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Title:
PREFABRICATED PIPE PILE STRUCTURE HAVING VARIABLE-DIAMETER HOLES FOR SOFT FOUNDATION TREATMENT AND CONSTRUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/027664
Kind Code:
A1
Abstract:
A prefabricated pipe pile structure having variable-diameter holes for soft foundation treatment and a construction method therefor. A pipe pile wall (2) is provided with a plurality of pile body small holes (1), i.e., variable-diameter holes, having the hole diameters gradually increased from a pile top to a pile bottom in an axial direction of a pipe pile, so that excess pore water can be more rapidly discharged, and the pile sinking accident is prevented; an outer side of the pipe pile wall (2) is wrapped by geotextile (4), and the functions of reverse filter and water discharging of the geotextile (4) are utilized, so that excess pore water and gas in a soil body around the pile are discharged into a pipe cavity (3) in a pipe by means of pores of the geotextile (4), meanwhile, soil particles and the like are intercepted, the soil body is prevented from blocking the pile body small holes (1), stability of water and soil engineering within the range of the pile body small holes (1) can be kept, and water and soil losses in the local range are prevented.

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Inventors:
LIU JUN (CN)
WAN MENGHUA (CN)
ZHANG ZHENLI (CN)
CHENG BO (CN)
YANG ZHAOTING (CN)
SHEN XIANG (CN)
Application Number:
PCT/CN2020/107261
Publication Date:
February 18, 2021
Filing Date:
August 06, 2020
Export Citation:
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Assignee:
SHANGHAI CONSTRUCTION ENG SECOND CONSTRUCTION GROUP CO LTD (CN)
International Classes:
E02D3/08; E02D3/10; E02D5/66
Foreign References:
CN110397021A2019-11-01
CN211080198U2020-07-24
CN211080199U2020-07-24
CN211057765U2020-07-21
CN104846809A2015-08-19
CN208056052U2018-11-06
CN207739251U2018-08-17
CN208346812U2019-01-08
CN205276254U2016-06-01
KR20050018573A2005-02-23
JP2002322637A2002-11-08
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