PSI - Issue 44

S. Monchetti et al. / Procedia Structural Integrity 44 (2023) 1988–1995

1991

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Silvia Monchetti et al. / Structural Integrity Procedia 00 (2022) 000–000

Since the Structural Health Monitoring (SHM) system is widely employed as a powerful tool for investigating the evolution with time of the structural parameters which are related to the material damage and deterioration, the research can take advantage from these observations to collect information useful for the model calibration. It is also in this respect that the case study of the Pieve di Sant’Andrea confirms its relevance. A laser scanner survey of the pulpit of G. Pisano, which was performed by Geomatics and Communication for Cultural Heritage Laboratory (GeCo Laboratory, University of Florence) during a former research agreement, is available for this project (Conti et al. (2022)). In addition, a SHM was placed on the pulpit of G. Pisano at the beginning of 2022 as a part of research agreement between the Department of Civil and Environmental Engineering (DICEA) and the Department of Earth Sciences (DST) from the University of Florence, the “Soprintendenza Archeologia, Belle Arti e Paesaggio per la città metropolitana di Firenze e le province di Pistoia e Prato” (SABAP-FI) and the Association Friends of Florence (FoF) The third OO of the research involves the implementation of the HBIM of the Pistoia historical construction analysed on the base of the acquired results of the previous objectives (OO1 and OO2). The largest effort, in this step, is associated with the database design which includes the available information, as well as the SHM data, and the definition of the Level Of Detail (LOD) associated to each geometric elements defined in OO1. • OO4 – Digital Twin (DT) The fourth OO completes the research with the definition of the DT of the Pistoia historical construction analysed and the works of art inside. The definition of a robust computational model is performed by using the observations to define the posterior probability distribution of the uncertain parameters through BMU. This would be one of the few applications of BMU on historic constructions which would help to overpass the difficulties of choosing the unknown model parameters by describing their uncertainty and accounting for its influence on the structural response predictions. 2.1. The Pulpit of Giovanni Pisano In 1301, a new pulpit was erected in the church of Sant'Andrea in Pistoia (Fig. 2B) with Christological scenes. It was built hexagonal in shape and divided, in elevation, into three tiers (Fig. 2A): the columns and the base; the arches and the parapet. which financed the project. • OO3 – Integrated HBIM

Fig. 2: The pulpit of Giovanni Pisano in the church of Sant’Andrea in Pistoia (Italy).

The pulpit was sculped by Giovanni Pisano and it is a masterpiece by the Italian sculptor, often compared to the pulpits in the Duomo di Siena (1256-1258) and in the Baptistery of Pisa (1257-1260) realized by his father, Nicola