|Title:||Earthquake Fragility Assessment of Curved and Skewed Bridges in Mountain West Region|
|Authors:||Luke Chen and Suren Chen|
|Publication Date:||Sep 2016|
|Keywords:||reinforced concrete bridges, seismic risk, risk assessment|
|Type:||Research Report – MPC Publications|
Reinforced concrete (RC) bridges with both skew and curvature are common in areas with complex terrains. Skewed and/or curved bridges were found in existing studies to exhibit more complicated seismic performance than straight bridges, however the related seismic risk studies are still rare. These bridges have irregular and complex geometric designs, and comprehensive seismic analysis is not always required. As a result, 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, analytical fragility studies were 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. Results show curved and skewed geometries can considerably affect the bridge seismic fragility in a complex manner. Conducting a detailed seismic risk assessment of skewed and curved bridges is needed in low-to-moderate seismic regions.
Chen, Luke, and Suren Chen. Earthquake Fragility Assessment of Curved and Skewed Bridges in Mountain West Region, MPC-16-312. North Dakota State University - Upper Great Plains Transportation Institute, Fargo: Mountain-Plains Consortium, 2016.