Journal of Korean Tunnelling and Underground Space Association (한국터널지하공간학회 논문집)

Korean Tunnelling and Underground Space Association (한국터널지하공간학회)
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Seismic performance evaluation of existing road tunnels based on revised seismic design code

개정된 내진설계기준에 기반한 기존 도로 터널의 내진 성능 평가

  • Gyu-Phil Lee (Geotechnical Engineering Research Department, KICT) ;
  • Du-Hee Park (Dept. of Civil and Environmental Engineering, Hanyang University) ;
  • Ji-Eun Kang (Dept. of Civil and Environmental Engineering, Hanyang University)
  • 이규필 (한국건설기술연구원 지반연구본부) ;
  • 박두희 (한양대학교 건설환경공학과) ;
  • 강지은 (한양대학교 건설환경공학과)
  • Received : 2023.10.27
  • Accepted : 2023.11.14
  • Published : 2023.11.30
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Abstract

Because of a new seismic design code has been enacted in 2023, there is a need to evaluate whether the road tunnels in operation satisfies the requirements of the new code. Four tunnels that are considered to be most susceptible to damage. Time history analyses are performed to quantify their seismic performances. The input ground motions generated to fit both 2007 and 2023 codes are used to evaluate the effect of the motions on the calculated responses. The analyses show that all tunnels perform favorably and satisfies the requirements successfully. Therefore, retrofit or reinforcement are deemed as unnecessary.

2023년에 터널내진설계기준이 개정됨에 따라 운영 중인 터널의 성능의 요구 수준 만족 여부가 필요하게 되었다. 본 연구에서는 지진에 대한 안전성이 취약하다고 판단되는 4개의 터널에 대한 시간이력해석을 수행하여 이들의 내진성능을 평가하였다. 나아가 2007년 기준과 2023년 기준에 부합하는 지진파 적용 시 응답의 차이를 규명하였다. 평가 결과, 2023년 기준을 적용하는 경우 터널의 응답이 모두 증가하는 것으로 나타났다. 하지만 개정된 기준 적용 시에도 모든 터널은 소요 내진성능을 확보한 것으로 나타났다. 따라서 개정된 기준을 적용 시에도 보수 또는 보강은 불필요할 것으로 판단된다.

Keywords

Acknowledgement

본 연구는 한국연구재단 기초연구사업 중견연구(No. 2022R1A2C3003245)의 지원으로 수행되었습니다. 이에 감사드립니다.

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