Damage assessment in single-nave churches and analysis of the most recurring mechanisms after the 2016–2017 central Italy earthquakes

Abstract Assessment of churches based on empirical data at a territorial scale is suitable tool to have an overview the seismic behaviour this peculiar structural typology and evaluate their current state vulnerability. Fragility vulnerability curves are also aimed perform analysis different scenarios. The paper presents detailed typological 633 single-nave churches, as selected subset database previously examined by authors, with aim evaluating more in detail influence some parameters, such masonry typology, church dimensions presence bell tower, overall church. Then, specific analyses carried out assess played single mechanisms definition damage index, focus providing qualitative evaluations explicit fragility related most recurring significant collapse mechanisms. This original contribution field assessment since nowadays little information available literature about levels mechanisms, while attention still focused global damage.