Abstract
After the 2011 Off the Pacific Coast of Tohoku Earthquake in Japan, it was found that liquefaction can appear at multiple times in the same sites. This issue created a great concern about the reoccurrence of multiple-liquefaction in the future earthquakes. In this study, a series of cyclic simple shear tests was performed on dry Toyoura sand while keeping the specimen volume constant using a stacked-ring shear apparatus. In order to study the behavior of multiple-liquefaction under small to large strain levels, the same specimen was sheared at different levels of maximum shear strain double amplitude on each liquefaction stage. In addition, in order to investigate how the occurrence of previous liquefaction may affect the soil behavior during future liquefaction stages, an analysis based on dissipated energy was conducted.
