PROPOSAL OF SIMPLIFIED STRONG GROUND MOTION PREDICTION METHOD FOR SYNTHETIC PROCEDURE USING FAULT MODEL REFLECTING NONLINEAR SITE EFFECT

Abstract

 Strong ground motion prediction methods using fault model such as empirical Green's function method and stochastic Green's function method overestimate high-frequency strong ground motion on the soft soil deposit. We have already proposed a method that combines non-linear earthquake response analysis with empirical Green's function method. Here, we developed a simple procedure to evaluate response spectrum from the nonlinear site effect using AVS30 of the corresponding site and synthesized response spectrum by the empirical Green's function method. This proposed method has been verified by reproducing recordings with nonlinear response characteristics.