COMPARISON AMONG ANALYSIS METHODOLOGIES FOR SEISMIC VULNERABILITY ASSESSMENT OF MASONRY SCHOOL BUILDINGS IN TORRE DEL GRECO

The paper is framed within activities of the Working Group 4 "Risk Assessment for Catastrophic Scenarios in Urban Areas "of the concluded European research project COST Action C26 "Urban Habitat Constructions under Catastrophic Events "(chair: M. F. Mazzolani) and deals with the seismic vulnerability evaluation of some schools located in Tone del Greco. The school buildings, made of tuff masonry blocks, have been detected under the geometric and mechanical point of view and their seismic vulnerability has been assessed by different investigation methods. In particular, the following analytical procedures have been applied to the examined school sample: 1) the GNDT-CNR method, based on the quick compilation of survey sheets; 2) the VM method, a semi-qualitative approach based on the compilation of a specific spreadsheet which provides the building PGA with reference to specific limit states; 3) the FaMIVE procedure, which allows to assess the in-plane and out-of-plane vulnerability of building walls, once their main geometric and mechanical properties are defined; 4) the 3MURI software, which permits to evaluate the global vulnerability of masonry buildings by means of static non-linear analysis. The results obtained from different evaluation methods have been examined and compared each other, allowing for the definition of a seismic vulnerability ranking of schools under investigation useful for planning future retrofitting interventions.