臨海部埋立地盤の地震危険度の簡易推定法に関する研究

抄録

Seismic risk is often discussed with regard to the acceleration amplification characteristic. Taking the soft ground as such seen in the reclaimed land into account, however, acceleration tends not to be amplified because of the large shear stress in the ground under the very strong seismic motion. It implies that the acceleration amplification characteristic is not adequate for the indicator of seismic risk of the reclaimed land. Authors conducted series of earthquake response analyses in order to establish the simple estimation method of seismic risk of reclaimed land in view of the peak ground velocity. Schematic chart of seismic risk evaluation according to the mean S-wave velocities and peak incident acceleration is proposed.