Design of FRP-Strengthened Infill-Masonry Walls Subjected to Out-of-Plane Loading
Publication: Journal of Composites for Construction
Volume 18, Issue 3
Abstract
Fiber-reinforced polymer (FRP) strengthening systems for infill-masonry walls are typically designed to resist flexural stresses caused by out-of-plane pressure. Previous research has shown that there are potential premature failure mechanisms caused by shear sliding of the infill, which could reduce the effectiveness of the strengthening system. Current design guidelines for strengthening of masonry walls with FRP do not include guidelines for infill-masonry. This paper presents a rational approach for the design and analysis of FRP-strengthened infill-masonry walls subjected to out-of-plane loading, including the effect of using FRP end anchorage. The approach is based on consideration of four potential mechanisms: arching, shear sliding, debonding of the FRP in the overlap region, and failure of the FRP end-anchorage system. The predictions based on the proposed rational approach agree well with the measured values from two experimental programs.
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Acknowledgments
The authors gratefully acknowledge the financial support of the NSF I/UCRC Center for Integration of Composites into Infrastructure. The authors would especially like to thank Fyfe Co., LLC; Nippon Steel and Sumikin Materials Co., Ltd. Composites Company; Grancrete, Inc.; and Maeda Kosen Co., Ltd.
References
American Concrete Institute (ACI) Committee 440. (2010). “Guide for the design and construction of externally bonded fiber reinforced polymer systems for strengthening unreinforced masonry structures.”, Farmington Hills, MI.
ASTM. (2007). “Standard specification for mortar for unit masonry.” C270-07, West Conshohocken, PA.
Dai, J., Ueda, T., and Sato, Y. (2007). “Bonding characteristics of fiber-reinforced polymer sheet-concrete interfaces under dowel load.” J. Compos. Constr., 138–148.
Hrynyk, T., and Myers, J. J. (2008). “Out-of-plane behavior of URM arching walls with modern blast retrofits: Experimental results and analytical model.” J. Struct. Eng., 1589–1597.
Kim, S. J., and Smith, S. T. (2010). “Pullout strength models for FRP anchors in uncracked concrete.” J. Compos. Constr., 406–414.
Lunn, D. S. (2013). “Behavior and modeling of infill masonry walls strengthened with FRP using various end anchorage.” Ph.D. thesis, North Carolina State Univ., Raleigh, NC.
Lunn, D. S., and Rizkalla, S. H. (2011). “Strengthening of infill masonry walls with FRP materials.” J. Compos. Constr., 206–214.
Lunn, D. S., Rizkalla, S. H., Maeda, S., and Ueda, T. (2012). “FRP anchorage systems for infill masonry structures.” Proc., Third Asia-Pacific Conf. on FRP in Structures (APFIS 2012), International Institute for FRP in Construction (IIFC), Kingston, ON, Canada.
Masonry Standards Joint Committee (MSJC). (2011). “Building code requirements for masonry structures.” TMS 402-11/ACI 530-11/ASCE 5-11, The Masonry Society, American Concrete Institute, and ASCE, Boulder, CO, Farmington Hills, MI, and Reston, VA.
Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 18 • Issue 3 • June 2014
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Mar 19, 2013
Accepted: Jun 28, 2013
Published online: Jul 2, 2013
Discussion open until: Mar 21, 2014
Published in print: Jun 1, 2014
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