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Title:
ANTI-LIQUEFACTION TREATMENT METHOD FOR HIGH-PERFORMANCE GRAVEL PILES OF EXISTING BUILDING FOUNDATIONS
Document Type and Number:
WIPO Patent Application WO/2021/000387
Kind Code:
A1
Abstract:
An anti-liquefaction treatment method for high-performance gravel piles of existing building foundations. First, excavating a trench (3) in the foundations (2) around an existing building (1) by means of small equipment; using spiral drill rods to lay out and construct a series of boreholes (4, 5) in the trench (3); filling the boreholes (4, 5) with gravel designed for permeability and reverse filter gradation, and then re-filling with another type of gravel with optimised gradation, the two constituting an inverse filter layer; finally, laying geotechnical cloth around the trench (3) and filling the trench (3) with graded gravel. The anti-liquefaction treatment method for high-performance gravel piles of existing building foundations is suitable for anti-liquefaction treatment of foundations of dense urban buildings, causes little disturbance to the foundations and the upper building construction, and has a simple construction process, high construction efficiency, easily available construction materials, low costs, and good long-term service performance.

Inventors:
ZHOU YANGUO (CN)
LIU KAI (CN)
MA QIANG (CN)
ZHOU XINHUI (CN)
Application Number:
CN2019/101572
Publication Date:
January 07, 2021
Filing Date:
August 20, 2019
Export Citation:
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Assignee:
UNIV ZHEJIANG (CN)
International Classes:
E02D31/00; E02D3/08
Foreign References:
CN207419441U2018-05-29
CN108642987A2018-10-12
CN104947651A2015-09-30
CN102888834A2013-01-23
CN109797764A2019-05-24
JP6424504B22018-11-21
JP2014148884A2014-08-21
Attorney, Agent or Firm:
HANGZHOU QIUSHI PATENT OFFICE CO., LTD. (CN)
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