Parameterized Seismic Fragility Curves for Curved Multi-frame Concrete Box-Girder Bridges Using Bayesian Parameter Estimation
- Authors
- Jeon, Jong Su; Mangalathu, Sujith; Song, Junho; Desroches, Reginald
- Issue Date
- Jul-2019
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- Curved Multi-Frame Concrete Box-Girder Bridges; Multiparameter Demand Models; Parameterized; Bridge-Specific; Bridge-Class Fragility Curves; Bayesian Parameter Estimation; Significant Uncertainty Parameters
- Citation
- JOURNAL OF EARTHQUAKE ENGINEERING, v.23, no.6, pp.954 - 979
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF EARTHQUAKE ENGINEERING
- Volume
- 23
- Number
- 6
- Start Page
- 954
- End Page
- 979
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/13307
- DOI
- 10.1080/13632469.2017.1342291
- ISSN
- 1363-2469
- Abstract
- This paper addresses the application of a Bayesian parameter estimation method to a regional seismic risk assessment of curved concrete bridges. For this purpose, numerical models of case-study bridges are simulated to generate multiparameter demand models of components, consisting of various uncertainty parameters and an intensity measure (IM). The demand models are constructed using a Bayesian parameter estimation method and combined with limit states to derive the parameterized fragility curves. These fragility curves are used to develop bridge-specific and bridge-class fragility curves. Moreover, a stepwise removal process in the Bayesian parameter estimation is performed to identify significant parameters affecting component demands.
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