Seismic Risk Analysis of Structural Systemsby Armen Der Kiureghian, (A.M.ASCE), Assoc. Prof. of Civ. Engrg.; Univ. of California at Berkeley, Berkeley, Calif.,
Serial Information: Journal of the Engineering Mechanics Division, 1981, Vol. 107, Issue 6, Pg. 1133-1153
Document Type: Journal Paper
Errata: (See full record)
A methodology for reliability assessment of structural systems subjected to seismic risk is developed. Based on modern concepts of structural reliability theory, structural safety against earthquakes is described through a performance function of ground motion variables. A multivariate risk analysis is then performed to compute the failure probability. The method can be applied to any type of structural system for which a performance function can be formulated. A specific application to linear structures using the response spectrum of ground motion is developed where the performance function is shown to be of quadratic form in terms of spectral ordinates. This application is illustrated through a numerical example for a two-degree-of-freedom structure with multiple failure modes. The example is also used to examine the accuracy of a conventional method that uses marginal probabilities to approximate a joint distribution.
Subject Headings: Structural systems | Seismic effects | System analysis | Risk management | Structural analysis | Seismic tests | Structural reliability | Ground motion | Structural safety | Earthquake resistant structures | Failure analysis
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