Earthquakes and Structures

  • 제24권1호
  • /
  • Pages.65-79
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  • 2023
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Simplified analytical solution of tunnel cross section under oblique incident SH wave in layered ground

  • Huifang, Li (School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture) ;
  • Mi, Zhao (Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology) ;
  • Jingqi, Huang (Beijing Key Laboratory of Urban Underground Space Engineering, School of Civil and Resource Engineering, University of Science and Technology Beijing) ;
  • Weizhang, Liao (School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture) ;
  • Chao, Ma (School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture)
  • 투고 : 2022.10.17
  • 심사 : 2023.01.12
  • 발행 : 2023.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

A simplified analytical solution for seismic response of tunnel cross section in horizontally layered ground subjected to oblique incidence of SH wave is deduced in this paper. The proposed analytical solution consists of two main steps: free-field response in layered field and tunnel response. The free field responses of the layered ground are obtained by one-dimensional finite element method in time domain. The tunnel lining is treated as a thick-wall cylinder to calculate the tunnel response, which subject to free field stress. The analytical solutions are verified by comparing with the dynamic numerical results of two-dimensional ground-lining interaction analysis under earthquake in some common situations, which have a good agreement. Then, the appropriate range of the proposed analytical solution is analyzed, considering the height of the layered ground, the wavelength and incident angle of SH wave. Finally, by using the analytical solutions, the effects of the ground material, burial depth of the tunnel, and lining thickness and the slippage effect at the ground-lining interface on the seismic response of tunnels are investigated. The proposed solution could serve as a useful tool for seismic analysis and design of tunnels in layered ground.

키워드

과제정보

This research was supported by National key research and development program (2022YFC3003603, 2022YFC3004304), National Natural Science Foundation of China (52278476, 51878028), Natural Science Foundation of Beijing Municipality (8222015, 8212007) and Young Teachers' Research Ability Improvement Plan of Beijing University of Civil Engineering and Architecture (X22007). The support is gratefully acknowledged.

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