Structural Engineering and Mechanics

  • 제63권5호
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  • Pages.647-657
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  • 2017
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Fragility characteristics of skewed concrete bridges accounting for ground motion directionality

  • Jeon, Jong-Su (Department of Civil Engineering, Andong National University) ;
  • Choi, Eunsoo (Department of Civil Engineering, Hongik University) ;
  • Noh, Myung-Hyun (Structure Research Group, Steel Solution Marketing Division, POSCO)
  • 투고 : 2017.02.16
  • 심사 : 2017.05.29
  • 발행 : 2017.09.10
⟨ 이전 논문 다음 논문 ⟩

초록

To achieve this goal, two four-span concrete box-girder bridges with typical configurations of California highway bridges are selected as representative bridges: an integral abutment bridge and a seat-type abutment bridge. A detailed numerical model of the representative bridges is created in OpenSees to perform dynamic analyses. To examine the effect of earthquake incidence angle on the fragility of skewed bridges, the representative bridge models are modified with different skew angles. Dynamic analyses for all bridge models are performed for all earthquake incidence angles examined. Simulated results are used to develop demand models and component and system fragility curves for the skewed bridges. The fragility characteristics are compared with regard to earthquake incidence angle. The results suggest that the earthquake incidence angle more significantly affects the seismic demand and fragilities of the integral abutment bridge than the skewed abutment bridge. Finally, a recommendation to account for the randomness due to the ground motion directionality in the fragility assessment is made in the absence of the predetermined earthquake incidence angle.

키워드

과제정보

연구 과제 주관 기관 : National Research Foundation of Korea

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피인용 문헌

  1. Analysis on the Time-Varying Fragility of Offshore Concrete Bridge vol.2019, pp.None, 2017, https://doi.org/10.1155/2019/2739212
  2. Bayesian demand model based seismic vulnerability assessment of a concrete girder bridge vol.9, pp.4, 2017, https://doi.org/10.12989/acc.2020.9.4.337