Pile end post-grouting device, grouting method and construction method of CFG pile

The invention provides a pile end post-grouting device, grouting method and construction method of a CFG pile. The pile end post-grouting device comprises a grouting pipe column inserted in a pile body of the CFG pile, a grouting hole is formed in the end of the grouting pipe column, the grouting pi...

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Bibliographic Details
Main Authors LUO KAIHUAI, YANG HONGCHENG, HUANG FEI, WANG GUANGBO, YE WEI, PANG HAIFENG
Format Patent
LanguageChinese
English
Published 04.01.2022
Subjects
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
SOIL SHIFTING
UNDERGROUND OR UNDERWATER STRUCTURES
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Summary:The invention provides a pile end post-grouting device, grouting method and construction method of a CFG pile. The pile end post-grouting device comprises a grouting pipe column inserted in a pile body of the CFG pile, a grouting hole is formed in the end of the grouting pipe column, the grouting pipe column comprises a grouting pipe and a grouting pipe tail joint, the grouting pipe tail joint is arranged corresponding to the grouting hole, and the grouting pipe tail joint can plug the grouting hole according to the pipe pressure in the grouting pipe column. According to the technical scheme, when the current pipe pressure of the grouting pipe column is smaller than or equal to the preset pipe pressure, the grouting pipe tail joint can block the grouting hole. In this way, the situation that cement paste outside the grouting pipe column flows back into the grouting pipe column from the grouting hole is reduced, the possibility that the cement paste in the grouting pipe collapses the hole is also reduced, and
Bibliography:Application Number: CN202111250928