Site-and soil-specific PSHA for nonlinear soil sites

摘要

This paper presents two applications of a Probabilistic senismic Hazard analysis (PSHA) methodology which is both site-and soil-specific. The ground motion hazard is evaluated at the surface either by oscillator-frequency-denendent hazard curves for spectral acceleration, S_a~w(f), or by acceleration unifom hazard spectra associated with a given mean return period. The soil response is represented statistically via multiple nonlinear dynamic analyses of the soil column with uncertain prpperties.