Geomechanics and Engineering

  • 제32권2호
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  • Pages.179-191
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  • 2023
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Experimental investigation of earth pressure on retaining wall and ground settlement subjected to tunneling in confined space

  • Jinyuan, Wang (School of Civil Engineering and Architecture, Wuhan University of Technology) ;
  • Wenjun, Li (China Harbour Engineering Company Ltd.) ;
  • Rui, Rui (School of Civil Engineering and Architecture, Wuhan University of Technology) ;
  • Yuxin, Zhai (China Railway Construction Group Co., Ltd.) ;
  • Qing, He (China Fortune Land Development Co., Ltd.)
  • 투고 : 2021.09.03
  • 심사 : 2023.01.06
  • 발행 : 2023.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

To study the influences of tunneling on the earth pressure and ground settlement when the tunnel passes through the adjacent underground retaining structure, 30 two-dimensional model tests were carried out taking into account the ratios of tunnel excavation depth (H) to lateral width (w), excavation width (B), and excavation distance using a custom-made test device and an analogical soil. Tunnel crossing adjacent existing retaining structure (TCE) and tunnel crossing adjacent newly-built retaining structure (TCN) were simulated and the earth pressure variations and ground settlement distribution during excavation were analyzed. For TCE condition, the earth pressure increments, maximum ground settlement and the curvature of the ground settlement curve are negatively related to H/B, but positively related to H/s and H/w. For TCN condition, most trends are consistent with TCE except that the earth pressure increments and the curvature of ground settlement curve are negatively related to H/w. The maximum ground settlement is larger than that observed in tunnel crossing the existing underground structure. This study provides an assessment basis for the design and construction under confined space conditions.

키워드

과제정보

The research described in this paper was financially supported by the National Natural Science Foundation of China (No. 51909192).

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