Census-Based Typological Damage Fragility Curves and Seismic Risk Scenarios for Unreinforced Masonry Buildings

Seismic risk assessment has become a crucial issue for optimal management of economic resources allocated to mitigation. For this purpose, in the last decades, several research activities were aimed update hazard, exposure, and vulnerability models that contribute seismic assessment. From perspective, present work focuses on developing new empirical damage fragility curves census-based typological unreinforced masonry buildings. In particular, data observed after 2009 L’Aquila earthquake, Italy, related almost 57,000 residential buildings, used calibrate functions. These complemented with census aim obtaining an accurate estimation number undamaged Damage identified building classes, defined considering parameters both post-earthquake observations extending results whole national territory. Six classes categories construction timespan state repair parameters. Then, further distinction stories parameter was included where relevant. The as function peak ground acceleration five states, according European macroseismic scale. confirmed older buildings are more vulnerable than newer ones highlighted role curves. Finally, set functions uploaded Italian Risk Maps information technology platform, by Civil Protection Department evaluation, exemplification potential application