Ottawa-Carleton Earthquake Engineering Research Centre Department of Civil Engineering
P.O Box 450, Stn. A University of Ottawa
Ottawa, Ontario, Canada KIN 6N5
ABSTRACT
Four concrete block masonry walls were subjected to combined constant gravity load and incrementally increasing lateral deformation reversals. They were designed to simulate walls built using provisions in effect decades ago, before the enactment of earthquake-resistant design provisions. Two of these walls were of unreinforced masonry, the other two being partially reinforced. One wall from each pair ‘Y!!S retrofitted using a steel strip system, consisting of diagonal and vertical strips attached to the walls using through-thickness bolts. Stiff steel angles and anchor bolts were used to connect the steel strips to the foundation and the top loading beam. These tests show that the steel-strip system significantly increases the in-plane strength and ductility of low-rise unreinforced and partially reinforced masonry walls.
9208.pdf
