Reliability Analysis of Caisson Type Quay wall Considering Phase Difference of Seismic Earth-Pressure

지진토압의 위상차를 고려한 케이슨 안벽의 신뢰성해석

  • 김동현 (한국해양연구원 연안ㆍ항만공학연구본부) ;
  • 윤길림 (한국해양연구원 연안ㆍ항만공학연구본부) ;
  • 박우선 (한국해양연구원 연안ㆍ항만공학연구본부)
  • Published : 2003.12.01

Abstract

For reliability analysis of caisson type quay walls, an approach to include the phase difference between the caisson motion and the dynamic earth pressure is proposed. Present approach. which uses the phase difference parameter, may over-estimate earth pressure. But the proposed approach considers the phase angle instead of the phase difference in estimating resultant external load. Therefore. it is more reasonable than the previous one. Accordingly, calculation of probability of failure becomes more accurate. Numerical example is used to compare the two approaches.

안벽구조물로 널리 쓰이는 케이슨구조의 신뢰성설계를 위한 위상각 고려방법을 제안하였다. 기존의 방법에서는 위상차를 고려하였기 때문에 토압의 합력이 물리적으로 발생 가능한 이상의 값이 산출되어 파괴확률이 과다 평가되는 문제가 발생하지만 제안방법은 위상각을 고려하기 때문에 토압합력의 합리적인 산정이 가능하며 결과적으로 파괴확률 산정의 정확도를 높일 수 있게 되었다. 실규모의 케이슨 설계사례를 통해 기존방법과 제안방법에 의한 신뢰성해석 결과를 수치적으로 비교 평가하였다.

Keywords

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