For both spiritual and cultural reasons, churches are an essential part of the historical heritage of several countries worldwide, including Europe, Americas and Australasia. The extreme damage that occurred during the 2016–2017 Central Italy seismic swarm highlighted once again the noteworthy seismic vulnerability of unreinforced masonry churches, which exhibited several collapses and caused uncountable losses to the Italian artistic heritage. The seismic performance of 158 affected buildings was analyzed in the aftermath of the main shocks. The failure modes activated by the earthquakes were identified making reference to the local mechanisms currently considered in Italy for post-seismic assessment of churches. The structural damage of the investigated buildings, related to 21 mechanisms rather than to an overall global response, was explained resorting to empirical statistical procedures taking into account ground motion intensity and structural details that can worsen or improve the seismic performance. Finally, parametric fragility curves were derived selecting those structural details that mostly influence the damage by means of the likelihood-ratio test. Developed models can be used in future territorial-scale scenario or risk analyses.

出于精神和文化方面的原因，教堂是全球多个国家历史遗产的重要组成部分，包括欧洲、美洲和澳大拉西亚。2016 年至 2017 年意大利中部地震群期间发生的极端破坏再次凸显了未加固砖石教堂值得注意的地震脆弱性，该教堂多次倒塌，对意大利艺术遗产造成了不可估量的损失。对158座受影响建筑物在主震后的抗震性能进行了分析。参考意大利目前考虑的当地教堂地震后评估机制，确定了地震激活的故障模式。被调查建筑物的结构损坏，与 21 种机制有关，而不是与全球整体反应有关，被解释诉诸经验统计程序，考虑到地震动强度和结构细节，这些细节可能会恶化或改善地震性能。最后，通过似然比检验选择那些主要影响损伤的结构细节，推导出参数脆性曲线。开发的模型可用于未来的地域范围情景或风险分析。