Damage Assessment Through the Use of SBAS-DInsar Data: An Application to the “Vittorino da Feltre” Masonry School Building in Rome

ABSTRACT

The detection and monitoring of deformation patterns induced by causes of various nature is fundamental to prevent and mitigate the associated risk. To this aim, one of the most innovative, non-invasive monitoring approaches is based on the use of satellite radar images through the advanced multi-temporal Differential Interferometry Synthetic Aperture Radar (DInSAR) technique, which is able to detect deformations induced by slowly evolving phenomena. In this work, the multi-temporal DInSAR technique referred to as full resolution SBAS approach is exploited for the monitoring of the ground deformations and their effects on the “Vittorino da Feltre” school building located in the city of Rome (Italy), which is undergoing a retrofitting project. The displacement measurements were obtained by using the COSMO-SkyMed satellite dataset related to the city of Rome during the 2011–2019 time interval, processed with full resolution Small. The damage progression during the last years has been evaluated by comparing a recent survey of the structural damage with the previously available ones. An integration of SAR-derived data and outcomes of the on-site damage surveys is presented, aimed to perform a damage assessment of the structure using literature scales of damage.

KEYWORDS:

• Damage assessment
• masonry buildings
• mean deformation velocity
• SAR displacement time series
• structural health monitoring

Acknowledgments

The authors would like to thank Roberto Porti and Maria Felice Pasqualina Esposito (Municipio Roma I Centro) for their contribution in collecting and sharing historical information and drawings of the “Vittorino da Feltre” school building and for the kind permission to carry out a survey of the structural damage in November 2021. This work was supported by the Italian Civil Protection Department (DPC) project. The contents of this work represent the Authors’ ideas and do not necessarily correspond to the official opinion and policies of the Italian Civil Protection Department. The work was carried out using CSK® Products, © of the Italian Space Agency (ASI), delivered under a license to use by ASI. The Digital Elevation Model of the analyzed area was acquired through the SRTM archive.

Disclosure statement

No potential conflict of interest was reported by the authors.