Zapraszamy na darmowy webinar!
InSAR for structural health monitoring of bridges: potentialities and open questions
Data i godzina: 19 listopad 2024, 16:00 CET
Prelegent: Maria Pina Limongelli, Prof., PhD
Link do zapisów:
https://eurostruct.org/insar-for-structural-health-monitoring-of-bridges-potentialities-and-open-questions/
Abstract
Considerable research has been carried out in the past 20 years in SHM-supported civil infrastructure management. Still, a gap exists between research and practice due to limited resources that often hamper the deployment of traditional SHM contact sensing systems on all the elements (e.g. bridges, viaducts, tunnels) of a transportation network. Synthetic Aperture Radar Interferometry (InSAR) is a well-established monitoring technology, widely used to study geophysical processes such as land deformations. Recently, thanks to the development of Multi-Temporal InSAR (MT-InSAR) technique, to the growing number of satellites, to the reduction of their revisiting time, and to the higher resolution of radar images, the temporal and spatial resolution of InSAR data has considerably increased. This enables to extend the use of the InSAR technology to the measurement of deformations for civil engineering artifacts -such as individual bridges – at the same time facilitating the coverage of large transportation networks. Furthermore, due to the availability of data relevant to past periods, MT-InSAR data allows for studying the past behavior of the infrastructure, potentially identifying ongoing deterioration trends. Since 2019 in the context of a Reluis National project, several Italian research groups have been investigating the potentialities of InSAR data for monitoring different types of structures. In the context of this project, the ‘Guidelines for the use of satellite interferometric data for the interpretation of the structural behaviour’ have been very recently published. The focus of the document is on the identification of potentialities and criticalities in the use of InSAR for buildings, bridges, and cultural heritage artifacts. This talk will present the main aspects and potentialities of the InSAR technology, open questions, and some applications with a specific focus on bridges.
