Seismic Fragility and Expected Damage of Masonry School Buildings in Italy

Abstract

The relevance of school buildings in the response of a community to a seismic event is wellknown, and it was observed in the aftermath of recent seismic events. The consequences of school collapses are huge, and their unusability after an earthquake may impact on community disaggregation due to the lack of an essential service for children and youth. In addition, school buildings may be crucial elements in the post-event planning, offering shelters for dislocated people in the first emergency phases. Therefore, seismic risk and scenario estimates for school buildings are fundamental to plan realistic post-event operations, as well as to devise mitigation strategies. With this purpose, in this contribution, mechanics-based fragility sets were derived for 265 macro-classes of masonry school buildings, representative of the taxonomy of Italian school building, based on the national school building registry. This fragility sets were then used to derive maps of expected damage through the web-tool IRMA schools, developed by Eucentre. Damage estimates were computed for a specific return period (conditional damage) and for a time window (unconditional damage). In addition, damage scenarios were calculated by implementing shake maps of recent earthquake occurred in Central Italy.