파랑작용에 의한 모래지반의 액상화에 관한 대형 수리모형실험
A series of large-scale experiments were carried out in order to examine wave-induced liquefaction in a loosely packed sandbed, its afterward high densification and liquefaction by oscillatory pore pressure. The experiments were conducted in a Large Hydro-Geo Flume that can nearly solve the problems...
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| Published in | Han-guk haeyang gonghak hoeji (Online) Vol. 21; no. 3; pp. 26 - 32 |
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| Main Authors | , |
| Format | Journal Article |
| Language | Korean |
| Published |
한국해양공학회
2007
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1225-0767 2287-6715 |
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| Abstract | A series of large-scale experiments were carried out in order to examine wave-induced liquefaction in a loosely packed sandbed, its afterward high densification and liquefaction by oscillatory pore pressure. The experiments were conducted in a Large Hydro-Geo Flume that can nearly solve the problems of scale effects of the sandbed, and the 50% sieve diameter of sand was 0.2 mm. The generation of residual pore pressure and its afterward high densification which had observed by Takahashi et al. (1999) in a wave flume experiment using fine sand with the size of 0.08 mm. As a result, the relative density of the sandbed after high densification was increased up to 79% and liquefaction by oscillatory pore pressure was not observed. |
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| AbstractList | A series of large-scale experiments were carried out in order to examine wave-induced liquefaction in a loosely packed sandbed, its afterward high densification and liquefaction by oscillatory pore pressure. The experiments were conducted in a Large Hydro-Geo Flume that can nearly solve the problems of scale effects of the sandbed, and the 50% sieve diameter of sand was 0.2 mm. The generation of residual pore pressure and its afterward high densification which had observed by Takahashi et al. (1999) in a wave flume experiment using fine sand with the size of 0.08 mm. As a result, the relative density of the sandbed after high densification was increased up to 79% and liquefaction by oscillatory pore pressure was not observed. A series of large-scale experiments were carried out in order to examine wave-induced liquefaction in a loosely packed sandbed, its afterward high densification and liquefaction by oscillatory pore pressure. The experiments were conducted in a Large Hydro-Geo Flume that can nearly solve the problems of scale effects of the sandbed, and the 50% sieve diameter of sand was 0.2 mm. The generation of residual pore pressure and its afterward high densification which had observed by Takahashi et al. (1999) in a wave flume experiment using fine sand with the size of 0.08 mm. As a result, the relative density of the sandbed after high densification was increased up to 79% and liquefaction by oscillatory pore pressure was not observed.최근들어 매년 만성적으로 되풀이되고 있는 적조발생 등 환경악화와 이에 따른 수산 어획량 감소 등 많은 환경문제가 야기되고 있다. 이에 대한 원인 중의 하나가 연안역 개발에 따른 갯벌 및 천해역 매립에 있다는 인식과 함께 갯벌 보전과 창출(인공갯벌의 조성)에 대한 사회적인 요구가 강하게 고조되고 있다. 특히 갯벌과 천해역을 인공적으로 조성하는 방안이 대안으로 떠오르고 있지만, 인공적으로 조성시 나타날 수 있는 문제점에 대해서는 아직 구체적인 논의가 이루어지지 않고 있다.갯벌 및 천해역을 인공적으로 조성할 경우 이들 지반은 일반적으로 느슨한 상태로 조성되며, 조성후 파랑작용을 받을 경우 지진시에 발생하는 현상과 비슷한 잔류간극수압의 발생을 동반한 대규모의 액상화가 발생할 가능성이 높다. 또한 이러한 지반 부근에 구조물을 설치한 경우에는 구조물이 파랑에 의한 액상화로 인해 대규모의 파괴로 이어질 수 있다. KCI Citation Count: 0 |
| Author | 강윤구(YOON-KOO KANG) 스즈끼고지로(KOJIRO SUZUKI) |
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| DocumentTitleAlternate | Large-Scale Experiments on the Wave-Induced Liquefaction of Sandbed |
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| Keywords | Densification 고밀도화 Oscillatory pore pressure 변동간극수압 Wave-induced liquefaction 파랑에 의한 지반 액상화 Large-scale experiments 대형 수리실험 Residual pore pressure 잔류간극수압 Shear strain 전단 변형율 |
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| Title | 파랑작용에 의한 모래지반의 액상화에 관한 대형 수리모형실험 |
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