Nonlinear Static Procedure for Fragility Curve Development
Publication: Journal of Engineering Mechanics
Volume 126, Issue 12
Abstract
This study examines the fragility curves of a bridge by two different analytical approaches; one utilizes the time-history analysis and the other uses the capacity spectrum method. The latter approach is one of the simplified nonlinear static procedures recently developed for buildings. In this respect, a sample of 10 nominally identical but statistically different bridges and 80 ground-motion time histories are considered to account for the uncertainties related to the structural capacity and ground motion, respectively. The comparison of fragility curves by the nonlinear static procedure with those by time-history analysis indicates that the agreement is excellent for the state of at least minor damage, but not as good for the state of major damage where nonlinear effects clearly play a crucial role. Overall, however, the agreement is adequate even in the state of major damage considering the large number of typical assumptions under which the analyses of fragility characteristics are performed.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 126 • Issue 12 • December 2000
Pages: 1287 - 1295
History
Received: Apr 6, 2000
Published online: Dec 1, 2000
Published in print: Dec 2000
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