Effects of ease of development of anisotropy on reliquefaction resistance

The authors have shown through earlier experimental studies using Toyoura siliceous sand that anisotropy varies with dizzying rapidity during liquefaction and that the resistance to subsequent liquefaction fluctuates drastically depending on the state of development of anisotropy at the end of the previous liquefaction. In the current study, similar experiments were performed using alluvial sand sampled from the Tikushi Plains. Comparison of the experimental results of the two types of sand specimens indicated that the ease of development of anisotropy during liquefaction depends on the sand specimen and that, as a result, fluctuation of the reliquefaction resistance is drastic in some sandy soils, but not so great in others.