EFFECTS OF ANISOTROPY CAUSED BY SEDIMENTATION DIRECTION ON WAVE-INDUCED LIQUEFACTION OF SANDBEDS

Abstract

 Horizontal ground with different deposition directions were prepared and wave loading tests were carried out in a channel in a centrifugal loading device. As a result, the ground with a 30° deposition angle to the wave direction led to liquefaction relatively quickly. Soils with 0° and 150° sedimentation directions showed similar excess pore pressure accumulation rates. Next, the experimental results are ware simulated by using a strain space multiple mechanism model accounting for initial structural anisotropy. In this study, the results of the analysis were investigated in detail, and the differences in liquefaction properties of the ground with different sedimentation directions were discussed.