This paper aims to present the results of the historical and statistical analysis carried out on the monitoring systems which control one of the most studied domes in the world: Santa Maria del Fiore in Florence. An accurate analysis of the dome crack widths and of its global displacements (horizontal and vertical), both considering the historical data and the more recent ones, has allowed to detect the static movements developed in the monument over time, also considering their relation with environmental and seismic phenomena. Thanks to the large amount of measured data (from 1955 to 2010), some previous conclusions on the dome damage trend are here updated. Moreover, at the light of the experimental results, some issues on the dome stability - as the principal hypotheses advanced during centuries about the main cause of Brunelleschi’s dome crack pattern - are reconsidered herein: the horizontal thrusts due to the dome's self weight (Viviani, 1695 and Chiarugi, 1985), the differential settlement of pillars (Cecchini, 1698, Ximenes, 1757 and Borga, 1975) and the influence of temperature variations (Nervi, 1934). Final aim is to show the great utility of modern and historical monitoring in setting up a reliable forecasting model of the monument.
Results of 60 years-monitoring system on Santa Maria del Fiore dome, in Florence / Ottoni, Federica; Blasi, Carlo. - In: INTERNATIONAL JOURNAL OF ARCHITECTURAL HERITAGE. - ISSN 1558-3058. - 9:1(2015), pp. 7-24. [10.1080/15583058.2013.815291]