Influence of Buckling Restrained Reinforcement on Behavior of Columns
Publication: Practice Periodical on Structural Design and Construction
Volume 25, Issue 4
Abstract
The present study proposes an alternative reinforcement material system, known as buckling restrained reinforcement (BRR), to improve the behavior of concrete columns loaded with earthquake-type loading in moderate seismic areas. BRR is made from circular steel tubes and placed in the main bars in the plastic-hinge-critical portion. Experimental investigations were carried out on half-scale models of concrete columns provided with and without BRR and loaded with a combination of axial loading and quasi-static reverse cyclic lateral loading. Performance improvement is observed in load–deformation characteristics, energy dissipation, and lower stiffness degradation for column specimens with the proposed BRR in comparison with specimens having light ductile detailing. Moreover, congestion of tie bars near the joint was also removed by providing BRR at the plastic hinge zone with wider tie spacing () than ductile detailing, thus reducing the confining reinforcement bars by 25% and reducing the construction challenges in the field.
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Data Availability Statement
Some or all data such as load, corresponding displacement, and calculations for various parameters such as hysteresis behavior, energy dissipation capacity, and stiffness degradation that support the findings of this study are available from the corresponding author upon reasonable request.
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Published In
Practice Periodical on Structural Design and Construction
Volume 25 • Issue 4 • November 2020
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Dec 16, 2019
Accepted: Jun 10, 2020
Published online: Aug 7, 2020
Published in print: Nov 1, 2020
Discussion open until: Jan 7, 2021
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