Effect of Vertical and Horizontal Web Reinforcement on the Strength and Deformation of Concrete Deep Beams Reinforced with GFRP Bars
Publication: Journal of Structural Engineering
Volume 143, Issue 8
Abstract
Ten full-scale concrete deep beams reinforced with glass fiber-reinforced polymer (GFRP) with a cross section of were tested to failure under two-point loading. The test variables were the configuration of web reinforcement (horizontal and/or vertical) and shear span-to-depth ratio (, 1.13, and 0.83). All specimens exhibited sufficient deformation required to develop arch action, which was confirmed by crack propagation and an almost linear strain profile in the main longitudinal reinforcement, in addition to the typical failure mode of crushing in the concrete diagonal strut. The results show that the vertical web reinforcement had no clear impact on ultimate capacity, while the configuration with horizontal-only web reinforcement unexpectedly resulted in a lower ultimate capacity compared to the specimens without web reinforcement. The web reinforcement’s main contribution was significant crack-width control.
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Acknowledgments
The authors would like to express their special thanks and gratitude to the Natural Science and Engineering Research Council of Canada (NSERC), the Canada Research Chair in Advanced FRP Composite Materials for Civil Structures, the NSERC Research Chair in FRP Reinforcement for Concrete Infrastructure, the Fonds de la recherche du Québec en nature et technologies (FRQ-NT), the Canadian Foundation for Innovation (CFI), and the technical staff of the structural lab in the Department of Civil Engineering at the University of Sherbrooke.
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Information & Authors
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Published In
Journal of Structural Engineering
Volume 143 • Issue 8 • August 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Jul 8, 2015
Accepted: Dec 21, 2016
Published ahead of print: Apr 14, 2017
Published online: Apr 15, 2017
Published in print: Aug 1, 2017
Discussion open until: Sep 15, 2017
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