Earthquakes and Structures

  • 제10권4호
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  • Pages.789-810
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  • 2016
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Seismic fragility performance of skewed and curved bridges in low-to-moderate seismic region

  • Chen, Luke (Department of Civil and Environmental Engineering, Colorado State University) ;
  • Chen, Suren (Department of Civil and Environmental Engineering, Colorado State University)
  • 투고 : 2015.02.27
  • 심사 : 2016.02.01
  • 발행 : 2016.04.25
⟨ 이전 논문 다음 논문 ⟩

초록

Reinforced concrete (RC) bridges with both skew and curvature are pretty common in areas with complex terrains. Existing studies have shown skewed and/or curved bridges exhibit more complicated seismic performance than straight bridges, and yet related seismic risk studies are still rare. These bridges deserve more studies in low-to-moderate seismic regions than those in seismic-prone areas. This is because for bridges with irregular and complex geometric designs, comprehensive seismic analysis is not always required and little knowledge about actual seismic risks for these bridges in low-to-moderate regions is available. To provide more insightful understanding of the seismic risks and the impact from the geometric configurations, analytical fragility studies are carried out on four typical bridge designs with different geometric configurations (i.e., straight, curved, skewed, skewed and curved) in the mountain west region of the United States. The results show the curved and skewed geometries can considerably affect the bridge seismic fragility in a complex manner, underscoring the importance of conducting detailed seismic risk assessment of skewed and curved bridges in low-to-moderate seismic regions.

키워드

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