Modeling Pavement Fragility
Publication: Journal of Transportation Engineering
Volume 136, Issue 6
Abstract
Pavement performance models are the key to efficient designs and effective management practices. Over the years, a number of researchers have developed reliability models to account for the uncertainty in pavement responses and utilization patterns. However, these efforts were mostly directed toward coupled capacity-demand limit state functions that do not take into account the discontinuities after the application of rehabilitation actions (e.g., overlays). The aim of this paper is to develop a pavement fragility modeling framework that accounts for the effects of the rehabilitation actions. The fragility, defined as the conditional probability of failure given a unit level of utilization, uncouples the reliability function into the capacity and demand functions, which are two separate areas of study in pavement engineering. Closed-form approximations of the fragility curves are developed to illustrate the process and allow for seamless integration in design and management optimization models.
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Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 136 • Issue 6 • June 2010
Pages: 592 - 596
Copyright
© 2010 ASCE.
History
Received: Aug 4, 2008
Accepted: Sep 18, 2009
Published online: Sep 30, 2009
Published in print: Jun 2010
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