Stress Prediction Model for FRP Confined Rectangular Concrete Columns with Rounded Corners
Publication: Journal of Composites for Construction
Volume 18, Issue 1
Abstract
The paper uses the membrane hypothesis to formulate the confining behavior of fiber-reinforced polymer (FRP) confined rectangular columns. A model was developed to calculate the strength of FRP confined rectangular concrete columns. The model was verified using a database of 190 FRP confined rectangular concrete columns. The database covers unconfined concrete strength between 18.3 and 55.2 MPa, and specimens with dimensions ranging from 79–305 mm and 100–305 mm for short and long sides, respectively. The performance of the proposed model shows a very good correlation with the experimental results. In addition, the strain distribution of FRP around the circumference of the rectangular sections was examined to propose an equation for predicting the actual rupture strain of FRP. The minimum corner radius of the sections is also recommended to achieve sufficient confinement.
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Acknowledgments
The first writer acknowledges the Vietnamese Government and the University of Wollongong for support of his full Ph.D. scholarship.
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Published In
Journal of Composites for Construction
Volume 18 • Issue 1 • February 2014
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Mar 20, 2013
Accepted: Jun 24, 2013
Published online: Jun 26, 2013
Published in print: Feb 1, 2014
Discussion open until: Mar 1, 2014
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