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Seismic Reliability Analysis of Deteriorating Representative U.S. West Coast Bridge Transportation Networks
| 题名： | Seismic Reliability Analysis of Deteriorating Representative U.S. West Coast Bridge Transportation Networks |
| 正文语种： | 英文 |
| 作者： | Nolan Kurtz; Junho Song, M.ASCE; Paolo Gardoni, M.ASCE |
| 作者单位： | Univ, of Illinois at Urbana-Champaign;Seoul National Univ |
| 关键词： | Bridge network; Database clustering; Bridge fragility; Time-variant fragility; Time-variant network reliability; Seismic network reliability; Network resilience; Structural safety and reliability. |
| 摘要： | For optimal functioning of societies and economies, understanding how networks of lifeline infrastructure, e.g., bridge networks, perform after a hazard is essential. Such hazard resilience can be quantified by considering the reliability of the network against disconnection or blocked network flow; however, a major challenge associated with such analysis is making sure that the component models are realistic while keeping the analysis accurate. For this reason, a methodology has been developed for realistic bridge network modeling using the following components: representative bridge classes identified by clustering a database, cutting-edge time-variant fragility models of bridges, and a multiscale network reliability analysis method, which accounts for the impact of bridge structural deterioration on network-level performance. Using the proposed methodology, the broader effects of various deterioration scenarios are investigated as well as the impacts of spatial correlation and the use of subjunctive representations of nodes in the network. The network-level relative importance of each network route is further investigated using conditional probability importance measures. Furthermore, the integrity index will be used to explore the network's reliability and optimal strategies to improve hazard resilience. DOI: 10.106l/(ASCE)ST.1943-541X.0001368.© 2015 American Society of Civil Engineers. |
| 出版日期： | 2016.08 |
| 出版年： | 2016 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | Vol.142 |
| 期： | NO.08 |
| 页码： | C4015010 |
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