Performance-Based Seismic Bridge Design (2013) / Chapter Skim
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Pages 3-8
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3 performance-based seismic design (PBSD) in lieu of the current force-based prescriptive design procedures.
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4 makers. However, at a practical level, the process may be significantly truncated in order to accomplish limited goals with the currently limited data and analytical tools.
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5 – Life Safety – Collapse • List of damage repair costs related to replacement cost • Potential casualty rate for the bridge • Estimate of loss of use of the bridge This visualization is powerful because it represents the capacity side of seismic structural response in structural performance and potential outcome terms that decision makers could use to evaluate the success of the design when loaded to various levels along the pushover curve. This simple graphic summarizes much of what PBSD attempts to provide.
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6 missing pieces of knowledge and data must be addressed before such a design process is ready for deployment into practice; however, many researchers are striving to fill in those gaps. Their efforts are discussed throughout this report.
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7 The information gathered for this project includes the following. • Potential benefits that an owner might realize by using a performance-based seismic design to achieve enhanced performance over that available with the current design procedures.
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8 of the practice is evident. From these, a road map forward for the bridge engineering community, including near-term research needs, has been achieved.
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