Study on applicability of effective stress analysis considering large-strain liquefaction characteristics of sandy soils

抄録

The large strain liquefaction behavior was analyzed by focusing on the relationship between the normalized cumulative dissipated energy and the internal friction angle. As a result, the internal friction angle defined by the peak stress ratio showed a decreasing trend , and the decreasing trend became more significant with decreasing D_r. A single-element liquefaction simulation was performed using an effective stress analysis method based on finite deformation theory that incorporates the decreasing trend of f . As a result, the employed effective stress analysis method was able to simulate the liquefaction behavior up to the large strain level which is difficult to perform with conventional methods.