Nonlinear Finite-Element Analysis for Predicting the Behavior of Concrete Squat Walls Reinforced with GFRP Bars
Publication: Journal of Structural Engineering
Volume 145, Issue 10
Abstract
The recent experimental results for squat walls reinforced entirely with glass-fiber-reinforced-polymer (GFRP) bars have demonstrated their feasibility in resisting lateral loads and strongly suggest the need for a comprehensive analysis to show the effect of important parameters on squat-wall response. Nonlinear finite-element analysis (FEA) was used to perform an in-depth investigation to highlight the effect of the studied parameters. The FEA response was compared to the experimental results for the tested GFRP-reinforced squat walls in terms of crack patterns, failure modes, and load–lateral displacement hysteretic response. The results demonstrated that the simulation methods were stable and compliant, yielding a reasonable prediction of wall response. A comprehensive parametric study, including the effect of axial load ratio and vertical web reinforcement on squat-wall response, was performed. The results showed that axial load had a variable impact on ultimate load capacity as a function of failure modes. In contrast, while vertical web reinforcement was found to marginally enhance the ultimate shear strength, such reinforcement was shown to be necessary for cracks recovery between load reversals. Both increased axial load and vertical web reinforcement were shown to adversely affect wall deformability.
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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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Published In
Journal of Structural Engineering
Volume 145 • Issue 10 • October 2019
Copyright
©2019 American Society of Civil Engineers.
History
Received: Jan 22, 2018
Accepted: Mar 3, 2019
Published online: Aug 7, 2019
Published in print: Oct 1, 2019
Discussion open until: Jan 7, 2020
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