Title:
REINFORCEMENT STRUCTURE FOR ENTRY AND EXIT OF LARGE-DIAMETER JACKING PIPE GROUP IN WATER-RICH SAND STRATUM, AND CONSTRUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2022/100346
Kind Code:
A1
Abstract:
A reinforcement structure for entry and exit of a large-diameter jacking pipe group in a water-rich sand stratum, and a construction method. The structure comprises underground diaphragm walls (2) and high-pressure jet grouting piles (5); the underground diaphragm walls (2) are arranged at edge positions of a launch shaft (9) and a reception shaft (10); the depths of the underground diaphragm walls (2) are below a bottom elevation of a pipe jacking machine; bored piles (4) are provided at the middles on the insides of the launch shaft (9) and the reception shaft (10); the depths of the bored piles (4) are the same as those of the underground diaphragm walls (2); cross braces (3) are used between the underground diaphragm walls (2) for support; the cross braces (3) are fixedly connected to the bored piles (4); the high-pressure jet grouting piles (5) are provided at the entry and exit of a jacking pipe group and the outside of the underground diaphragm walls (2); the high-pressure jet grouting piles (5) are arranged in row-shaped structure engaged in a quincuncial manner, and are arranged in parallel with the underground diaphragm walls (2). By performing reinforcement treatment on the entry and exit of a large-diameter jacking pipe group, the reinforcement efficiency of entry and exit openings is improved, machining process steps are simplified, and the quality of stratum reinforcement is improved, and construction difficulty and construction costs are reduced.
Inventors:
YANG JUNFENG (CN)
AN GANGJIAN (CN)
YU SHIXIANG (CN)
YUAN ZHENGPU (CN)
CAO GUANGYONG (CN)
YANG ZUBING (CN)
LIN JIAN (CN)
ZHAN JIE (CN)
WO YUNZHOU (CN)
WANG WEICHAO (CN)
DENG WENJIE (CN)
ZHANG TING (CN)
AN GANGJIAN (CN)
YU SHIXIANG (CN)
YUAN ZHENGPU (CN)
CAO GUANGYONG (CN)
YANG ZUBING (CN)
LIN JIAN (CN)
ZHAN JIE (CN)
WO YUNZHOU (CN)
WANG WEICHAO (CN)
DENG WENJIE (CN)
ZHANG TING (CN)
Application Number:
PCT/CN2021/123555
Publication Date:
May 19, 2022
Filing Date:
October 13, 2021
Export Citation:
Assignee:
4TH ENG CO LTD CTCE GROUP (CN)
CHINA TIESIJU CIVIL ENG GROUP (CN)
UNIV ANHUI JIANZHU (CN)
CHINA TIESIJU CIVIL ENG GROUP (CN)
UNIV ANHUI JIANZHU (CN)
International Classes:
E21D9/14; E21D11/00; E21D11/10; E21D11/38
Foreign References:
| CN112253162A | 2021-01-22 | |||
| CN105041322A | 2015-11-11 | |||
| CN108612106A | 2018-10-02 | |||
| CN111794780A | 2020-10-20 | |||
| CN111810176A | 2020-10-23 | |||
| CN110206339A | 2019-09-06 | |||
| JP2012162877A | 2012-08-30 | |||
| KR20030065963A | 2003-08-09 |
Attorney, Agent or Firm:
HEFEI HAOSHENGDE PATENT AGENCY (GENERAL PARTNERSHIP) (CN)
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