Bidirectional GFRP-Composite Connections between Precast Concrete Wall Panels under Simulated Seismic Load
Publication: Journal of Composites for Construction
Volume 22, Issue 4
Abstract
Glass fiber-reinforced polymer (GFRP) composites offer several advantages over loose-plate steel connections when used in vertical joints between concrete wall panels as a connector. Advantages include resistance to corrosion, higher tensile strength, and the ability to conform to uneven surfaces. The performance of continuous and intermittent GFRP composite connections between precast concrete wall panels under simulated seismic loads is investigated using six specimens. Each specimen was comprised of two precast concrete wall panels connected with a GFRP composite system. The laminate in the system consisted of bidirectional GFRP sheets applied in a wet layup configuration over a layer of epoxy–putty adhesive. The connection was applied on one side of the wall panels to meet architectural and construction demands. Cyclic shear was introduced to the GFRP composite connection through in-plane horizontal quasi-static cyclic loads, while horizontal and vertical constraints at the bottom and top corners of each specimen were engaged. The variables in the research are the presence of epoxy–putty adhesive in the seam between the wall panels, the percent of seam height covered with bidirectional GFRP composite, and the use of GFRP spike anchors. The presence of epoxy–putty adhesive in the seam significantly increased the horizontal load capacity of the GFRP composite connection. The use of GFRP spike anchors increased the horizontal load, horizontal displacement, shear transfer, and energy dissipation capacity of the GFRP composite connection. The GFRP composite connections performed very well and could be used in the seismic retrofit of existing connections between precast concrete wall panels.
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Acknowledgments
The authors acknowledge the financial support of the Department of Civil and Environmental Engineering, University of Utah. The authors acknowledge financial and material contribution from Structural Technologies, and contribution of materials from Forterra Structural Products. The authors acknowledge the assistance of Professor Emeritus Lawrence D. Reaveley, Mark Bryant, Ryan Barton, Joel Parks, MJ Ameli, and Andy Sartor.
References
ACI (American Concrete Institute). 2013. Guide for testing reinforced concrete structural elements under slowly applied simulated seismic loads. ACI 374.2R-13. Farmington, MI: ACI.
FEMA. 2008. Techniques for the seismic rehabilitation of existing buildings. Washington, DC: FEMA.
Hofheins, C. L., L. D. Reaveley, and C. P. Pantelides. 2002. “Behavior of welded plate connections in precast concrete panels under simulated seismic loads.” PCI J. 47 (4): 122–133. https://doi.org/10.15554/pcij.07012002.122.133.
Mahrenholtz, P., J.-M. Park, and J.-Y. Cho. 2015. “Monotonic and cyclic behavior of isolated FRP anchors loaded in shear.” Compos. Part B. 72 (Apr): 72–79. https://doi.org/10.1016/j.compositesb.2014.11.033.
McMullin, P. W., C. P. Pantelides, and L. D. Reaveley. 2003. “CFRP composite connector for concrete members.” J. Compos. Constr. 7 (1): 73–82. https://doi.org/10.1061/(ASCE)1090-0268(2003)7:1(73).
Nye, T. K. 2017. “GFRP composite connection between concrete wall panels under cyclic shear.” M.S. thesis, Univ. of Utah.
Pantelides, C. P., L. D. Reaveley, and P. W. McMullin. 2003a. “Design of CFRP composite connector for precast concrete elements.” J. Reinf. Plast. Compos. 22 (15): 1335–1351. https://doi.org/10.1177/073168403035581.
Pantelides, C. P., V. A. Volnyy, J. Gergely, and L. D. Reaveley. 2003b. “Seismic retrofit of precast concrete panel connections with carbon fiber reinforced polymer composites.” PCI J. 48 (1): 92–104. https://doi.org/10.15554/pcij.01012003.92.104.
PCI (Precast/Prestressed Concrete Institute). 2010. PCI design handbook. 7th ed. Chicago: PCI.
Saenz, N., C. P. Pantelides, and L. D. Reaveley. 2004. “Strut-and-tie model of shear transfer for concrete with FRP composites.” ACI Struct. J. 101 (6): 863–871.
Smith, S. T., S. Hu, S. J. Kim, and R. Seracino. 2011. “FRP-strengthened RC slabs anchored with FRP anchors.” Eng. Struct. 33 (4): 1075–1087. https://doi.org/10.1016/j.engstruct.2010.11.018.
Strigel, R. M., J. A. Pincheira, and M. G. Oliva. 2000. “Reliability of 3/8 in. stud-welded deformed bar anchors subject to tensile loads.” PCI J. 45 (6): 72–82. https://doi.org/10.15554/pcij.11012000.72.82.
Tape, W. D., J. B. Kennedy, and M. K. S. Madugula. 2007. “Proposed design of a CFRP flange-to-flange connection for precast prestressed double tee systems.” J. Compos. Constr. 11 (1): 91–98. https://doi.org/10.1061/(ASCE)1090-0268(2007)11:1(91).
Volnyy, V. A., and C. P. Pantelides. 1999. “Bond length of CFRP composites attached to precast concrete walls.” J. Compos. Constr. 3 (4): 168–176. https://doi.org/10.1061/(ASCE)1090-0268(1999)3:4(168).
Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 22 • Issue 4 • August 2018
Copyright
©2018 American Society of Civil Engineers.
History
Received: Dec 7, 2016
Accepted: Jan 18, 2018
Published online: Apr 30, 2018
Published in print: Aug 1, 2018
Discussion open until: Sep 30, 2018
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