In-Plane Lateral Response of a Full-Scale Masonry Subassemblage with and without an Inorganic Matrix-Grid Strengthening System
Publication: Journal of Composites for Construction
Volume 15, Issue 4
Abstract
A full-scale unreinforced masonry (URM) wall with an opening was tested under in-plane lateral loading. The wall was first subjected to monotonically increasing displacements until a moderate damage level was reached. The damaged specimen was then cyclically tested up to almost the same maximum drift attained during the monotonic test to investigate the effects of previous damage on its nonlinear response. Finally, the masonry wall was repaired with inorganic matrix-grid (IMG) composites and subjected to a cyclic displacement-controlled test up to a near-collapse state. Most of the observed damage developed in the spandrel panel affecting both lateral resistance and strength degradation. Rocking of piers governed lateral stiffness and hysteretic response, which was characterized by low residual displacements and recentering behavior. The comparison between the experimental force-displacement curves demonstrated that the IMG strengthening system was able to provide energy dissipation capacity to the spandrel panel, restoring load-bearing capacity of the as-built wall, and delaying strength degradation that was indeed observed at larger displacements. Bilinear idealizations of force-displacement curves allowed the identification of displacement ductility, global overstrength, and strength reduction factor of the tested wall systems.
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Acknowledgments
This research was carried out in the framework of the UNSPECIFIEDReLUIS-DPC 2005-2008 project (Line 1—Evaluation and reduction of the vulnerability of masonry buildings) funded by the Italian Department of Civil Protection.
References
ATC. (1998). FEMA 306: Evaluation of earthquake damaged concrete and masonry wall buildings, Applied Technology Council, Redwood City, CA.
Augenti, N. (2000). Il calcolo sismico degli edifici in muratura, UTET, Turin, Italy (in Italian).
Augenti, N., and Parisi, F. (2009). “Non-linear static analysis of masonry structures.” Paper No. S4-01, Proc., 13th Italian National Conf. on Earthquake Engineering, Bologna, Italy.
Augenti, N., and Parisi, F. (2010). “Constitutive models for tuff masonry under uniaxial compression.” J. Mater. Civ. Eng., 22(11), 1102–1111.
Benedetti, D., Carydis, P., and Limongelli, M. P. (2001). “Evaluation of the seismic response of masonry buildings based on energy functions.” Earthquake Eng. Struct. Dyn., 30(7), 1061–1081.
Benedetti, D., Carydis, P., and Pezzoli, P. (1998). “Shaking table tests on 24 masonry buildings.” Earthquake Eng. Struct. Dyn., 27(1), 67–90.
Brencich, A., Gambarotta, L., and Lagomarsino, S. (1998). “A macroelement approach to the three-dimensional seismic analysis of masonry buildings.” Proc., 11th European Conf. on Earthquake Engineering (CD ROM), Paris.
Calvi, G. M., and Kingsley, G. R. (1996). “Problems and certainties in the experimental simulation of the seismic response of MDOF structures.” Eng. Struct., 18(3), 213–226.
Cattari, S., and Lagomarsino, S. (2008). “A strength criterion for the flexural behaviour of spandrels in un-reinforced masonry walls.” Proc., 14th World Conf. on Earthquake Engineering, Beijing, Paper No. 05-04-0041.
Comité Européen de Normalisation (CEN). (2004). “Eurocode 8: Design of structures for earthquake resistance—Part 1: General rules, seismic actions and rules for buildings.” EN 1998-1:2004, Comité Européen de Normalisation, Brussels, Belgium.
FEMA. (2000). “Prestandard and commentary for the seismic rehabilitation of buildings.” FEMA 356, Washington, DC.
Italian Building Code (IBC). (2008). “Norme Tecniche per le Costruzioni.” D.M. 14.01.2008, Italian Ministry of Infrastructures and Transportation, Rome (in Italian).
Magenes, G., and Calvi, G. M. (1997). “In-plane seismic response of brick masonry walls.” Earthquake Eng. Struct. Dyn., 26(11), 1091–1112.
Magenes, G., and Della Fontana, A. (1998). “Simplified non-linear seismic analysis of masonry buildings.” Proc., British Masonry Society, Vol. 8, 190–195.
Moon, F. L., Yi, T., Leon, R. T., and Kahn, L. F. (2007). “Testing of a full-scale unreinforced masonry building following seismic strengthening.” J. Struct. Eng., 133(9), 1215–1226.
Papanicolau, C. G., Triantafillou, T. C., Papathanasiou, M., and Karlos, K. (2008). “Textile reinforced mortar (TRM) versus FRP as strengthening material of URM walls: Out-of-plane cyclic loading.” Mater. Struct., 41(1), 143–157.
Prota, A., Marcari, G., Fabbrocino, G., Manfredi, G., and Caldea, C. (2006). “Experimental in-plane behavior of tuff masonry strengthened with cementitious matrix-grid composites.” J. Compos. Constr., 10(3), 223–233.
Sheppard, P., and Lutman, M. (1988). “Estimation of expected seismic vulnerability: A simple methodology for medium sized groups of older buildings.” Seismic risk assessment and design of building structures, A. Koridze, ed., Omega Scientific, Wallingford, UK, 47–62.
Shing, P. B., Noland, J. L., Klamerus, E., and Spaeh, H. (1989). “Inelastic behavior of concrete masonry shear walls.” J. Struct. Eng., 115(9), 2204–2225.
Tomaževič, M. (2000). “Earthquake-resistant design of masonry buildings.” Series on innovation in structures and construction, A. S. Elnashai, and P. J. Dowling, eds., Vol. 1, Imperial College Press, London.
Turnšek, V., and Čačovič, F. (1970). “Some experimental results on the strength of brick masonry walls.” Proc., 2nd Int. Brick and Block Masonry Conf., Stoke-on-Trent, UK, 149–156.
Uang, C. (1991). “Establishing R (or ) and factors for building seismic provisions.” J. Struct. Eng., 117(1), 19–28.
Vasconcelos, G., and Lourenço, P. B. (2009). “In-plane experimental behavior of stone masonry walls under cyclic loading.” J. Struct. Eng., 135(10), 1269–1277.
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Information
Published In
Journal of Composites for Construction
Volume 15 • Issue 4 • August 2011
Pages: 578 - 590
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Aug 5, 2010
Published online: Nov 1, 2010
Accepted: Nov 14, 2010
Published in print: Aug 1, 2011
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