PSI - Issue 44

Caprino Amedeo et al. / Procedia Structural Integrity 44 (2023) 1578–1585 A. Caprino et al./ Structural Integrity Procedia 00 (2022) 000 – 000

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The time series in Fig. 6 (c) and (d) display the comparison between environmental parameters and LOS displacements of three different MP located on the roof of the Chapel; Fig. 6 (a) and (b) Errore. L'origine riferimento non è stata trovata. describe the position of both the MP and the thermocouples. Fig. 6 (c) clearly points out the negative correlation between deformation and temperature, as the first parameter increases while the later decreases; a different behaviour can be observed in Fig. 6 (d), since it is hardly visible any correlation between LOS displacements and the humidity time series. Moreover, it is useful to highlight that the MP time series display a highly noise behaviour between the second half of 2017 and first half of 2018, when structural and seismic retrofitting interventions took place on the roof of the Chapel.

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Fig. 6 Environmental parameters – LOS displacement analysis: interior (yellow) and exterior (green) thermocouples’ location (a); analysed MP on the rooftop of Scrovegni Chapel (b); temperature – LOS displacements time series (c); humidity – LOS displacements time series (d) 4. Conclusion Satellite interferometry is becoming a powerful tool in the field of SHM, providing continuous data on a large number of structures. Processing satellite images allows the identification of measurement points characterized by LOS velocity information and displacement time series. Moreover, these results find an increasing value when correlated to in situ monitoring data. In this study, an analysis was performed on the Scrovegni Chapel. The results define very low deformation trend on the whole area of Padova city centre and on the Chapel itself, as LOS displacement velocity, as well as vertical and horizontal ones, exhibit almost null values. Also, MP displacement time series are compared to on-site environmental sensors. Different results outcome from long-term and short-term analysis, as noise effects affect the displacement time series, but a correlation between LOS displacements and environmental parameters can