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Seismic Ground Motions for Lifeline Analysis

by L. L. Hong, Univ of Illinois at Urbana-Champaign, United States,
A. H. -S. Ang, Univ of Illinois at Urbana-Champaign, United States,



Document Type: Proceeding Paper

Part of: Structural Safety and Reliability

Abstract:

The spatial variation of seismic ground motions necessary for lifeline analysis is determined from a stochastic source model combined with a substitute system representing the equivalent transmission effect. The transfer function of the system is developed through system identification using the results of a three-dimensional wave propagation model. With the resulting transfer function of the system and the given power spectral density at the source, the power spectral density of differential ground motions can be estimated, and then used for lifeline analysis.

Subject Headings: Ground motion | Power spectral density | Lifeline systems | Three-dimensional models | Stochastic processes | Seismic waves | Seismic tests

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