E3S Web Conf.
Volume 293, 20212021 3rd Global Conference on Ecological Environment and Civil Engineering (GCEECE 2021)
|Number of page(s)||5|
|Section||Environmental Energy and Civil Engineering and Water Conservancy Construction|
|Published online||23 July 2021|
Seismic vulnerability assessment of RC curved bridges piers subjected to bidirectional earthquake
CHANG’AN UNIVERSITY, highway school, 710064 Middle-section of Nan’er Huan Road Xi’an, China
* Corresponding author: firstname.lastname@example.org
Curved beam bridge is a kind of irregular structure, which has the advantage of adapting to complex terrain, but it is more vulnerable to damage than regular bridge under earthquake. This paper investigates the vulnerability of curved continuous girder bridges under the action of bidirectional earthquake horizontal earthquake, and the difference of vulnerability between side pier and intermediate pier is analyzed. Fragility assessment is performed using an incremental dynamic analysis method subjected to a wide range of as-recorded sequences. A proper engineering demand parameter (EDP) which can result in the most probability of failure at bridges employed in this study is determined. Result indicates that only considering the unidirectional seismic input will underestimate the seismic response and potential damage of the structure, which is not accurate for the seismic performance evaluation of the bridge. Result also shows that the damage probability of the intermediate pier of the curved bridge is higher than that of the side pier, and the more serious the failure, the smaller the difference between the two piers.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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