Behavior and Design of Slender FRP-Confined Circular RC Columns
Publication: Journal of Composites for Construction
Volume 17, Issue 4
Abstract
Strengthening of RC columns through lateral confinement using fiber-reinforced polymer (FRP) jackets is now a widely accepted technique. While extensive research has been conducted on the behavior of such strengthened columns, only a very limited amount of work has examined the slenderness effect in these columns. To correct this deficiency, this paper presents a systematic study on the subject and proposes the first ever design method for slender FRP-confined circular RC columns. A simple theoretical column model for such columns is first described in the paper. Numerical results obtained from this theoretical model are then presented to examine the behavior of these columns to identify the key parameters of influence. A design method based on numerical results from the column model and following the nominal curvature approach is next formulated. The accuracy and safety of the proposed design method is demonstrated through comparison with existing experimental results.
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Acknowledgments
The authors are grateful for the financial support received from the Research Grants Council of the Hong Kong SAR (Project No: PolyU 5289/08E), The Hong Kong Polytechnic University, and the National Natural Science Foundation of China (Grant No. 51108410). The authors would also like to express their sincere gratitude to Professor Jostein Hellesland at the Mechanics Division of the University of Oslo for his helpful discussions, which improved their understanding of the nominal curvature method.
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Published In
Journal of Composites for Construction
Volume 17 • Issue 4 • August 2013
Pages: 443 - 453
Copyright
© 2013 American Society of Civil Engineers.
History
Received: May 1, 2012
Accepted: Sep 18, 2012
Published online: Sep 20, 2012
Discussion open until: Feb 20, 2013
Published in print: Aug 1, 2013
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