Time-varying seismic reliability analysis of representative US west coast bridge transportation networks

N. Kurtz, J. Song, P. Gardoni

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Proper post-hazard performance of lifeline infrastructure networks, e.g. bridge networks, is essential for the optimal functioning of the society and economy. A useful measure of the network resilience against hazards is the network disconnection probability. One challenge in such a network reliability analysis is to develop a "realistic" network model that can allow for efficient and accurate analysis.To this end, a methodology has been created to model a realistic bridge network in the Southwest of the US using a clustering algorithm for identifying representative bridges from a database, cutting-edge fragility models for the representative bridges, and an efficient network reliability analysis method called the selective recursive decomposition algorithm. In particular, the fragility models are time-variant, which enables time-varying seismic reliability analysis that accounts for impact of structural deterioration of bridges on the network-level performance.The effects of retrofit and deterioration on the network reliability are investigated under various scenarios. The relative importance of each bridge with regard to the disconnection probability is also quantified using the conditional probability importance measure.

Original languageEnglish (US)
Title of host publicationSafety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures - Proceedings of the 11th International Conference on Structural Safety and Reliability, ICOSSAR 2013
Pages655-662
Number of pages8
StatePublished - 2013
Event11th International Conference on Structural Safety and Reliability, ICOSSAR 2013 - New York, NY, United States
Duration: Jun 16 2013Jun 20 2013

Other

Other11th International Conference on Structural Safety and Reliability, ICOSSAR 2013
CountryUnited States
CityNew York, NY
Period6/16/136/20/13

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Safety, Risk, Reliability and Quality

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  • Cite this

    Kurtz, N., Song, J., & Gardoni, P. (2013). Time-varying seismic reliability analysis of representative US west coast bridge transportation networks. In Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures - Proceedings of the 11th International Conference on Structural Safety and Reliability, ICOSSAR 2013 (pp. 655-662)