Seismic Performance of GFRP-RC Exterior Beam–Column Joints with Lateral Beams
Publication: Journal of Composites for Construction
Volume 20, Issue 1
Abstract
Six full-scale specimens were constructed and tested under reversal cyclic loading to study the seismic behavior of exterior glass-fiber-reinforced-polymer (GFRP) reinforced concrete (RC) beam–column joints with lateral beams. Five specimens were completely reinforced with GFRP bars and stirrups and one was reinforced with conventional steel as a control specimen. The main test variables were reinforcing materials (GFRP and steel), presence of lateral beams, different joint shear stresses, and end anchorage of beam longitudinal bars (bent and headed-end bars). The specimens were subjected to increasing seismic drifts up to failure. Test results showed that GFRP-RC exterior beam–column joints confined with lateral beams can resist joint shear stress equal to 1.1 times the square root of the concrete compressive strength up to 6% drift ratio. In some cases, the specimens showed nonlinear behavior and nonbrittle failure, contrary to what it is expected from FRP-RC structures. Moreover, the anchorage method can change the mode of failure of GFRP-RC exterior beam–column joints.
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Acknowledgments
The authors wish to express their gratitude and sincere appreciation for the financial support received from the Natural Science and Engineering Research Council of Canada (NSERC), through Canada Research Chairs program and the University of Manitoba. The GFRP reinforcement, generously provided by Schoeck Canada Inc., is greatly appreciated. The help received from the technical staff of the McQuade Heavy Structural Laboratory at the University of Manitoba is also acknowledged.
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Information & Authors
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Published In
Journal of Composites for Construction
Volume 20 • Issue 1 • February 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Nov 13, 2014
Accepted: Mar 17, 2015
Published online: Apr 29, 2015
Discussion open until: Sep 29, 2015
Published in print: Feb 1, 2016
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