A seismic evaluation procedure for a cable-stayed bridge based on the energy balance concept is presented. In this method, the capacity curve obtained from the modal pushover analysis of the cable-stayed bridge is converted to a modal energy capacity diagram. Then, by intersecting this diagram and the energy demand diagram for a selected ground motion, the dynamic target point is obtained. The method was employed on a cable-stayed bridge under Imperial Valley earthquakes with different peak ground motions and the seismic demands were compared with the results from modal pushover and non-linear response history analyses. It was found that this energy balance method can estimate the seismic responses under the selected ground motions with good accuracy. OpenSees software was employed for modelling and analysis of the cable-stayed bridge.
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December 2019
Research Article|
December 10 2018
An energy balance method for seismic analysis of cable-stayed bridges
Sina Heyrani Moghaddam;
Sina Heyrani Moghaddam
PhD Student, Department of Civil Engineering, Engineering Faculty, Ferdowsi University of Mashhad, Mashhad, Iran
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Ahmad Shooshtari
Ahmad Shooshtari
Assistant Professor, Department of Civil Engineering, Engineering Faculty, Ferdowsi University of Mashhad, Mashhad, Iran (corresponding author: ashoosht@um.ac.ir)
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Publisher: Emerald Publishing
Received:
January 13 2018
Accepted:
September 29 2018
Online ISSN: 1751-7702
Print ISSN: 0965-0911
ICE Publishing: All rights reserved
2018
Proceedings of the Institution of Civil Engineers - Structures and Buildings (2019) 172 (12): 871–881.
Article history
Received:
January 13 2018
Accepted:
September 29 2018
Citation
Heyrani Moghaddam S, Shooshtari A (2019), "An energy balance method for seismic analysis of cable-stayed bridges". Proceedings of the Institution of Civil Engineers - Structures and Buildings, Vol. 172 No. 12 pp. 871–881, doi: https://doi.org/10.1680/jstbu.18.00016
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