Journal of the Korean Geotechnical Society (한국지반공학회논문집)

Korean Geotechnical Society (한국지반공학회)
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The Evaluation of Damage Behaviour of Adjacent Structures in Urban Excavation

도심지 흙막이 굴착시 인접구조물의 손상 평가연구

  • 김학문 (단국대학교 토목환경공학과) ;
  • 황의석 (단국대학교 토목환경공학과)
  • Published : 2003.12.01
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Abstract

Brick wall models with window opening, length 1.844m $\times$ height 0.6m, representing 2-story building was constructed on a scale of 1/10 of actual size of brick building for the investigation of damage mechanism. Six settlement troughs presenting six stages of excavation were simulated by Peck(1969) and O'Rourke et al.(1976) methods. The results from the model tests using Peck(1969) and O'Rourke et al.(1976) method indicated that angular distortion of brick wall by O'Rourke et at. method was 21% greater than that of Peck method. Horizontal displacement by O'Rourke et al.(1976) was 24% greater than that of Peck. When the degree of building damage for the O'Rourke et al. method of settlement trough is plotted on the damage level graph(Boscardin & Cording, 1989), damage level becomes much more severe than the level obtained by peck's method. Also, building stiffness and soil-structure interface are considered important factors of expressing building damage.

흙막이 지반굴착시 인접 구조물의 손상메카니즘을 규명하기 위하여 1.844m(길이)$\times$0.6m(높이)인 모형조적벽체를 실제의 1/10의 스케일로 모형화하였다. Peck(1969) 및 O'Rourke등(1976)이 제안한 지반침하량이 6단계에 걸쳐 모형실험에 적용되었다. Peck(1969)과 O'Rourke등(1976)의 방법을 적용한 모형실험결과, O'Rourke등(1976)에 의한 조적벽체의 각변위는 Peck(1969)의 각변위에 비해 21% 크게 나타났으며, 수평변위 또한 Peck(1969)에 의한 값보다 24% 크게 나타났다. O'Rourke등(1976)의 침하량이 적용된 경우의 건물손상 정도를 손상도표(Boscardin & Cording,1989)에 적용한 결과 Peck(1969) 방법에 의해 얻은 손상수준에 비해 보다 심각한 손상수준의 결과가 나타났다. 또한, 구조물의 강성 및 구조물과 지반의 interface 가 구조물 손상평가시 중요한 인자로써 고려되어야 함을 확인할 수 있었다.

Keywords

References

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