Steel sheet pile cofferdam constructing method

A technology of steel sheet pile cofferdam and construction method, which is applied to sheet pile walls, foundation structure engineering, construction, etc., can solve problems such as difficulty in construction, slow progress, and influence on project progress, and achieve the effect of improving construction quality
CN104294835AInactive Publication Date: 2015-01-21SINOHYDRO ENG BUREAU 4 +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SINOHYDRO ENG BUREAU 4
Publication Date
2015-01-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the technical field of cofferdam construction, particularly to a steel sheet pile cofferdam constructing method. The method comprises (1) preparation; (2) steel sheet pile plugging and driving including mounting a first support ring beam as a guide frame for pile plugging and driving, during the pile plugging and driving, enabling the backs of steel sheet piles to be close to the guide frame, slowly lowering a lifting hook over the pile plugging and driving to ensure alignment and straightness of the steel sheet piles; (3) steel sheet pile closure including closing the steel sheet piles in the plugging order from the surrounding sides to the four corners; (4) foundation pit digging including performing cap foundation pit earth digging through a high-front shovel, and sucking soil through a mud pump in a layered, partitioned and symmetric mode; (5) concrete ground sealing including performing ground-sealing concrete underwater filling on the bottom of the cofferdam; (6) steel sheet pile cofferdam support including, when the strength of underwater concrete reaches 75% of a design strength, pumping water to achieve wailing support construction.
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Description

technical field

[0001] The invention relates to the technical field of cofferdam construction, in particular to a steel sheet pile cofferdam construction method. Background technique

[0002] Sheet pile cofferdam is a commonly used sheet pile cofferdam. Steel sheet pile is a kind of section steel with lock. Its cross-section has straight plate shape, trough shape and Z shape, etc. There are various sizes and interlocking forms. The common ones are Larson type and Lackawanna type.

[0003] The advantages of steel sheet pile cofferdams are: high strength, easy to drive into hard soil layers; good waterproof performance, can be constructed in deep water; cofferdams of various shapes can be formed according to needs, and can be reused many times. Therefore, it has a wide range of uses.

[0004] However, during the construction of the steel sheet pile cofferdam, due to the geology and hydrology of the site where the project is located, as well as the material of the steel sheet...

Claims

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