Demoulding structure of steel casing for bored pile at deepwater area

Abstract

The invention specifically discloses a demoulding structure of a steel casing for a bored pile at a deepwater area. The demoulding structure comprises a steel casing and a demoulding layer comprising wood templates fully spread on the inner wall of the steel casing, and films fully spread on the wood templates and pasted on the wood templates with underwater adhesive fully, and a clearance between the wood templates and the inner wall of the steel casing is 0 mm-10 mm. In the invention, the problem that the existing steel casing cannot be demoulded underwater is solved, the common templates, the films and other materials are adopted, not only the construction requirements can be met, but also the effect that the steel casing can be separated from an underwater pile-foundation after pile formation is achieved, so that the steel casing can be recycled, which has practical significance.

Description

technical field [0001] The invention relates to the technical field of underwater pile construction, in particular to a demoulding structure of a steel casing for bored piles in deep water areas. Background technique [0002] The steel casing plays a vital role in the construction of deep-water bored underwater piles, and determines the quality of the underwater piles. In the construction of underwater environments such as seas and rivers, the steel casing must pass through the silt covering layer of the sea and river bed, and be driven into a stable geological rock formation, and it must be ensured that the steel casing must not leak during the drilling process. Phenomenon of mud or reverse perforation. After the underwater concrete in the underwater pile is hardened, since the steel casing has been firmly bonded to the underwater concrete, and because the steel casing cannot be separated from the underwater pile, the steel casing will sleep forever underwater, not only A...

AI Technical Summary

Problems solved by technology

After the underwater concrete in the underwater pile is hardened, since the steel casing has been firmly bonded to the underwater concrete, and because the steel casing cannot be separated from the underwater pile, the steel casing will sleep forever underwater, not only Consumes a lot of steel, and even causes long-term groundwater pollution

[0003] For this reason, people are also gradually studying the technical means of how to recycle the steel casing for secondary use. problem, has not been well resolved

For example, after the underwater pile is formed, the underwater concrete in the steel casing is firmly bonded to the steel casing, so that it is impossible to separate the steel casing from the concrete; the length of the steel casing in deep water is too long , too heavy to achieve effective lifting, etc.

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