Assessment of Design Formulas for In-Plane FRP Strengthening of Masonry Walls
Publication: Journal of Composites for Construction
Volume 12, Issue 6
Abstract
Masonry structures have demonstrated their seismic vulnerability during recent world seismic events. This paper investigates in-plane seismic performance of unreinforced masonry (URM) walls before and after they are retrofit using fiber-reinforced polymer (FRP) materials. An assessment of available design formulas for evaluating both the in-plane performance of URM walls and the contribution of FRP strengthening systems was performed. Walls with two configurations of the FRP reinforcement have been analyzed: one based on FRP strips installed parallel to the mortar joints, the other characterized by FRP strips arranged along the diagonals of the wall. Based on shear–compression tests carried out on FRP-strengthened masonry walls available in the literature, a comparison between theoretical and experimental data is performed. A discussion about the FRP strains at failure of the walls is provided and values of effective FRP strains to be used for design purposes are proposed.
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Acknowledgments
The analyses presented in the paper have been developed within the activities of Rete dei Laboratori Universitari di Ingegneria Sismica–ReLUIS for the research program funded by the Department of Civil Protection–Executive Project 2005–2008.
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Information
Published In
Journal of Composites for Construction
Volume 12 • Issue 6 • December 2008
Pages: 643 - 649
Copyright
© 2008 ASCE.
History
Received: Oct 12, 2007
Accepted: Jan 24, 2008
Published online: Dec 1, 2008
Published in print: Dec 2008
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