Seismic Resilience Assessment of Curved Reinforced Concrete Bridge Piers through Seismic Fragility Curves Considering Short- and Long-Period Earthquakes

Tomoya Uenaga, Pedram Omidian, Riya Catherine George, Mohsen Mirzajani and Naser Khaji ()
Additional contact information
Tomoya Uenaga: Civil and Environmental Engineering Program, Graduate School of Advanced Science and Engineering, Hiroshima University, Hiroshima 739-8527, Japan
Pedram Omidian: Faculty of Civil and Environmental Engineering, Tarbiat Modares University, Tehran P.O. Box 14115-397, Iran
Riya Catherine George: Civil and Environmental Engineering Program, Graduate School of Advanced Science and Engineering, Hiroshima University, Hiroshima 739-8527, Japan
Mohsen Mirzajani: Department of Civil Engineering, Marand Technical Faculty, University of Tabriz, Tabriz P.O. Box 54138-89741, Iran
Naser Khaji: Faculty of Civil and Environmental Engineering, Tarbiat Modares University, Tehran P.O. Box 14115-397, Iran

Sustainability, 2023, vol. 15, issue 10, 1-29

Abstract: Curved bridges are commonly used for logistics and emergencies in urban areas such as highway interchange bridges. These types of bridges have complicated dynamic behaviors and also are vulnerable to earthquakes, so their functionality is a critical parameter for decision makers. For this purpose, this study aims to evaluate the bridge seismic resilience under the effects of changes in deck radius (50, 100, 150 m, and infinity), pier height irregularity (Regular and Irregular), and incident seismic wave angle (0°, 45°, and 90°) under short- and long-period records. In the first step, fragility curves are calculated based on the incremental dynamic analysis and probabilistic seismic demand models. Finally, seismic resilience curves/surfaces are constructed and their interpolated values of the log-normal distribution function presented for assessing system resilience. It is found that when long-period records are applied in one given direction, the angle of incidence has the most significant effect on seismic resilience, and bridges are most vulnerable when the angle of incidence tends to 0°. The effect of deck radius on seismic resilience became more remarkable as the angle of incidence increased. Additionally, results indicate that the bridge vulnerability in long-period records is more significant than that under short-period records.

Keywords: seismic vulnerability; resilience; fragility curves; long-period ground motion; pier height irregularity; curved reinforced concrete bridges (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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