Seismic fragility analysis of low-rise unreinforced masonry buildings subjected to near- and far-field ground motions

Unreinforced masonry (URM) is considered one of the most cost-effective structural typologies for low-rise buildings in seismic regions. Near-field (NF) ground motions are sometimes characterized by high-velocity pulses that typically more destructive than far-field (FF) events. Therefore, a fragility analysis URM building subjected to NF and FF events was performed. Four walls were chosen, nonlinear models developed based on double-modified, multiple vertical line element model (DM-MVLEM). The zero-moment coefficient used determine effective uncracked section length pier. This parameter must be calculated each pier perforated wall derive maximum shear strength piers development process. A simplified analytical method proposed obtain factor performing linear static nine regression analyses results. Subsequently, pushover performed capacity curves, damage limit states defined according Eurocode 8 standard. incremental dynamic (IDA) case study applying motions. Finally, curves IDA results state. susceptibilities one- two-story investigated examining derived curves.