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3-Dimentional numerical study on dynamic behavior of connection between vertical shaft and tunnel under earthquake loading

3차원 수치해석을 이용한 지진 시 수직구-터널 접속부 동적 거동 분석

  • 김정태 (한국과학기술원 건설 및 환경공학과) ;
  • 조계춘 (한국과학기술원 건설 및 환경공학과) ;
  • 강석준 (한국과학기술원 건설 및 환경공학과) ;
  • 김기중 ((주)세니츠 코퍼레이션) ;
  • 홍은수 (한국과학기술원 건설 및 환경공학과)
  • Received : 2018.07.24
  • Accepted : 2018.08.22
  • Published : 2018.09.30

Abstract

3D time history analysis was performed on vertical shaft-tunnel connection to provide insight into the dynamic stress-strain behavior of the connection considering the effects of soil layers, periodic characteristics and wave direction of earthquakes. MIDAS GTS NX based on FEM (Finite Element Method) was used for this study. From this study, it is revealed that the maximum displacement occurred at the upper part of the connection when the long period seismic waves propagate through the tunnel direction in soft ground. Also, stress concentration occurs due to different behaviors of vertical shaft and tunnel, and the stress concentration could be influence for safety on the connection. The results of this study could be useful for the seismic performance design of vertical shaft-tunnel connection.

Acknowledgement

Grant : 도심지 소단면(

Supported by : 국토교통과학기술진흥원

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