2015 CSCE Annual Conference Regina - Building on our Growth Opportunities Conference
Dr. Yi Liu, Dalhousie University
Four scaled specimens, including three concrete masonry infilled reinforced concrete (RC) frames and a bare RC frame were tested to investigate the effect of interfacial gaps on the in-plane behaviour and strength of masonry infilled RC frames. The specimens were subjected to an in-plane lateral load applied at the frame top beam level to failure. The interfacial gap between the beam and the top of the infill was considered with two magnitudes, 7 and 12 mm. The load vs. lateral displacement behaviour and failure mode for each specimen were presented and discussed. Results showed that in general, the ultimate stiffness, first crack strength and ultimate strength decreased as the top gap size increased while the deflection at the ultimate load increased as the gap size increased. Compared with the specimen with no gaps, a top gap of 7 mm resulted in 3% reduction in the lateral strength and 40% reduction in the lateral stiffness of the infilled system whereas a top gap of 12 mm resulted in 22% and 72% reductions in the lateral strength and the lateral stiffness of the infilled system, respectively.