Safety Estimation Method for Structures with Cumulative Damage
Publication: Journal of Engineering Mechanics
Volume 124, Issue 11
Abstract
Considering progressive weakening under repetitive events of loading, the proposed method estimates the safety probability for structures with cumulative damage. The structural damage is represented by a finite number of discrete states. The time evolution of damage is described by a Markov chain where the collapse corresponds to an absorbing state. Structural loading is defined as a discrete stochastic process of random events. This stochastic model can describe the seismic phenomenon as well as other environmental loads. A homogeneous Poisson process is used to model the random occurrences of the loading. To illustrate this method, the safety estimation of a masonry structure under seismic loading was performed. The obtained results are checked by a numerical simulation and compared with those of the classical analysis, which did not consider cumulative damage. The main features of the damage time evolution, the safety assessment, and the hazard function are pointed out.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 124 • Issue 11 • November 1998
Pages: 1200 - 1209
Copyright
Copyright © 1998 American Society of Civil Engineers.
History
Published online: Nov 1, 1998
Published in print: Nov 1998
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