Seismic vulnerability assessment of a base-isolated masonry building using bonded fiber reinforced elastomeric isolators

Abstract

     Un-reinforced masonry buildings are often susceptible to damage when they are subjected to ground motion of earthquakes. Fiber reinforced elastomeric isolator (FREI) is a new laminated elastomeric isolator which is expected to use for medium and low-rise buildings to reduce the damage of the buildings under earthquakes. FREIs are primarily of two types: bonded fiber reinforced elastomeric isolator (B-FREI) and unbonded fiber reinforced elastomeric isolator (U-FREI). In this paper, seismic vulnerability assessment of a base-isolated masonry building using B-FREIs by fragility curves is investigated. Results show that the seismic vulnerability of the base-isolated building using B-FREIs is significantly reduced as compared to corressponding fixed-base building under earthquakes