000009910 001__ 9910
000009910 005__ 20141205153206.0
000009910 04107 $$aeng
000009910 046__ $$k2008-10-12
000009910 100__ $$aDuenas-Osorio, Leonardo
000009910 24500 $$aFlow-Based Reliability Assessment of Infrastructure Systems

000009910 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000009910 260__ $$b
000009910 506__ $$arestricted
000009910 520__ $$2eng$$aThe Reliability assessment of lifelines subjected to external hazards is critical to protect the functionality and quality of utility services in contemporaneous society. This paper introduces two performance metrics to assess service reliability of systems. Service Reduction (SR), and Weighted Service Reduction (WSR) are proposed to study the potential of networked systems to meet required demands when they are subjected to external events such as earthquake hazards. These metrics provide flow-based reliability estimates of network performance that go beyond traditional connectivity-based system reliability methods. Using Monte Carlo simulation and flow optimization algorithms, probabilistic fragility curves for a practical networked system in Memphis, Tennessee, USA are generated. Comparison of trends in the predicted behavior of the testbed system under connectivity and flow-based functionality performance measures highlight the adequacy of the new metrics to capture quality of service at the customer level. In fact, results from WSR reveal that it is possible to maintain adequate levels of service for higher levels of seismic intensity if a targeted flow assignment strategy is implemented. The proposed fragility curves of infrastructure system’s service reduction can be used for decision making processes involving pre-disaster maintenance activities and post-event interventions. Flowbased fragility curves can also be employed as tools for the assessment of retrofitting actions by comparing network reliability predictions before and after the implementation of strategic topological and structural enhancements.

000009910 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009910 653__ $$aSystem, fragility, Service reduction, Earthquake hazard, Simulation, Optimization.

000009910 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000009910 720__ $$aDuenas-Osorio, Leonardo$$iHernandez-Fajardo, Isaac
000009910 8560_ $$ffischerc@itam.cas.cz
000009910 8564_ $$s816601$$uhttps://invenio.itam.cas.cz/record/9910/files/06-0039.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 06-0039.
000009910 962__ $$r9324
000009910 980__ $$aPAPER