Shear Capacity of Exterior Beam-Column Joints Reinforced with GFRP Bars and Stirrups
Publication: Journal of Composites for Construction
Volume 20, Issue 2
Abstract
The demand for sustainable concrete structures with longer service life and lower maintenance cost has been driving the use of glass fiber-reinforced polymer (GFRP) reinforcement in new concrete structures. The behavior of GFRP bars under seismic loading in reinforced concrete (RC) frame structures has not been widely investigated. Furthermore, the ability of FRP-RC frame structures to dissipate energy in seismic events is still questionable due to the elastic-linear behavior of the FRP reinforcement. Very few studies have been conducted on the seismic behavior of GFRP-RC exterior beam-column joints, and none studied the shear capacity of joints. Therefore, this study attempts to partially fill this gap by investigating the shear capacity of beam-column joints reinforced with GFRP bars and stirrups. Six full-scale exterior beam-column joint prototypes (T-shaped) were constructed and tested under simulated seismic load conditions. Test parameters in this study included the concrete strength and the shear stress level in the joint. Diagonal shear failure in the joint exhibited in some specimens showed the significance of evaluating the shear capacity in the joint.
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Acknowledgments
The authors wish to express their gratitude for the financial support received from the Natural Science and Engineering Research Council of Canada (NSERC) through Discovery and Canada Research Chairs program. In addition, the authors would like to acknowledge the equipment provided by Canada Foundation for Innovation (CFI). The GFRP reinforcement was generously provided by Schoeck Canada, Inc.
References
ACI (American Concrete Institute). (2005). “Acceptance criteria for moment frames based on structural testing and commentary (ACI 374.1-05).” ACI Committee 374, Farmington Hills, MI.
ACI (American Concrete Institute). (2006). “Guide for the design and construction of concrete reinforced with FRP bars (ACI 440.1R-06).” ACI Committee 440, Farmington Hills, MI.
ACI (American Concrete Institute). (2014). “Building code requirements for structural concrete (ACI 318-14) and commentary (318r-14).” ACI Committee 318, Farmington Hills, MI.
Choo, C. C., Harik, I. E., and Gesund, H. (2006). “Strength of rectangular concrete columns reinforced with fiber-reinforced polymer bars.” ACI Struct. J., 103(3), 452–459.
CSA (Canadian Standards Association). (2002). “Design and construction of building components with fibre-reinforced polymers.” CAN/CSA S806-02, Rexdale, ON, Canada.
CSA (Canadian Standards Association). (2006). “Canadian highway bridge design code.” CAN/CSA S6-06, Rexdale, ON, Canada.
CSA (Canadian Standards Association). (2012). “Design and construction of building structures with fibre-reinforced polymers.” CAN/CSA S806-12, Rexdale, ON, Canada.
CSA (Canadian Standards Association). (2014). “Design of concrete structures.” CAN/CSA A23.3-14, Toronto.
De Luca, A., Matta, F., and Nanni, A. (2010). “Behavior of full-scale glass fiber-reinforced polymer reinforced concrete columns under axial load.” ACI Struct. J., 107(5), 589–596.
Ehsani, M. R., and Alameddine, F. (1991). “Design recommendations for type 2 high-strength reinforced concrete connections.” ACI Struct. J., 88(3), 277–291.
Ehsani, M. R., and Wight, J. K. (1985). “Exterior reinforced concrete beam-to-column connections subjected to earthquake-type loading.” ACI J. Proc., 82(4), 492–499.
Fukuyama, H., Masuda, Y., Sonobe, Y., and Tanigaki, M. (1995). “Structural performances of concrete frame reinforced with FRP reinforcement.” Proc., 2nd Int. RILEM Symp., Non-Metallic (FRP) Reinforcement for Concrete Structures, Chapman & Hall, U.K., 275–286.
Hasaballa, M. H. (2014). “GFRP-reinforced concrete exterior beam-column joints subjected to seismic loading.” Ph.D. dissertation, Univ. of Manitoba, Winnipeg, MB, Canada.
Hasaballa, M. H., El-Ragaby, A., and El-Salakawy, E. F. (2011). “Seismic performance of exterior beam–column joints reinforced with glass fibre reinforced polymer bars and stirrups.” Can. J. Civ. Eng., 38(10), 1092–1102.
Mady, M., El-Ragaby, A., and El-Salakawy, E. (2011). “Seismic behavior of beam-column joints reinforced with GFRP bars and stirrups.” J. Compos. Constr., 875–886.
Paulay, T., Park, R., and Priestley, M. (1978). “Reinforced concrete beam-column joints under seismic actions.” ACI J. Proc., 75(11), 585–593.
Said, A. M., and Nehdi, M. L. (2004). “Use of FRP for RC frames in seismic zones. II. Performance of steel-free GFRP-reinforced beam-column joints.” Appl. Compos. Mater., 11(4), 227–245.
Schoeck Canada. (2014). “Schöck-ComBARTM, technical information sheet.” 〈http://www.schoeck.ca〉 (Jan. 2014).
Sharbatdar, M. K., Saatcioglu, M., Benmokrane, B., and El-Salakawy, E. (2007). “Behaviour of FRP reinforced concrete beam-column joints under cyclic loading.” 3rd Int. Conf. on Durability & Field Applications of Fibre Reinforced Polymer (FRP) Composites for Construction, (CDCC-07), Dept. of Civil Engineering, Univ. of Sherbrooke, Sherbrooke, QC, Canada, 541–548.
Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 20 • Issue 2 • April 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Sep 19, 2014
Accepted: Jun 24, 2015
Published online: Aug 17, 2015
Discussion open until: Jan 17, 2016
Published in print: Apr 1, 2016
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