Hard cutting type construction method of secant pile in karst region

A construction method and technology of occlusal piles, applied to sheet pile walls, foundation structure engineering, buildings, etc., to achieve the effects of high overall rigidity, high construction efficiency, and short pile-forming time

Inactive Publication Date: 2018-10-09
CHINA RAILWAY ERJU 1ST ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a construction method of occlusal piles with hard cutting method in karst areas to solve many problems existing in the construction of occlusal piles in the old urban areas with karst development

Method used

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  • Hard cutting type construction method of secant pile in karst region
  • Hard cutting type construction method of secant pile in karst region

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Embodiment

[0024] Refer to attached figure 1 and 2 , this embodiment provides a hard-cut occlusal pile construction method in karst areas. The specific construction process is as follows: construction preparation - pile position setting - guide wall construction - drilling rig in place - drilling, ballasting - hole cleaning - hole forming inspection - Drilling rig shifting - Reinforcement skeleton placement - Preparation before concrete pouring - Concrete pouring - Pulling out casing - Pile head chisel cleaning - Pile body inspection - Crown beam construction.

[0025] Process principle: such as figure 1 As shown, rotary drilling is used to construct occlusal piles in karst areas by hard cutting, that is, A-sequence piles (C25 plain concrete piles) are constructed first, and B-sequence piles (C35 reinforced concrete piles) are constructed after the concrete of A-sequence piles is finally set. The plain concrete piles and reinforced concrete piles are interlocked to form the pile wall o...

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Abstract

The invention provides a hard cutting type construction method of a secant pile in a karst region, and belongs to the field of urban mass transit construction. The method specifically comprises the processes of preparing for constructing; paying off in pile positions; constructing a guide wall; arranging a drilling machine in place; drilling and removing ballast; cleaning a hole; examining the finished hole; displacing the drilling machine; arranging a reinforcement framework; pre-preparing for concrete pouring; pouring concrete; drawing out a sleeve; chiseling a pile head, and cleaning; detecting a pile body; and constructing a top beam, wherein pure concrete piles and reinforced concrete piles are sequentially alternatively arranged at the pile positions; the secant pile is constructed by the steps of sequentially constructing the pure concrete piles at regular intervals of every three concrete piles; sequentially constructing the rest pure concrete piles; sequentially constructing the reinforced concrete piles at regular intervals of every three concrete piles; and the constructing the rest reinforced concrete piles. With the adoption of the method, a plurality of problems in secant pile construction in karst developed old cities can be solved.

Description

technical field [0001] The invention relates to a construction method of an occlusal pile, which belongs to the field of urban rail transit construction. Background technique [0002] "Occlusion" means the mutual relationship between adjacent piles, using the seamless "occlusion" between piles to form a closed enclosure structure. [0003] In the old urban area where karst is developed, occlusal piles are used as the enclosure structure of the subway station. The surrounding traffic is developed, the buildings (structures) are dense, the supply of concrete is controlled or the traffic congestion can not be supplied in time, the karst is relatively developed, the construction site is narrow, Due to the complexity of the pipelines, the occlusal piles cannot be continuously operated, the construction at night disturbs the residents, and the construction cost is high. Contents of the invention [0004] The object of the present invention is to provide a hard-cut occlusal pile...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D7/00
Inventor 苏杰崔海军瞿国丽李启亮卢思维马宏川孔德华赵翔宇石正濡吴川疆
Owner CHINA RAILWAY ERJU 1ST ENG
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