Albutainy, Mohammed1; Ashour, Ahmed2 and Galal, Khaled3
1 PhD Student, Concordia University, Dept. Building, Civil and Environmental Eng., 1515 St-Catherine St. W, Montréal, Québec, Canada, H3G 2W1, m_albuta@encs.concordia.ca
2 Postdoctoral Fellow, Concordia University, Dept. Building, Civil and Environmental Eng., 1515 St-Catherine St. W, Montréal, Québec, Canada, H3G 2W1, eng.ahmed3ashour@gmail.com
3 Professor, Concordia University, Dept. Building, Civil and Environmental Eng., 1515 St-Catherine St. W, Montréal, Québec, Canada, H3G 2W1, galal@bcee.concordia.ca
ABSTRACT
Recently, there is a global trend of promoting higher building performance with lower cost and lower environmental impact. Reinforced masonry (RM) systems have the inherent benefits of fire
protection, structural durability, energy efficiency and cost effectiveness. Recent research efforts toward enhancing the lateral performance of RM walls are reflected in the current Canadian national building code and masonry design standards by introducing a new ductile RM walls category with lateral force reduction factor of 3.0. Consequently, promoting RM shear walls as a potential seismic force resisting system (SFRS) alternative in mid-rise buildings. One way of increasing the wall ductility is by introducing boundary elements to enhance the ultimate compressive strain and wall curvature ductility by increasing the confinement level at wall’s end zones. In this study, three half-scale RM walls with boundary elements specimens, flexural dominated, were constructed to be tested under a reversed cyclic moment and lateral loading. These walls represent the plastic hinge zone located in lower storey panel of 10-storey RM shear wall building. The current study investigates the effect changing the transverse reinforcement ratios in the wall boundary element on the RM shear wall lateral response. This paper presents the experimental work and the predicted results of the three walls. Consequently, this study contributes to the understanding of the lateral response of RM shear walls with high aspect ratio (height to length ratio) with an ultimate goal of enhancing the seismic hazard safety of RM mid-rise buildings in Canada.
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