Evaluation method of seismic shear stress considering earthquake motion characteristics and non-linear site response characteristics

Abstract

In the current assessment method of liquefaction based on F_L, reduction factor of the seismic shear stress ratio r_d is given as a function only for depth from ground surface. However, it is known that the seismic shear stress is dependent on the earthquake motion characteristic and non-linear site response characteristics. In this study, the method of evaluating the reduction factor r_d of seismic shear stress is newly proposed from strong motion record. The tendency of the seismic shear stress which occurs in the actual ground can be reflected on the assessment method of liquefaction by applying the proposed method to a large amount of strong motion record.