RESEARCH ON INTENSITY MEASURES OF SIMULATED SPATIAL VARIATION EARTHQUAKE GROUND MOTIONS

The response spectral acceleration of single degree-of-freedom elastic oscillator on rigid mat foundation which is subjected to spatial variation earthquake ground motions was used as the intensity measure of simulating the spatial variation earthquake ground motions. To observe the applicability of the proposed intensity measure, the simulated ground motion records database and a simple structural model were established and the incremental dynamic analysis method was adopted. The results of research show that the proposed intensity measure is applicable for structural probabilistic response hazard analysis based on intensity measure of the ground motion.