파랑작용에 의한 모래지반의 액상화에 관한 대형 수리모형실험

• Published in: Han-guk haeyang gonghak hoeji (Online) Vol. 21; no. 3; pp. 26 - 32
• Main Authors: 강윤구(YOON-KOO KANG), 스즈끼고지로(KOJIRO SUZUKI)
• Format: Journal Article
• Language: Korean
• Published: 한국해양공학회 2007
• Subjects: 해양공학; 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
• ISSN: 1225-0767; 2287-6715

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.