Pile bottom post-grouting method

A post-grouting and pile-bottom technology, which is applied to sheet pile walls, buildings, and foundation structure engineering, can solve problems such as unsatisfactory construction effects, and achieve the effects of improving grouting effects, increasing strength, and increasing stiffness
CN100577924CInactive Publication Date: 2010-01-06JIANGSU NANTONG NO 2 CONSTR ENG GRP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU NANTONG NO 2 CONSTR ENG GRP
Publication Date
2010-01-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for post-grouting in the bottom of a pile, which comprises the following steps: in the process of constructing the pile by drilling holes, a grouting pipeline is prearranged in the bottom of the pile and grout is injected. The method has good grouting effect and high success rate of grouting.
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Description

Technical field:

[0001] The invention relates to a post-grouting method for bored cast-in-place piles. Background technique:

[0002] Post-pile grouting technology was first used in some soft soil foundation areas such as Shanghai, but its construction effect has been unsatisfactory, and the general grouting success rate is about 60%. Invention content:

[0003] The purpose of the present invention is to provide a post-grouting method at the pile bottom with good grouting effect and high grouting success rate.

[0004] Technical solution of the present invention is:

[0005] A post-grouting method at the bottom of a pile is characterized in that it comprises the following steps:

[0006] (1) During the construction of bored piles, pre-install the grouting pipeline at the bottom of the pile: the grouting device is fixedly connected with the grouting pipe, the grouting pipe is placed in the steel cage, and the iron wire and the steel cage are tied together. Together, it i...

Claims

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