Analisi strutturale e strategie di mitigazione del rischio sismico per il patrimonio architettonico storico: il caso della chiesa di Santa Maria di Piazza (Ostra Vetere, Italia)

This study presents the preliminary results of an ongoing seismic vulnerability assessment of the Church of Santa Maria di Piazza in Ostra Vetere (Marche Region, Italy), a historic building currently closed due to damage sustained during the 2016 Central Italy earthquake sequence. The research integrates architectural documentation, geometric survey, material analysis, and structural modeling to evaluate both local and global seismic behavior. A combined laser scanner and photogrammetric survey enabled the creation of a high-fidelity 3D geometric model, which informed a solid finite element model used for dynamic and nonlinear static (pushover) analyses. Additionally, kinematic limit analysis was employed to identify potential local collapse mechanisms and assess associated risk indices. Results highlight critical structural vulnerabilities, particularly in older masonry portions and the concrete dome support, confirming the need for targeted retrofit strategies. The findings provide a solid basis for the development of tailored intervention solutions in line with conservation principles, aiming to restore structural safety and public accessibility. Future developments will include in-situ diagnostic campaigns to refine material parameters and improve numerical model accuracy