GNGTS 2022 - Atti del 40° Convegno Nazionale

266 GNGTS 2022 Sessione 2.2 MANAGING THE URBAN COMPLEXITY OF VERNACULAR APPENINE CENTERS: THE CASE STUDY OF SCARPERIA V. Cardinali, M.T. Cristofaro, M. De Stefano, M. Ferrini, R. Nudo, B. Paoletti, M. Tanganelli Department of Architecture, University of Florence, Florence, Italy The vernacular centers of the Apennine deserve special attention from administrators, stakeholders and the scientific community. The preservation of these minor clusters deals with significant seismicity of the areas threatening both cultural transmissions and people’s life. Besides the main historical cities, Italy has grown through the development of minor centers controlling the surrounding territories (Sandoli et al., 2022). The latter were realized through bearing wall structures realized in aggregate. Nowadays these buildings have undergone several alterations and interventions modifying their structural behaviors and performances. Hence, their seismic vulnerability assessment needs to be defined. At the urban scale, the investigations are targeted to determine damage scenarios for different seismic intensities. The available methodologies can be divided within empirical, analytical and hybrid approaches. Aiming to assess historical centers and urban masonry aggregates a relevant issue is given by the knowledge path. The significative dimensions of the investigated centers make the data acquisition more difficult starting from the survey activities as several properties interact in the definition of the structural units. The execution of scrupulous cognitive phases becomes unsustainable for costs and time-consuming issues. Hence, simplifications able to express the expected behavior of the buildings are required. Due to this, empirical and hybrid approaches are the preferred approaches, as analytical studies become too demanding to be pursued at the urban scale. In this paper, a methodological framework is presented (Fig. 1). The method has been applied to the historical city center of Scarperia, in Tuscany (IT) (Fig. 2-a). Scarperia is located in the Mugello area, which represents one of the most active seismic zones of the Tuscany region, along the Apennines. The city center was built ex-novo during the Medieval period by the Florentine Republic according to a regular scheme. The research includes a cognitive acquisition developed through an interdisciplinary approach targeted at identifying architectural and structural features of masonry building aggregates. To this aim, a multiscale approach has been conceived (Cardinali et al., 2021). Fig. 1 - Flow-chart of the multiscale vulnerability approach.