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

Korean Tunnelling and Underground Space Association (한국터널지하공간학회)
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Damage assessment of structures according to the excavation methods

굴착방법에 따른 구조물의 손상도 평가

  • Jeon, Jae-Hyun (Konkuk University, Dept. of Civil and Environmental System Engineering) ;
  • Park, Jong-Deok (Konkuk University, Dept. of Civil and Environmental System Engineering) ;
  • Lim, Young-Duck (KEPCO, Project Division, Transmission Project Department) ;
  • Lee, Seok-Won (Konkuk University, Dept. of Civil and Environmental System Engineering)
  • 전재현 (건국대학교, 사회환경시스템공학과) ;
  • 박종덕 (건국대학교, 사회환경시스템공학과) ;
  • 임영덕 (한국전력공사, 개발사업본부 송변전건설처) ;
  • 이석원 (건국대학교, 사회환경시스템공학과)
  • Received : 2013.03.20
  • Accepted : 2013.03.28
  • Published : 2013.03.28
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Abstract

When the ground is excavated near the pre-existing structures due to the region restricted condition such as urban area, the ground will be released by the excavation and the temporary wall will be deformed depending on the earth pressure. In this case, issues can be created in terms of stability of pre-existing structures. Firstly, the laboratory model tests were carried out to investigate the ground surface settlement due to the ground excavation according to the excavation methods in this study. Using the ground surface settlement results from model tests, numerical analyses were carried out to study the structure deformation due to the ground excavation according to the excavation methods. Finally, using the structure deformation results from numerical analysis, the damage assessment of structures was carried out by using the strain damage estimation criterion.

도심지와 같이 개발가능한 지역이 제한되어 있으면 기존 건물에 인접하여 지반을 굴착하는 경우가 종종 발생한다. 이러한 경우 지반은 이완되고 따라서 토압에 따라 가시설 벽체에 변형이 발생하므로 인접 구조물의 안정성에 문제가 발생할 수 있다. 따라서 본 연구에서는 실내 모형실험을 통하여 여러 가지 형태의 지반 굴착방법에 따른 인접 지반의 지표면 변위를 산정하고, 이를 수치해석에 적용하여 지표면 침하에 따른 구조물의 변형 양상을 연구하였다. 이렇게 얻어진 구조물 변형 형상 중에서 각 변위와 수평 변형율을 추출하여 최종적으로 인접 구조물의 손상 정도를 평가하였다.

Keywords

References

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