Generation of response-spectrum-compatible ground motions based on first-passage theory considering non-stationary effect

Abstract

This study proposes a method of generating synthetic ground motions that fit the attenuation relationship of acceleration response spectrum, taking into account non-stationary effect. The authors previously proposed a method of generating ground motions based on stationary random process. This study develops our previous method so as to take into account non-stationary effect of ground motions incorporating a correction function that modify the calculated response spectrum for different types of earthquakes. The results shows that calculated response spectrum fits very well with the target response spectrum for various earthquakes of different magnitudes, focal depths and hypocentral distances.