Ground motion spatial variability and cable-stayed bridges: do we need to consider the asynchronous motion?
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Bibliographic Details
| Author(s): |
Eleftheria Efthymiou
(Southern Methodist University, Dallas, TX, USA)
Alfredo Camara (City, University of London, London, UK) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Structural Engineering for Future Societal Needs, Ghent, Belgium, 22-24 September 2021 | ||||
| Published in: | IABSE Congress Ghent 2021 | ||||
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| Page(s): | 1398-1406 | ||||
| Total no. of pages: | 9 | ||||
| DOI: | 10.2749/ghent.2021.1398 | ||||
| Abstract: |
Cable-stayed bridges are landmark structures and key parts of transportation networks worldwide. It is of vital importance that their integrity is ensured even under very large earthquakes. The spatial variability of the ground motion could be a significant aspect of the seismic behaviour of long-span cable-stayed bridges due to the differential movement of the pylons, which may lead to an amplified seismic response and increased damage in the pylons. The purpose of this paper is to examine the effect of the spatial variability of the ground motion on the seismic response of cable-stayed bridges with H-shaped pylons and various span lengths. Focus is placed on the pylons of the bridges because the constitute key members for the overall stability and structural integrity of the bridge. The study explores how important the spatial variability is in the seismic response of cable-stayed bridges by considering two different orientations of the structures with respect to the seismic fault in an extensive program of non-linear response-history analyses. |
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| Keywords: |
cable-stayed bridges pylon non-linear analysis spatial variability earthquake incidence angle
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| Copyright: | © 2021 International Association for Bridge and Structural Engineering (IABSE) | ||||
| License: | This creative work is copyrighted material and may not be used without explicit approval by the author and/or copyright owner. |
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