Impact of seismic excitation direction on the fragility analysis of horizontally curved concrete bridges

Impact of seismic excitation direction on the fragility analysis of horizontally curved concrete... Bull Earthquake Eng https://doi.org/10.1007/s10518-018-0400-2 ORIGINAL RESEARCH PAPER Impact of seismic excitation direction on the fragility analysis of horizontally curved concrete bridges 1 1 1 1 Ruiwei Feng  · Xiaowei Wang  · Wancheng Yuan  · Juanya Yu Received: 25 January 2018 / Accepted: 22 May 2018 © Springer Science+Business Media B.V., part of Springer Nature 2018 Abstract The focus of this study is the impact of the seismic excitation direction on the fragility of horizontally curved bridges. Nonlinear time history analyses are performed on a typical, curved concrete bridge in China using a set of real ground motions with differ - ent incident angles. To build reliable probabilistic seismic demand models, ten commonly used intensity measures (IMs) are assessed in terms of various metrics to determine the optimal IMs, which account for the influence of the seismic excitation directions. Subse - quently, fragility surfaces with respect to both the optimal IM and incident angles are gen- erated to qualify the fragility sensitivity for various components and the bridge system to the seismic excitation directions. Moreover, the rationality and applicability of the methods recommended by the Caltrans, Eurocode 8 and Chinese codes for determining the seismic excitation direction of curved bridges are evaluated. The results indicate that the excita- http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Bulletin of Earthquake Engineering Springer Journals

Impact of seismic excitation direction on the fragility analysis of horizontally curved concrete bridges

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Publisher
Springer Netherlands
Copyright
Copyright © 2018 by Springer Science+Business Media B.V., part of Springer Nature
Subject
Earth Sciences; Geotechnical Engineering & Applied Earth Sciences; Environmental Engineering/Biotechnology; Civil Engineering; Geophysics/Geodesy; Hydrogeology; Structural Geology
ISSN
1570-761X
eISSN
1573-1456
D.O.I.
10.1007/s10518-018-0400-2
Publisher site
See Article on Publisher Site

Abstract

Bull Earthquake Eng https://doi.org/10.1007/s10518-018-0400-2 ORIGINAL RESEARCH PAPER Impact of seismic excitation direction on the fragility analysis of horizontally curved concrete bridges 1 1 1 1 Ruiwei Feng  · Xiaowei Wang  · Wancheng Yuan  · Juanya Yu Received: 25 January 2018 / Accepted: 22 May 2018 © Springer Science+Business Media B.V., part of Springer Nature 2018 Abstract The focus of this study is the impact of the seismic excitation direction on the fragility of horizontally curved bridges. Nonlinear time history analyses are performed on a typical, curved concrete bridge in China using a set of real ground motions with differ - ent incident angles. To build reliable probabilistic seismic demand models, ten commonly used intensity measures (IMs) are assessed in terms of various metrics to determine the optimal IMs, which account for the influence of the seismic excitation directions. Subse - quently, fragility surfaces with respect to both the optimal IM and incident angles are gen- erated to qualify the fragility sensitivity for various components and the bridge system to the seismic excitation directions. Moreover, the rationality and applicability of the methods recommended by the Caltrans, Eurocode 8 and Chinese codes for determining the seismic excitation direction of curved bridges are evaluated. The results indicate that the excita-

Journal

Bulletin of Earthquake EngineeringSpringer Journals

Published: Jun 4, 2018

References

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