Load-Displacement of Masonry Panels with Unbonded and Intermittently Bonded FRP. I: Analytical Model
This article is a reply.
VIEW THE ORIGINAL ARTICLEThis article has a reply.
VIEW THE REPLYPublication: Journal of Composites for Construction
Volume 11, Issue 1
Abstract
An experimental study was carried out to develop and test innovative fiber-reinforced polymer (FRP) rehabilitation techniques that meet the stringent requirements of restoration of historical buildings and are cost-effective alternatives applicable to existing masonry structures. In these techniques, FRP reinforcement was either unbonded or intermittently bonded to the masonry wall. In order to analyze performance, extend the range of the investigated parameters, and define limitations, a simplified analytical model was developed to predict the postcracking lateral load-displacement response under biaxial bending. The response of the retrofitted walls cannot be modeled by conventional approaches. The proposed model is based on balancing internal and external work and rigid body mechanics. It is assumed that all postcracking deformations take place at cracks between wall subpanels. Postcracking displacements are calculated from rotation rather than curvature. The adequacy of the model was verified by comparisons with the experimental results and a good agreement was found. The model could be used as the basis for a design method.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
This research was carried out as part of the mandate of the Centre for Effective Design of Structures at McMaster University funded through Ontario Research and Development Challenge Fund. The first writer gratefully acknowledges the financial support received from the Materials and Manufacturing Ontario (MMO) Centre of Excellence and McMaster University.
References
Collins, M., and Mitchell, D. (1997). Prestressed concrete structures, Response Publications, Ont., Canada.
Cosenza, E., Manfredi, G., and Realfonzo, R. (1995). “Analytical modeling of bond between FRP reinforcing bars and concrete.” Proc., 2nd Int. RILEM Symp. on Non-Metallic Reinforcement for Concrete Structures, E & FN Spon, London, 164–171.
Cosenza, E., Manfredi, G., and Realfonzo, R. (1996). “Bond characteristics and anchorage length of FRP rebars.” Proc., Advanced Composite Materials in Bridges and Structures—2nd Int. Conf., Montreal, 909–916.
Cosenza, E., Manfredi, G., and Realfonzo, R. (1997). “Behavior and modeling of bond of FRP rebars to concrete.” J. Compos. Constr., 1(2), 40–51.
De Lorenzis, L., and Nanni, A. (2002). “Bond between near-surface mounted fiber-reinforced polymer rods and concrete in structural strengthening.” ACI Struct. J., 99(2), 123–132.
Korany, Y. (2004). “Rehabilitation of masonry walls using unobtrusive FRP techniques for enhanced out-of-plane seismic resistance.” Ph.D. thesis, McMaster Univ., Hamilton, Ont., Canada.
Korany, Y., and Drysdale, R. (2006). “Rehabilitation of masonry walls using unobtrusive FRP techniques for enhanced out-of-plane seismic resistance.” J. Compos. Constr., 10(3), 213–222.
Lees, J., and Burgoyne, C. (2000). “Analysis of concrete beams with partially bonded composite reinforcement.” ACI Struct. J., 97(2), 252–258.
Naaman, A., and Joeng, S. (1995). “Structural ductility of concrete beams prestressed with FRP tendons.” Proc., 2nd Int. RILEM Symp.—Non-Metallic (FRP) Reinforcement for Concrete Structures, Ghent, Belgium, 379–386.
Vassilev, T., Jäger, W., and Pflücke, T. (2002). “Nonlinear transfer matrix model for the assessment of masonry buckling behaviour.” Proc., 6th Int. Masonry Conf., London, 512–517.
Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 11 • Issue 1 • February 2007
Pages: 15 - 23
Copyright
© 2007 ASCE.
History
Received: Apr 1, 2005
Accepted: Mar 2, 2006
Published online: Feb 1, 2007
Published in print: Feb 2007
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.