Progressive Collapse Behavior of a Long-Span Cable-Stayed Bridge Induced by Cable Loss
Publication: Journal of Bridge Engineering
Volume 28, Issue 9
Abstract
Driven by high-profile events, much attention has been paid to the progressive collapse behavior of building structures. Comparably less research has addressed bridges, especially long-span cable-stayed bridges. In this paper, the progressive collapse behavior of a prototype long-span cable-stayed bridge is computationally investigated through stay-cable removal analyses. The simulations are carried out by direct sudden removal of a single stay cable at different locations and sequential removal of multiple cables. Dynamic effects as well as material and geometric nonlinearities are accounted for in the simulations, which are used to investigate critical cable loss locations and system response to the various cable loss scenarios. The simulation results show that the prototype bridge exhibits good robustness against failure of a single stay cable. When multiple cables are removed, the bridge is less tolerant to cable losses near its supporting pylons than its midspan. For the former, it exhibits an instability-type partial collapse as opposed to an unzipping type of progressive collapse followed by pylon failure for the latter.
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Data Availability Statement
All the data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This material is based upon work supported by the Federal Highway Administration under contract number DTFH61-14-D-00010. Any opinions, findings, and conclusions or recommendations expressed in this publication are those of the authors and do not necessarily reflect the views of the Federal Highway Administration.
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Information
Published In
Journal of Bridge Engineering
Volume 28 • Issue 9 • September 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: May 5, 2022
Accepted: May 19, 2023
Published online: Jul 13, 2023
Published in print: Sep 1, 2023
Discussion open until: Dec 13, 2023
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