Modified Method for Accurate Evaluation of Overturning Limit on Restrainer-Reinforced Single-Column Pier Bridges
Publication: Journal of Bridge Engineering
Volume 29, Issue 9
Abstract
Single-column bridges are widely used for urban overpasses and highway bridges. Rising overturning incidents have exposed the vulnerability of this type of bridge, which is inherently susceptible to overturning collapse. A typical solution is to provide vertical restrainers at the beam ends. However, the current antioverturning calculation method was incapable of coordinating deformations between bridge components, which may have severe consequences in engineering practice. For example, the Huahu Viaduct, located in Hubei, China, experienced overturning failure even after applying vertical restrainers, which was not anticipated according to the current engineering experience. In this work, we proposed a modified calculation method regarding deformation coordination to predict the ultimate overturning capacity, verified through forensic investigation and numerical analysis, of the Huahu Viaduct. Compared with bridges without restrainers, overturning failures start with the failure of restrainers. Failure mechanisms are analyzed, including critical states and overturning features. Further comparison indicates that the practical method overestimates the ultimate overturning capacity by up to 38%, while the proposed method provides a more effective reference to this problem in engineering practice.
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Data Availability Statement
All data, models, and codes generated or used during the study are available from the corresponding author upon reasonable request.
Acknowledgments
The authors acknowledge support for this study provided by the National Natural Science Foundation of China (Grant 51978622 and 52278227), and Shanxi Transportation Holdings Group Co., Ltd. (Grant 20-JKKJ-26) is gratefully acknowledged.
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Information & Authors
Information
Published In
Journal of Bridge Engineering
Volume 29 • Issue 9 • September 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Sep 9, 2023
Accepted: Mar 28, 2024
Published online: Jun 28, 2024
Published in print: Sep 1, 2024
Discussion open until: Nov 28, 2024
ASCE Technical Topics:
- Analysis (by type)
- Bridge components
- Bridge engineering
- Bridge failures
- Bridge tests
- Bridges
- Bridges (by type)
- Continuum mechanics
- Deformation (mechanics)
- Disaster risk management
- Disasters and hazards
- Engineering fundamentals
- Engineering mechanics
- Failure analysis
- Failures (by type)
- Field tests
- Highway bridges
- Man-made disasters
- Solid mechanics
- Structural engineering
- Structural mechanics
- Tests (by type)
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