Comparison between a simplified approach and pushover analysis for a case study of masonry building in Naples

In this paper the seismic vulnerability assessment of a case study of masonry building located in Naples has been performed. First, a simplified analysis approach foreseen in the Italian Guidelines on Cultural Heritage, aligned with the Technical Codes for Constructions and based on a statistical evaluation of seismic behavior of masonry buildings, has been applied. Then, the achieved results have been compared with the more refined approach of nonlinear static analysis carried out by means of the TREMURI structural program. This is based on the schematization of masonry elements with the macro-element technique and the results are reported in terms of damage and collapse mechanisms of masonry walls, pushover curves and seismic safety index. The model with the additional assumption of all the floor diaphragms as completely rigid has also been analyzed and compared with the model with flexible horizontal structures. The comparison among results has allowed to have a clear indication of the seismic safety of the investigated building, useful to program future retrofitting interventions.