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2021 Vol.37, Issue 12
Hazard-Consistent Ground Displacement Estimation for Seismic Input of Underground Utility Tunnels in Korea

국내 재해도에 상응하는 공동구의 지반변위 산정

Dae-Hwan Kim1
,
Youngwoo Lim2
,
Yon-Ha Chung3
,
Hyerin Lee4*
김 대환1
,
임 영우2
,
정 연하3
,
이 혜린4*
1Member, Vice President, Nabih Youssef & Associates
2Senior Researcher, R&D Center, Hamil EnC Inc.
3Senior Researcher, KIT Valley Inc.
4Member, Research Prof., School of Civil and Environmental Engrg., Kookmin Univ.
1정회원, Nabih Youssef & Associates 부사장
2비회원, ㈜해밀EnC 부설연구소 선임연구원
3비회원, 케이아이티밸리㈜ 선임연구원
4정회원, 국민대학교 건설시스템공학부 전임연구교수
*Corresponding Author
31 December 2021. pp. 7-23
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Abstract

Underground utility tunnels, which contribute to supply of electricity, communication, water and heat, are critical lifelines of an urban area. In case service is discontinued or functional disruption happens, there will be a huge socio-economic impact. For the improved seismic design and evaluation of underground structures, this study proposes a ground displacement measure when the site is subjected to a scenario earthquake based on hazard-consistent source spectra and site amplification/attenuation. This measure provides a rational estimation of ground displacement and can be an alternative to existing response displacement methods.

Keywords
Generic soil model
Hazard-consistent ground displacement estimation
Poison process
Response displacement method
Site response analysis

전력, 통신, 상수, 난방, 중수 등의 공급망을 구성하는 지하공동구는 도시기능을 유지하기 위한 핵심 기간망이며, 재난 및 재해로 서비스의 정지 및 일시적 중단이 발생하는 경우 대규모 사회경제적 손실을 가져온다. 본 연구에서는 지중구조물에 대한 개선된 내진설계 및 평가를 위하여 국내 지진환경에 부합하는 지진원 스펙트럼으로부터 대상 지반의 증폭 및 감쇠 효과를 반영한 시나리오 지진에 기반한 지반변위 예측 방법을 제시하였다. 코사인법으로 통용되는 기존의 단순화 가정법 및 지반응답해석과의 비교를 통해서 본 연구가 제시하는 재해도에 상응하는 지반변위 산정 방법이 합리적이며 공학 실무에서 충분히 적용 가능한 것을 확인하였다.

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Information
  • Publisher :The Korean Geotechnical Society
  • Publisher(Ko) :한국지반공학회
  • Journal Title :Journal of the Korean Geotechnical Society
  • Journal Title(Ko) :한국지반공학회 논문집
  • Volume : 37
  • No :12
  • Pages :7-23
  • Received Date : 2021-10-20
  • Revised Date : 2021-11-18
  • Accepted Date : 2021-11-18
  • DOI :https://doi.org/10.7843/kgs.2021.37.12.7
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