Seismic fragility models for base?isolated unreinforced masonry buildings with fibre?reinforced elastomeric isolators

Unreinforced masonry (URM) buildings are highly vulnerable to seismic ground motion, calling for quantitative risk assessment and mitigation programmes in different earthquake-prone countries reduce future losses. Despite the effectiveness of base isolation technology reducing response buildings, high costs conventional isolators prevent their application low-cost housing developing countries. Fiber-reinforced elastomeric (FREIs) have been recently developed as suitable URM buildings. The structural performance isolated using FREIs can be a sustainable solution large-scale risk. In this context, present study presents fragility analysis both fixed-base base-isolated Five building archetypes were considered account variation geometry configuration. A number static pushover analyses nonlinear time history carried out assess capacity demand selected respectively, while considering uncertainties associated with material properties, model, damage state earthquake motion. curves configurations archetypes. results show that probability slight moderate is significantly higher than counterparts, demonstrating improve performance. These outcomes address further research promoting development vulnerability