Embodiment Construction

[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0038] An embodiment of the present invention provides a construction method for underwater subdivision and bottom sealing of a large cofferdam, including steps:

[0039] The bottom compartment 2 is prefabricated in blocks, the bottom compartment 2 is assembled from at least two compartment sections 2a, the compartment section 2a includes a truss 20, and at least one side of the truss 20 is provided with a panel 21;

[0040] After the cofferdam 1 is lowered into place, the two compartment sections 2a are lowered in sequence, the two compartment sections 2a are moved to the set position, and the two panels 21 are sealed and connected, so that all the panels 21 can form a sealed dividing surface, and The compartment section 2a is attached to the inner wall of the cofferdam 1, so that the bottom compartment 2 divides the cofferdam 1 into two inde...

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Abstract

The invention discloses a bottom compartment for bottom sealing of an underwater sub-cabin of a large cofferdam, which relates to the technical field of bridge construction, it is used to separate thecofferdam and seal the bottom, it is characterized that the bottom compartment is composed of at least two compartments, the bulkhead section comprises a truss, at least one side of the truss is provided with a panel, the two panels are sealed and connected, and all the panels can enclose a sealed dividing surface. The bottom compartment for the bottom sealing of the underwater sub-cabin of the large cofferdam provided by the invention is provided with a plurality of bay sections, the structure is simple, the dead weight of each bay section is small, the lowering is convenient, and the cofferdam can be applied to the bottom sealing of the underwater sub-cabin of the large cofferdam and has better construction quality.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a construction method for a bottom compartment and sub-compartment bottom sealing for underwater subdivision of a large cofferdam. Background technique [0002] The bottom sealing of large double-wall steel cofferdams is often carried out by subdivision of the cofferdam with its own bottom compartment. For steel sheet piles or steel pipe pile cofferdams, the method of one-time bottom sealing is often used. The existing large-scale double-wall steel cofferdams are usually sealed with bottom compartment subdivision. Not only is the quality of the bottom concrete construction easy to ensure, but also the one-time investment in the subdivision of the bottom concrete is less. Therefore, the construction method of subdividing the bottom of the bottom compartment is widely used. [0003] However, in the prior art bottom compartment subdivision and bottom sealing, there are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/04
CPCE02D19/04
Inventor 张春新胡军胡海波潘东发赵全成陶建山杨文明王寅峰李鹏马涛张爱花毛伟琦涂满明
Owner CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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