Finite Element Analysis of FRP Strengthened Masonry Walls Subject to In-Plane Loading
Volume 5, Issue 3, June 2017, Pages: 23-35
Received: Feb. 28, 2017;
Accepted: May 4, 2017;
Published: Jul. 31, 2017
Views 1688 Downloads 80
Samuel A. Babatunde, Department of Civil and Coastal Engineering, University of Florida, Gainsville, USA
Interest in the application of Fiber Reinforced Polymer (FRP) for strengthening of masonry buildings has been growing steadily due to their ease of application and favorable structural at tributes. Some of these structural attributes include high ductility, stiffness, corrosion resistance and low weight. Studies have shown that FRP composites can improve the lateral resistance of un- reinforced masonry (URM) walls significantly. Analytical models and numerical calculations using finite element models developed for both cross and grid configurations of FRP strengthening are discussed in this paper. Different FRP strips are applied along the wall diagonals in the form of “X” shape and vertically and horizontally along the wall on one side. The walls were subjected to in-plane loading. Results showed that the application of FRP strips modified the static behavior of the walls due to transfer of tensile stresses from masonry to the FRP strips.
Samuel A. Babatunde,
Finite Element Analysis of FRP Strengthened Masonry Walls Subject to In-Plane Loading, Science Research.
Vol. 5, No. 3,
2017, pp. 23-35.
ABAQUS (2015). Software. (Version 6.14) USA: Dassault Systems Simulia Corp.
Abrams, D. and Lynch, J. (2001). “Flexural behavior of retrofitted masonry piers.” In Korea Earthquake Engineering Research Center (KEERC)-Mid America Earthquake Center (MAE) Joint Seminar on Risk Mitigation for Regions of Moderate Seismicity. Urbana, Ill.
Alcaino, P. and Santa-Maria, H. (2008). “Experimental Response of Externally Retrofitted Masonry Walls Subjected to Shear Loading.” J. Compos. Constr., 12, 5, 489-498.
Ehsani, M. R. Saadamanesh, H. and Valazquez-Dimas, J. (1999). “Behavior of Retrofitted URM Walls Under Simulated Earthquake Loading.” Journal of Composites for Construction, 134-141.
ElGawady, M., Lestuzzi, P., and Badoux, M. (2005). “Rehabilitation of unreinforced brick masonry walls using composites.” Carbon, 93, 2800, 1-11.
Garbin, E., Valluzzi, M., Modena, C., Galati, N., and Nanni, A. (2006). “In-plane design for masonry walls strengthened by FRP materials.” In Proceedings of the 11th International Conference: Structural Faults & Repair, vol. 184. [CD-ROM version], UK.
Hamid, A., El-Dakhakhani, W., Hakam, Z., and ElGawady, M. (2005). “Behavior of Composite Unreinforced Masonry-Fiber-Reinforced Polymer Wall Assemblages Under In-Plane Loading.” Journal of Composites for Construction, 9, 1, 73-83.
Haroun, M., Mosallam, A., and Allam, K. (2001). “Cyclic In-Plane Shear of Concrete Masonry Walls Strengthened by FRP Laminates.” In Proceedings of Seventh International Symposium on Fiber Reinforced Polymers for Reinforced Concrete Structures, vol. SP-230-19, 327-339. ACI, Kansas City.
Li, T., Silva, P., Belarbi, A., and Myers, J. (2001). “Retrofit of Un-Reinforced Infill Masonry Walls with FRP.” In Proceedings of the Composites in Construction.
Lopez, J., Oller, S., Onate, E., and Lubliner, J. (1999). “A homogeneous constitutive model for masonry.” Int. J. Numer. Meth. Eng., 46, 1651-1671.
Lourenco, P. (1998). “Experimental and numberical issues in the modelling of the mechanical behaviour of masonry.” Journal of Structural Analysis of Historical Constructions II, CIMNE, 1-35.
Page, A. (1978). “Finite element model for masonry.” J. Struct. Div., ASCE, 104, 8, 1367-1285.
Paulay, T. and Priestley, M. (1992). Seismic Design of Reinforced Concrete and Masonry Buildings. New York: J. Wiley.
Schwegler, G. (1994). Masonry construction strengthened with fiber composites in seismically endangered zones, vol. 2299-2303. Vienna: ECEE.
Shing, P., Lofti, H., Barzegarmehrabi, A., and Brunner, J. (1992). “Finite element analysis of shear resistance of masonry wall panels with and without confining frames.” In Proc. 10th World Conf. on Earthquak Engrg., ed. A. Balkema, 2581-2586. Rotterdam, The Netherlands.
Suidan, M. and Schnobrich, W. (1973). “Finite element analysis of reinforced concrete.” J. Struct. Engnr. ASCE, 99, 10, 2109-2122.
Tomazevic, M. (2000). Earthquake-Resistant Design of Masonry Buildings. Imperial College Press. Pp. 268.
Tumialan, G., Morbin, A., Nanni, A., and Medena, C. (2001). “Shear Strength of Masonry Walls with FRP Composites.” In COMPOSITES 2001 convention and Trade Show, Composites Fabricators Association, 6.
Turek, M., Ventura, C., and Kuan, S. (2007). “In-Plane Shake-Table Testing of GFRP-Strengthened Concrete Masonry Walls.” Earthquake Spectra, 23, 1, 223-237.
Valluzzi, M., Tinazzi, D., and Modena, C. (2002). “Shear behaviour of masonry panels strengthened by FRP laminates.” Const. and Building Mat., 16, 409-416.
Yu, P., Silva, P., and Nanni, A. (2004). “Application of bond polyurea in structural strengthening of RC beams and UMR walls.” Final Report CIES 01-49, University of Missouri-Rolla, Center for Infrastructure Engineering Studies.