Coupled Creep-Damage-Plasticity Model for Concrete under Long-Term Loading
Publication: Journal of Engineering Mechanics
Volume 146, Issue 5
Abstract
A damage-plasticity model is extended to account for the effects of simultaneously occurring stiffness degradation, residual deformation, and creep. Assuming the additivity of small strains, the model combines damage mechanics, plasticity theory, and an improved version of the ACI model to characterize creep at low stress levels. The coupling between damage and creep produced by medium and high stress levels is accounted for by introducing a damage-dependent influence function. An explicit numerical algorithm is developed to implement the proposed model in the simulations of structural response. The proposed model is systematically validated by comparing its results with experimental data, suggesting that it offers promise for capturing the long-term mechanical behavior of reinforced concrete structures.
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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
This work was supported by the National Natural Science Foundation of China (Grant Nos. 51678439 and 51538010).
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Published In
Journal of Engineering Mechanics
Volume 146 • Issue 5 • May 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Jun 24, 2019
Accepted: Oct 9, 2019
Published online: Feb 21, 2020
Published in print: May 1, 2020
Discussion open until: Jul 21, 2020
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