Effect of Time-Dependent Bond Slip on Delayed Failure of Reinforced Concrete Frames
Publication: Journal of Engineering Mechanics
Volume 148, Issue 9
Abstract
This paper investigates the influence of time-dependent bond slip on the delayed failure of RC frames. The time-dependent model of bond slip is formulated based on the mechanism of subcritical damage accumulation along the steel–concrete interface. A kinetic model of the time dependence of slip under sustained loading is developed through numerical simulations. The model is incorporated into a recently developed reduced-order numerical model for simulations of the progressive collapse of RC frames. It is shown that the present model captures the essential deformation mechanisms of the frame under both monotonic loading and sustained loading, and that the time dependence of bond slip has a profound influence on the delayed failure of RC frames, especially under moderate sustained loading. This finding highlights the importance of understanding and accounting for the time dependence of bond slip for future study of the delayed progressive collapse of RC structures.
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Data Availability Statement
The computer code generated during the study is available from the corresponding author by request.
Acknowledgments
We acknowledge the University of Houston’s Hewlett Packard Enterprise Data Science Institute for providing computational and IT resources for this work. RB acknowledges support from the Thomas and Laura Hsu Professorship.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 148 • Issue 9 • September 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Feb 26, 2022
Accepted: Apr 26, 2022
Published online: Jun 27, 2022
Published in print: Sep 1, 2022
Discussion open until: Nov 27, 2022
ASCE Technical Topics:
- Analysis (by type)
- Bonding
- Concrete
- Concrete frames
- Engineering fundamentals
- Engineering materials (by type)
- Failure analysis
- Forensic engineering
- Frames
- Materials engineering
- Materials processing
- Measurement (by type)
- Models (by type)
- Numerical models
- Reinforced concrete
- Simulation models
- Structural engineering
- Structural failures
- Structural members
- Structural systems
- Time dependence
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