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原文传递 EXAMINATION OF ALTERNATIVE STRATEGIES FOR INTEGRATION OF SEISMIC RISK CONSIDERATIONS IN BRIDGE MANAGEMENT SYSTEMS.

题名：	EXAMINATION OF ALTERNATIVE STRATEGIES FOR INTEGRATION OF SEISMIC RISK CONSIDERATIONS IN BRIDGE MANAGEMENT SYSTEMS.
作者：	Small-EP
关键词：	Bridge-management-systems; Component-level-fragility; Data-needs; Earthquakes-; Mitigation-; Prioritization-; Retrofitting-; Risk-analysis; Seismic-vulnerability
摘要：	The development of models for consideration of natural hazard and extreme events in bridge management systems has been recognized as a need for future research and development. Two alternative approaches have been proposed for the integration of such models. The first approach is based on existing prioritization procedures and employs a value-mapping approach to convert priority indices to economic measures. Alternatively, a rigorous risk-based procedure could be developed. The applicability of using a value-based approach for seismic vulnerability mitigation is first examined. Prioritization procedures developed by the Federal Highway Administration, state departments of transportation, and through independent research efforts are utilized and prioritization performed on a sample data set. It is seen that required information for prioritization is not available in current bridge inventory and inspection databases and additional information requirements are documented. For examination, this required information was culled through available plans or assumed based on the configuration. It is shown that use of the prioritization procedures developed similar network-level cost estimates; however, there is wide variance in specific projects and projected needs. An alternative approach is therefore proposed based on component level fragility relationships. The approach is demonstrated for the sample bridges and compared to results obtained through prioritization procedures. Methods for integration of the procedures are examined and demonstrated for Pontis and BRIDGIT.
总页数：	Conference Title: Eighth International Bridge Management Conference. Location: Denver, Colorado. Sponsored by: Transportation Research Board Committee on Bridge Maintenance and Management (A3C06). Held: 19990426-19990428. Transportation Research Circular
报告类型：	科技报告