Structures Congress 2018
Fragility Curve Development for the Seismic Vulnerability Assessment of Retrofitted RC Bridges under Mainshock-Aftershock Seismic Sequences
Publication: Structures Congress 2018: Bridges, Transportation Structures, and Nonbuilding Structures
ABSTRACT
Bridges are one of the most important lifeline structures such that loss of functionality of the network system is directly related to the social and economic losses experienced following an earthquake. Due to the potential of strong aftershocks to cause further damage to mainshock damaged bridges, accurate evaluation of the structural performance during a real seismic sequence is essential. This paper investigates the seismic damage of a reinforced concrete (RC) skewed bridge subject to a sequence of earthquake ground motions. Fragility curves are developed for both with and without consideration of the effects of aftershocks on the seismic vulnerability of the bridges for two cases: original bridge and retrofitted bridge by FRP. Results of this study have revealed that the effect of aftershocks on damage states appears to increase the seismic vulnerability of RC bridges. In addition, the strategy of retrofit will significantly affect the seismic response and therefore fragility of bridges.
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Published In
Structures Congress 2018: Bridges, Transportation Structures, and Nonbuilding Structures
Pages: 308 - 316
Editor: James Gregory Soules, CB&I
ISBN (Online): 978-0-7844-8133-2
Copyright
© 2018 American Society of Civil Engineers.
History
Published online: Apr 17, 2018
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