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Nonresilience curve
  • Cao Wang
Cao Wang
University of Wollongong

Corresponding Author:wangc@uow.edu.au

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Resilience assessment is a widely-used tool to evaluate the ability of an object (e.g., an individual structure, or a system consisting of multiple interacting structures) to withstand, recover from, and adapt to disruptive events. This paper proposes a novel concept of “nonresilience curve”, which measures the nonresilience (complement of resilience) of an object of interest conditional on a specific hazard intensity. It is by nature an extension of the well-established fragility curves, integrating the multiple damage states of a post-hazard object. The applicability of the proposed nonresilience curve to individual structures and systems (including series systems, parallel systems, and more general & complicated systems) has been demonstrated in this paper. It is also preliminarily shown that the shape of the cumulative distribution function of a lognormal distribution is suitable to approximate the nonresilience curve, if only limited data points associated with the target nonresilience curve are available. Since the nonresilience curve is a function of the hazard intensity measure, one can estimate the nonresilience of an object in a fully probabilistic manner by additionally taking into account the uncertainty associated with the intensity measure. The proposed nonresilience curve can be further extended to formulate nonresilience surface, which is a joint function of both the intensity measure and the available resource that supports the post-hazard recovery process. The nonresilience curve is promising to be adopted in engineering practice for resilience assessment and resilience-based design of civil structures and infrastructures.
13 Sep 2023Submitted to Engineering Reports
14 Sep 2023Assigned to Editor
14 Sep 2023Submission Checks Completed
14 Sep 2023Review(s) Completed, Editorial Evaluation Pending
15 Sep 2023Reviewer(s) Assigned