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Title:
CONSTRUCTION METHOD USING INCLINED STEEL PIPE COMBINED STRUCTURE TO FORM FORCE BEARING BODY
Document Type and Number:
WIPO Patent Application WO/2020/233145
Kind Code:
A1
Abstract:
A construction method using an inclined steel pipe combined structure to form a force bearing body comprises the following steps: pushing a steel pipe pile into soil in an inclined manner to a predetermined depth, grout discharging holes I being distributed on a pipe body of the steel pipe pile; placing a grouting apparatus in the pipe body of the steel pipe pile, the grouting apparatus comprising a grouting pipe having multiple grout discharging holes II and an inflatable capsule unit connected to the grouting pipe, the inflatable capsule unit comprising a connection pipe body communicating with the grouting pipe and a capsule being provided on the connection pipe body; pressurizing the capsule to inflate same, such that the capsule conforms to an inner wall of the steel pipe pile to form a closed cavity; using the grouting pipe to inject grout into the closed cavity such that the grout flows out via the grout discharging holes I on the steel pipe pile to form a grout force bearing body; depressurizing the capsule to cause the capsule to contract and lifting same; and repeating the above steps so as to sequentially construct multiple grout force bearing bodies on an outer side of the steel pipe pile. The invention allows grouting to be performed at both an end portion of the inclined steel pipe and a side edge of the pipe body, and forms a reliable grout force bearing body.

Inventors:
GU HONG (CN)
WANG KEWEN (CN)
GUO XINGYU (CN)
CHEN HUI (CN)
Application Number:
PCT/CN2020/071445
Publication Date:
November 26, 2020
Filing Date:
January 10, 2020
Export Citation:
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Assignee:
SHANGHAI CHANGKAI GEOTECHNICAL ENG CO LTD (CN)
International Classes:
E02D5/28; E02D15/00; E02D17/04
Foreign References:
CN110172966A2019-08-27
CN103603335A2014-02-26
CN205134308U2016-04-06
CN104110036A2014-10-22
CN203939021U2014-11-12
CN202672153U2013-01-16
CN104895066A2015-09-09
JP2006125033A2006-05-18
JP2000154538A2000-06-06
Attorney, Agent or Firm:
SHANGHAI BRIDGE INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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