Hysteretic Model for Corroded Rectangular Reinforced Concrete Bridge Column Under Seismic Loading

Additional hysteretic experiments for corroded rectangular reinforced concrete (RC) columns with an axial load ratio of 0.27 were implemented. A quasi-static cyclic lateral loading with constant axial force was subjected to tests. Herein, a modified ductility factor model for corroded RC column is d...

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Bibliographic Details
Published in:Shanghai jiao tong da xue xue bao 2021-12, Vol.26 (6), p.794-803
Main Authors: Yang, Shuyan, Song, Xiaobing, Jia, Hongxue, Chen, Xi, Liu, Xila
Format: Article
Language:English
Subjects:
Architecture
Axial forces
Axial loads
Computer Science
Concrete bridges
Concrete columns
Corrosion
Cyclic loads
Ductility
Ductility tests
Earthquake loads
Electrical Engineering
Engineering
Envelope curves
Hysteresis
Lateral displacement
Lateral loads
Life Sciences
Materials Science
Reinforced concrete
Stiffness
Unloading
Citations: Items that this one cites
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Summary:Additional hysteretic experiments for corroded rectangular reinforced concrete (RC) columns with an axial load ratio of 0.27 were implemented. A quasi-static cyclic lateral loading with constant axial force was subjected to tests. Herein, a modified ductility factor model for corroded RC column is developed on the basis of the previous work and additional experiments. The model involves the influence of both the corrosion ratio of longitudinal rebar and the axial load ratio. A four-linear envelope curve model concerning lateral load and displacement is proposed in a combination of determination rules of the peak point and the failure strength point. The hysteretic model of corroded RC columns is developed by considering both degraded unloading stiffness and reloading stiffness on the history peak point. The hysteretic model can predict the residual life of corroded RC columns under seismic loading.
ISSN:1007-1172
1674-8115
1995-8188
DOI:10.1007/s12204-021-2282-8