Geomechanics and Engineering

  • 제15권2호
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  • Pages.775-781
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  • 2018
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Seismic responses of a metro tunnel in a ground fissure site

  • Liu, Nina (School of Geological Engineering and Geomatics, Chang'an University) ;
  • Huang, Qiang-Bing (School of Geological Engineering and Geomatics, Chang'an University) ;
  • Fan, Wen (School of Geological Engineering and Geomatics, Chang'an University) ;
  • Ma, Yu-Jie (Xi'an China Highway Geotechnical Engineering Co., Ltd) ;
  • Peng, Jian-Bing (School of Geological Engineering and Geomatics, Chang'an University)
  • 투고 : 2017.05.27
  • 심사 : 2017.12.05
  • 발행 : 2018.06.10
⟨ 이전 논문 다음 논문 ⟩

초록

Shake table tests were conducted on scaled tunnel model to investigate the mechanism and effect of seismic loadings on horseshoe scaled tunnel model in ground fissure site. Key technical details of the experimental test were set up, including similarity relations, boundary conditions, sensor layout, modelling methods were presented. Synthetic waves and El Centro waves were adopted as the input earthquake waves. Results measured from hanging wall and foot wall were compared and analyzed. It is found that the seismic loadings increased the subsidence of hanging wall and lead to the appearance and propagation of cracks. The values of acceleration, earth pressure and strain were greater in the hanging wall than those in the foot wall. The tunnel exhibited the greatest earth pressure on right and left arches, however, the earth pressure on the crown of arch is the second largest and the inverted arch has the least earth pressure in the same tunnel section. Therefore, the effect of the hanging wall on the seismic performance of metro tunnel in earth fissure ground should be considered in the seismic design.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China, Chang’an University

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피인용 문헌

  1. Dynamic Characteristics of Metro Tunnel Closely Parallel to a Ground Fissure vol.2019, pp.None, 2018, https://doi.org/10.1155/2019/6450853
  2. Seismic response of utility tunnels subjected to different earthquake excitations vol.24, pp.1, 2021, https://doi.org/10.12989/gae.2021.24.1.067
  3. A Study on the Dynamic Behavior of a Vertical Tunnel Shaft Embedded in Liquefiable Ground during Earthquakes vol.11, pp.4, 2021, https://doi.org/10.3390/app11041560
  4. Study on seismic response characteristics of full light-weight concrete prefabricated utility tunnels vol.21, pp.1, 2018, https://doi.org/10.12989/eas.2021.21.1.051