PILE-BOTTOM GROUTING CAVITY AND METHOD FOR USING SAME, AND CAST-IN-PLACE PILE BODY AND METHOD FOR CONSTRUCTING SAME

Title:

PILE-BOTTOM GROUTING CAVITY AND METHOD FOR USING SAME, AND CAST-IN-PLACE PILE BODY AND METHOD FOR CONSTRUCTING SAME

Document Type and Number:

WIPO Patent Application WO/2020/133992

Kind Code:

A1

Abstract:

Disclosed are a pile-bottom grouting cavity and a method for using same, and a cast-in-place pile body and a method for constructing same. The pile-bottom grouting cavity comprises: a grouting capsule, having an expansion state in which the grouting capsule is filled with grout to bear a pile body, and a contracted state in which the grouting capsule is hollow; a grouting pipe in communication with an inner cavity of the grouting capsule to grout the grouting capsule; and a fixing plate, with the grouting capsule being arranged on the fixing plate, and the fixing plate being provided with a through hole that is in communication with the bottom of an accommodation hole, such that slurry and/or sediment in the accommodation hole pass through the fixing plate. The aim thereof is to solve the problems in the prior art of hole wall collapse and excessive sediment that seriously affect the quality of construction in a grouting pile with a grouting capsule during the construction of a cast-in-place bored pile.

Inventors:

GAO YONGGUANG (CN)
GAO YUNFEI (CN)

Application Number:

PCT/CN2019/093599

Publication Date:

July 02, 2020

Filing Date:

June 28, 2019

Export Citation:

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Assignee:

GAO YONGGUANG (CN)
GAO YUNFEI (CN)

International Classes:

E02D5/62; E02D5/34

Foreign References:

CN109469050A	2019-03-15
CN109056716A	2018-12-21
CN106836179A	2017-06-13
CN103741683B	2015-11-18
CN108265720A	2018-07-10
CN108411920A	2018-08-17
JP2003171930A	2003-06-20
JP2001214438A	2001-08-07

Other References: