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한국해안·해양공학회논문집 = Journal of Korean Society of Coastal and Ocean Engineers, v.26 no.1, 2014년, pp.49 - 64
이광호 (관동대학교 에너지자원플랜트공학과) , 백동진 (한국해양대학교 대학원 토목환경공학과) , 김도삼 (한국해양대학교 건설공학과) , 김태형 (한국해양대학교 건설공학과) , 배기성 (경상대학교 해양토목공학과)
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Seabed beneath and near the coastal structures may undergo large excess pore water pressure composed of oscillatory and residual components in the case of long durations of high wave loading. This excess pore water pressure may reduce effective stress and, consequently, the seabed may liquefy. If th...
| 핵심어 | 질문 | 논문에서 추출한 답변 |
|---|---|---|
| FLIP모델은 무엇인가? | FLIP모델은 다중전단메커니즘을 이용한 2차원유효응력의 유한요소해석모델(Iai et al., 1992a, 1992b)로, 이 모델에서는 원형고정경계를 Fig. | |
| 잔류과잉간극수압의 특징은? | 두 번째 메커니즘으로 잔류과 잉간극수압(residual pore water pressure)을 들 수 있으며, 이 는 반복하중하에서 흙의 수축에 의해 야기되는 과잉간극수압 의 축적으로 나타난다(Seed and Rahman, 1978; Sumer and Fredsøe, 2002). 이러한 잔류과잉간극수압은 파랑의 작용시간에 비례하여 축적되는 경향을 나타내므로 파랑조건과 해저지반의 특성에 따라 전술한 진동과잉간극수압보다 훨씬 큰 값을 나타내는 경우도 있고, 이로 인한 지반액상화는 지반저항력의 상실을 초래하여 상부구조물이 파괴될 가능성이 높아진다. | |
| FLIP모델에서 스프링이 나타내는 것은 무엇인가? | 3과 같은 전단변형영역과 무한개의 가상스프링경계의 연결로 정의되는 이동절점으로 나타낸다. 여기서, 각 스프링은 다양한 방향을 가지는 실제 단순전단메커니즘이라고 할 수 있고, 이는 지반에서 흙의 탄소성에 관한 응력-변형율관계를 잘 모사할 수 있다. |
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