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Framework for Risk-Targeted Performance-Based Seismic Design of Ordinary Standard Bridges
| 题名： | Framework for Risk-Targeted Performance-Based Seismic Design of Ordinary Standard Bridges |
| 正文语种： | eng |
| 作者： | Angshuman Deb;Alex L. Zha;Zachary A. Caamaño-Withall;Joel P. Conte;José I. Restrepo |
| 作者单位： | Univ. of California;Univ. of California;Univ. of California;Univ. of California;Univ. of California |
| 关键词： | Performance-based earthquake engineering (PBEE);Performance-based seismic design (PBSD);Risk-based feasible design domains;Risk-informed design decision-making in the face of uncertainty;High-performance computing;Bridge engineering |
| 摘要： | 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. |
| 出版年： | 2023 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 149 |
| 期： | 7 |
| 页码： | 04023089.1-04023089.12 |
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