Analytical Evaluation of Corrosion-Induced Strength Degradation in Prestressed Bridge Girders
Publication: Journal of Structural Engineering
Volume 148, Issue 11
Abstract
This paper uses nonlinear analysis to determine the impact of corrosion-induced damage on the load-carrying capacity of prestressed concrete bridge girders. The analyses rely on two types of models, namely, beam models and nonlinear truss models. The latter are deemed necessary to obtain reliable estimates of the shear capacity, as beam models are not well-tailored for capturing shear failures. A procedure to account for the reduction in area and deformability of corroded strands, based on visually observed corrosion damage, is proposed and implemented. The models are calibrated and validated with the results of experimental tests on prestressed girders, which exhibited varying levels of corrosion-induced damage. Further analyses allow the comparison of the capacity of corrosion-damaged girders to that of their undamaged counterparts. The accuracy of a simplified procedure, using equations in the AASHTO code to determine the flexural and shear capacity of the damaged girders, is also determined.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The research presented in this paper has been supported by the Virginia Department of Transportation (Grant No. 114590). Any opinions expressed in the paper are these of the authors and do not necessarily reflect those of the sponsor.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 148 • Issue 11 • November 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Aug 9, 2021
Accepted: Jul 15, 2022
Published online: Sep 15, 2022
Published in print: Nov 1, 2022
Discussion open until: Feb 15, 2023
ASCE Technical Topics:
- Beams
- Bridge engineering
- Bridges
- Bridges (by material)
- Bridges (by type)
- Computer models
- Concrete bridges
- Corrosion
- Deterioration
- Engineering fundamentals
- Failure modes
- Forensic engineering
- Girder bridges
- Girders
- Materials characterization
- Materials engineering
- Materials processing
- Models (by type)
- Prestressing
- Shear failures
- Structural engineering
- Structural members
- Structural systems
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Cited by
- Mojtaba Aliasghar-Mamaghani, Ioannis Koutromanos, Carin Roberts-Wollmann, Matthew Hebdon, Finite Element Analysis of Chloride Ingress in Prestressed Concrete Bridge Girders Accounting for Service-Life Ambient Conditions, Journal of Structural Engineering, 10.1061/JSENDH.STENG-11686, 149, 11, (2023).