1. Framework for Risk-Targeted Performance-Based Seismic Design of Ordinary Standard Bridges.
- Author
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Deb, Angshuman, Zha, Alex L., Caamaño-Withall, Zachary A., Conte, Joel P., and Restrepo, José I.
- Subjects
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PERFORMANCE-based design , *EARTHQUAKE engineering , *BRIDGE foundations & piers , *STRUCTURAL design , *RISK assessment , *EARTHQUAKE resistant design , *DECISION making , *PIERS - Abstract
This paper presents the analytical formulation and computational implementation of a conceptual probabilistic performance-based seismic design (PBSD) framework for ordinary standard bridge (OSB) structures. An updated probabilistic performance-based earthquake engineering (PBEE) assessment methodology is used for the parametric performance assessment of four distinct OSBs in California to investigate the effects of varying key structural design parameters over a primary design parameter space on risk-based structural performance measures. The dire need for a systematic PBSD framework for OSBs is illustrated given the significant variability in risk-based performance levels exhibited by these traditionally designed testbed OSBs. A PBSD methodology involving the design of the bridge piers is proposed wherein a risk-based feasible design domain in the primary design parameter space is identified which facilitates the risk-informed design/decision making process in the face of uncertainty. Sensitivities of risk-based feasible design domains compared with other (secondary) design variables and with the method employed for damage hazard assessment are investigated. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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