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Construction method of karst geological cast-in-place piles

A construction method and cast-in-place pile technology are applied in sheet pile walls, foundation structure engineering, construction, etc. to achieve the effects of easy disassembly, improved stability, and easy stress.

Inactive Publication Date: 2020-04-03
ZHEJIANG UNIV CITY COLLEGE
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

At present, there are no related invention patents on how to treat various types of karst caves on the side of cast-in-place piles

Method used

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  • Construction method of karst geological cast-in-place piles
  • Construction method of karst geological cast-in-place piles
  • Construction method of karst geological cast-in-place piles

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Embodiment Construction

[0041] The present invention will be further described below in conjunction with the examples. The description of the following examples is provided only to aid the understanding of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0042] The construction method of the karst geological filling pile comprises the following steps:

[0043] (1) Carry out surveying and setting out and pile hole positioning according to the advanced geological forecast.

[0044] (2), excavate the earthwork of the first section pile hole, and pour the standard section retaining wall 28 . The excavation depth is 1m. First excavate the earthwork in the middle of the pile hole, then expand the excavation to the per...

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Abstract

The invention relates to a construction method of karst geological cast-in-place piles. The construction method comprises the following steps: (1) performing survey and setting out, and positioning piles; (2) carrying out a first section of earth excavation, and pouring retaining walls; (3) repeatedly excavating earth, and constructing the retaining walls to small karst caves; (4) arranging smallkarst cave reinforcement frames, and assembling fabricated retaining walls; (5) pouring and filling cavities of the small karst caves; (6) repeatedly excavating earth, and constructing retaining wallsto large karst caves; (7) assembling and supporting retaining wall steel moulds; (8) pouring large karst cave section retaining walls; (9) continuously excavating earth, and constructing the retaining walls till the design depth is reached; and (10) hoisting and placing reinforcement cages, and pouring concrete to form the piles. The construction method has the advantages that assembled precast slabs in the construction method are prefabricated in a factory and transported to a site for assembly, so that the construction efficiency is greatly improved, a construction period is shortened, andthe technical benefit is remarkable. The built-in reinforcement frames and cavity pouring and filling structures in the karst caves according to the construction method can improve the overall stability of the karst caves, so that the stability of pile foundations at the karst caves is improved.

Description

technical field [0001] The invention relates to the field of pile foundation engineering, in particular to a construction method for karst geological filling piles. Background technique [0002] my country's karst geology is mainly distributed in the three provinces of Yunnan, Guizhou, Sichuan, Guangdong, Guangxi, and Lianghu. With the rapid development of my country's economy and the in-depth implementation of the western development strategy, the infrastructure construction in the above-mentioned areas has been continuously increased. Large-scale civil and public The construction is planned and constructed one after another, and a large number of engineering problems caused by karst geology need to be dealt with. During the construction of cast-in-situ piles in the above-mentioned areas, the probability of encountering karst with different shapes and sizes and different hazards is extremely high. Therefore, how to deal with small and large karst caves on the pile side durin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/38
CPCE02D5/38
Inventor 王新泉刁红国税伟谢勇冉利春
Owner ZHEJIANG UNIV CITY COLLEGE
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