Nonstationary Risk Model with Geophysical Input

by Jean B. Savy, (A.M.ASCE), Research Assoc.; Dept. of Civ. Engrg., Massachusetts Inst. of Tech., Cambridge, Mass.; formerly, Post-Doctoral Research Affiliate, The John A. Blume Earthquake Engrg. Center, Stanford Univ., Stanford, Calif.,
David Boore, Geophysicist; U.S. Geological Survey, Menlo Park, Calif.; formerly, Prof. of Geophysics, Stanford Univ., Stanford, Calif.,
Haresh C. Shah, (M.ASCE), Prof. of Civ. Engrg.; Stanford Univ., Stanford, Calif.,

Serial Information: Journal of the Structural Division, 1980, Vol. 106, Issue 1, Pg. 145-163

Document Type: Journal Paper

Abstract: A geophysical model of ground-motion simulation is used to generate the statistics of the power spectral density (PSD) of the acceleration at the bedrock level of a site. A nonstationary Poisson model of occurrences is then developed to combine the effects of all the probable sources in the seismic zone of interest. The consistent probability PSD is computed as a basic design parameter. Consistent probability peak response spectra, rms response spectra, and pseudotime histories are also derived as design parameters. A numerical example is given for a site in southern California to demonstrate the applicability of the method.

Subject Headings: Risk management | Power spectral density | Response spectra | Parameters (statistics) | Probability | Numerical methods | Ground motion | Simulation models | North America | California | United States

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