Behavior of FRP Strengthened Infill Walls under In-Plane Seismic Loading
Publication: Journal of Composites for Construction
Volume 11, Issue 3
Abstract
The present paper investigates the suitability and effectiveness of fiber-reinforced polymers (FRP) in strengthening and/or repairing unreinforced masonry infill walls in reinforced concrete frames which are subjected to in-plane seismic/cyclic loading. For this purpose, a detailed experimental program was conducted. Specimen geometry, test setup, instrumentation, and a loading procedure that simulates earthquake loading are presented in a detailed fashion. Results of experimental observations are discussed in the form of load-displacement hysteretic loops and envelopes; column profiles; strain diagrams, and wall shear distortion. The test results, in general, indicate that the use of glass FRP (GFRP) sheets as strengthening materials provides a degree of enhancement to the infill wall, upgrades its deformation capacity, and makes the wall work as one unit. These results thus show great potential for externally bonded GFRP sheets in upgrading and strengthening the infill walls under in-plane seismic loads.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The writers gratefully acknowledge Deanship of Scientific Research at King Saud University for approval and granting this research project within the Applied National Research Program.
References
Albert, M. L., Elwi, A. E., and Cheng, J. J. R. (2001). “Strengthening of unreinforced masonry walls using FRPs.” J. Compos. Constr., 5(2), 76–84.
Almusallam, T. H., Al-Salloum, Y. A., Alsayed, S. H., and Mosallam, A. S. (2001). “Behavior of unreinforced masonry walls strengthened with FRP composite materials.” Proc., SAMPE 2001 Symp., Society for the Advancement of Material and Process Engineering, Long Beach, Calif.
Al-Salloum, Y. A., and Almusallam, T. H. (2005). “Load capacity of concrete masonry block walls strengthened with epoxy-bonded GFRP sheets.” J. Compos. Mater., 39, 1719–1745.
Alsayed, S. H., Al-Salloum, Y. A., and Almusallam, T. H. (2003). “Rehabilitation of the infrastructure using composite fabrics.” Final Rep., Project AR-16–52, King Abdulaziz City for Science and Technology (KACST), Riyadh, Saudi Arabia.
Crisafulli, F. J. (1997). “Seismic behavior of reinforced concrete structures with masonry infills.” Ph.D. thesis, Dept. of Civil Engineering, Univ. of Canterbury, England.
Ehsani, M. R., Saadatmanesh, H., and Velazquez-Dimas, J. I. (1999). “Behavior of retrofitted URM walls under simulated earthquake loading.” J. Compos. Constr., 3(3), 134–142.
El-Dakhakhni, W. W., Hamid, A. A., and Elgaaly, M. (2004). “Seismic retrofit of concrete-masonry-infilled steel frames using glass fiber-reinforced polymer laminates.” J. Struct. Eng., 130(9), 1343–1352.
Gergely, J., Pantelides, C. P., and Reaveley, L. D. (2000). “Shear strengthening of RC T-joints using CFRP composites.” J. Compos. Constr., 4(2), 56–64.
Hakam, Z. H. R. (2000). “Retrofit of hollow concrete masonry infilled steel frames using glass fiber reinforced plastic laminates.” Ph.D. thesis, Dept. of Civil and Architectural Engineering, Drexel Univ., Philadelphia.
Haroun, M. A., Ghoneam, E. H., and Salama, A. E. (1997). “Seismic strengthening of masonry-infilled frames by fiber composite.” Report Prepared for Hexcel-Fyfe, Dept. of Civil and Environmental Engineering, Univ. of California, Irvine.
Mehrabi, A. B., and Shing, P. B. (1994). “Performance of masonry-infilled RC frames under in-plane lateral loads: Analytical modeling.” Proc., NCEER Workshop on Seismic Response of Masonry, San Francisco.
Michailidis, C. N., Stylinidis, K. C., and Kappos, A. J. (1994). “Analytical modeling of masonry infilled RC frames subjected to seismic loading.” Proc., 10th European Conf. on Earthquake Engineering, Vienna, Austria, Vol. 2, 1519–1524.
Mukherjee, A., and Joshi, M. (2005). “FRPC reinforced concrete beam-column joints under cyclic excitation.” Compos. Struct., 70, 185–199.
Tong, X., Hajjar, J. F., Schultz, A. E., and Shield, C. K. (2005). “Cyclic behavior of steel frame structures with composite reinforced concrete infill walls and partially restrained connections.” J. Constr. Steel Res., 60, 1453–1480.
Triantafillou, T. C. (1998). “Strengthening of masonry structures using epoxy-bonded FRP laminates.” J. Compos. Constr., 2(2), 96–104.
Zarnic, R., and Tomazevic, M. (1984). “The behavior of masonry infilled reinforced concrete frames subjected to cyclic lateral loading.” Proc., 8th World Conf. on Earthquake Engineering, San Francisco.
Zarnic, R., and Tomazevic, M. (1985). “Study of the behavior of masonry infilled reinforced concrete frames subjected to seismic loading.” Proc., 7th Int. Brick Masonry Conf., Melbourne, Australia.
Zarnic, R., and Tomazevic, M. (1988). “An experimentally obtained method for evaluation of the behavior of masonry infilled RC frames.” Proc., 9th World Conf. on Earthquake Engineering, Tokyo.
Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 11 • Issue 3 • June 2007
Pages: 308 - 318
Copyright
© 2007 ASCE.
History
Received: Oct 12, 2005
Accepted: Jun 2, 2006
Published online: Jun 1, 2007
Published in print: Jun 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.