An Advanced Approach to the Long Term SHM of Structures and Transport Infrastructures

Abstract

This work shows the preliminary monitoring results by applying in situ and remote sensing systems to a school building located in Ariccia (Rome), within the WP6 “Structural Health Monitoring and Satellite Data” 2019–21 Reluis Project. In particular, the use of the remote sensing Differential Interferometry Synthetic Aperture Radar (DInSAR) has provided a spatial map of the displacement of the investigated structure and the corresponding time-series with the aim of monitoring deformation phenomena, focusing on the local scale analysis,which produces suitable results for urban monitoring and damage assessment. The DInSAR results have been integrated with the identification of the dynamic characteristics of the structure. In-situ data was provided by the Seismic Observatory of Structures (OSS), a network of permanent seismic monitoring systems managed by the Italian Department of Civil Protection (DPC). Modal parameters were identified from the accelerometric responses recorded at several floors of the buildings. The integrated use of the two techniques has allowed to confirm the healthiness of the investigated structure, even in presence of several seismic events occurred in the area during the monitoring period. This case represents a good example about how the integration of in-situ sensors with remotely sensed data is a key factor for a sustainable structural and infrastructural monitoring and can support the planning of both maintenance and safety management.