Analytical Investigation of Lateral Strength of Masonry Infilled RC Frames Retrofitted with CFRP
Publication: Journal of Performance of Constructed Facilities
Volume 24, Issue 4
Abstract
In this study, two reinforced concrete frames with hollow clay tile masonry infill walls, retrofitted with diagonally applied carbon fiber-reinforced polymer (CFRP), which were tested previously, were analytically investigated. A simple material model for the masonry infill wall strengthened with CFRP is suggested. The lateral strength of each rehabilitated frame was obtained by pushover analysis of four different models using a commercially available finite-element program, and the results were compared with the test results. We also determined the lateral strength of the CFRP-applied masonry infill walls, and compared the results with the results obtained from existing analytical models. Drift capacity of the masonry infill walls strengthened with CFRP was also investigated, and the drift capacity of the masonry infill walls strengthened with diagonally applied CFRP was recommended. It is concluded that the strength of the masonry infilled frames strengthened with diagonally applied CFRP can be satisfactorily predicted with the suggested procedure. The ultimate drift capacity of the masonry infill walls strengthened with diagonally applied CFRP strips was conservatively predicted to be 1.0%.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
Professor Guney Ozcebe and Research Assistant Emre Akin of the Middle East Technical University in Ankara, Turkey are greatly acknowledged for their valuable contribution.
References
Akyuz, U., and Ozdemir, G. (2004). “Mechanical properties of CFRP anchorages.” Proc., 13th WCEE (CD-ROM), Vancouver, Canada.
Albert, M. L., Elwi, A. E., and Cheng, J. J. R. (2001). “Strengthening of unreinforced masonry walls using FRPs.” J. Compos. Constr., 5(2), 76–83.
ANSYS user's manual. (2009). ANSYS Inc., Canonsburg, Pa.
Ascione, L., Feo, L., and Fraternali, F. (2005). “Load carrying capacity of 2D FRP/strengthened masonry structures.” Composites, Part B, 36, 619–626.
ACI 530-08. (2008). “Building code requirements and specification for masonry structures.” Farmington Hills, Mich.
Balsamo, A., Colombo, A., Manfredi, G., Negro, P., and Prota, A. (2005). “Seismic behavior of a full-scale RC frame repaired using CFRP laminates.” Eng. Struct., 27, 769–780.
Binici, B., Ozcebe, G., and Ozcelik, R. (2007). “Analysis and design of FRP composites for seismic retrofit of infill walls in reinforced concrete frames.” Composites, Part B, 38, 575–583.
Camli, U. S., and Binici, B. (2007). “Strength of carbon fiber-reinforced polymers bonded to concrete and masonry.” Constr. Build. Mater., 21(7), 1431–1446.
Dawe, J. L., Seah, C. K., and Liu, Y. (2001). “A computer model for predicting infilled frame behavior.” Can. J. Civ. Eng., 28, 133–148.
El-Dakhakhni, W. W., Elgaaly, M., and Hamid, A. A. (2003). “Three-strut model for concrete masonry-infilled steel frames.” J. Struct. Eng., 129(2), 177–185.
El Gawady, M. A., Lestuzzi, P., and Badoux, M. (2006). “A seismic retrofitting of unreinforced masonry walls using FRP.” Composites, Part B, 37, 148–162.
Erdem, I., Akyuz, U., Ersoy, U., and Ozcebe, G. (2006). “An experimental study on two different strengthening techniques for RC frames.” Eng. Struct., 28, 1843–1851.
FEMA. (1997). “NEHRP guidelines for the seismic rehabilitation of buildings.” FEMA 273, Washington, D.C.
Gabor, A., Bennani, A., Jacquelin, E., and Lebon, F. (2006). “Modelling approaches of the in-plane shear behaviour of unreinforced and FRP strengthened masonry panels.” Compos. Struct., 74, 277–288.
Gambarotta, L., and Lagomarsino, S. (1997a). “Damage models for the seismic response of brick masonry shear walls. Part I: The mortar joint model and its applications.” Earthquake Eng. Struct. Dyn., 26(4), 423–439.
Gambarotta, L., and Lagomarsino, S. (1997b). “Damage models for the seismic response of brick masonry shear walls. Part II: The continuum model and its applications.” Earthquake Eng. Struct. Dyn., 26(4), 441–462.
Grande, E., Milani, G., and Sacco, E. (2008). “Modelling and analysis of FRP-strengthened masonry panels.” Eng. Struct., 30, 1842–1860.
Kent, D. C., and Park, R. (1971). “Flexural members with confined concrete.” J. Struct. Eng., 97(7), 1969–1990.
Marfia, S., and Sacco, E. (2001). “Modeling of reinforced masonry elements.” Int. J. Solids Struct., 38, 4177–4198.
Mehrabi, A. B., and Shing, P. B. (1997). “Finite element modeling of masonry infilled RC frames.” J. Struct. Eng., 123(5), 604–613.
Mertol, H. C. (2002) “Carbon fiber-reinforced masonry infilled reinforced concrete frame behavior.” MS thesis, Dept. Civ. Eng., Middle East Tech. Univ., Ankara, Turkey.
Ozcebe, G., Ersoy, U., Tankut, T., Erduran, E., Keskin, R. S. O., and Mertol, H. C. (2003). “Strengthening of brick infilled RC frames with CFRP.” SERU-Structural Engineering Research Unit, Rep. No. 2003/1, TUBITAK-METU, Ankara, Turkey.
Saadatmanesh, H., Ehsani, M. R., and Jin, L. (1994). ““Strength and ductility of concrete columns externally reinforced with fibre composite straps.” ACI Struct. J., 91(4), 434–447.
Smith, B. S. (1967). “Methods for predicting the lateral stiffness and strength of multi-storey infilled frames.” Build. Sci., 2, 248–257.
Sucuoglu, H., and McNiven, H. D. (1991). “Seismic shear capacity of reinforced masonry piers.” J. Struct. Eng., 117(7), 2166–2186.
Sugano, S. (1996). “State-of-the-art in techniques for rehabilitation of buildings.” Proc., 11th WCEE (CD-ROM), Pergamon, Oxford, U.K.
Triantafillou, T. C. (1998). “Strengthening of masonry structures using epoxy-bonded FRP laminates.” J. Compos. Constr., 2(2), 96–104.
Triantafillou, T. C., and Antonopoulos, C. P. (2000). “Design of concrete flexural members strengthened in shear with FRP.” J. Compos. Constr., 4(4), 198–205.
Yao, J., Teng, J. G., and Chen, J. F. (2005). “Experimental study on FRP-to-concrete bonded joints.” Composites, Part B, 36, 99–113.
Zhang, Z., and Hsu, C. T. (2005). “Shear strengthening of reinforced concrete beams using carbon-fiber-reinforced polymer laminates.” J. Compos. Constr., 9(2), 158–169.
Information & Authors
Information
Published In
Journal of Performance of Constructed Facilities
Volume 24 • Issue 4 • August 2010
Pages: 302 - 310
Copyright
© 2010 ASCE.
History
Received: Feb 9, 2009
Accepted: Dec 28, 2009
Published online: Dec 30, 2009
Published in print: Aug 2010
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.