The mechanical behaviour of unreinforced and reinforced masonry spandrels is studied, using the results of several experimental tests carried out on H-shaped full-scale specimens. In particular, four unreinforced masonry specimens in different configurations, were built by varying the masonry material (bricks and stones) and lintel supports (wooden lintel, masonry arch) are considered. Each specimen was then reinforced with different strengthening techniques (tensioned bars, steel profiles and CFRP strips) and re-tested. The mechanical behaviour of the spandrel involves typically two types of failure: shear and flexural collapse. Starting from the experimental behaviour of the tested specimens, a numerical model able to predict the cyclic response of a spandrel subjected to seismic loading is presented and validated with the experimental results. The numerical model allows one to evaluate the energy dissipation that occurs in a masonry spandrel during a quasi-static cyclic test or a dynamic analysis.
Experimental and numerical characterization of the cyclic behaviour of unreinforced and reinforced masonry spandrels / Rinaldin, Giovanni; Amadio, Claudio; Gattesco, Natalino. - (2014), pp. ---. (Intervento presentato al convegno 9th International Masonry Conference 2014 tenutosi a Guimaraes nel 7-9 luglio 2014).
Experimental and numerical characterization of the cyclic behaviour of unreinforced and reinforced masonry spandrels
RINALDIN, Giovanni;
2014-01-01
Abstract
The mechanical behaviour of unreinforced and reinforced masonry spandrels is studied, using the results of several experimental tests carried out on H-shaped full-scale specimens. In particular, four unreinforced masonry specimens in different configurations, were built by varying the masonry material (bricks and stones) and lintel supports (wooden lintel, masonry arch) are considered. Each specimen was then reinforced with different strengthening techniques (tensioned bars, steel profiles and CFRP strips) and re-tested. The mechanical behaviour of the spandrel involves typically two types of failure: shear and flexural collapse. Starting from the experimental behaviour of the tested specimens, a numerical model able to predict the cyclic response of a spandrel subjected to seismic loading is presented and validated with the experimental results. The numerical model allows one to evaluate the energy dissipation that occurs in a masonry spandrel during a quasi-static cyclic test or a dynamic analysis.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
