Abstract
Structural Health Monitoring (SHM) aims to develop autonomous integrated systems allowing inspection and detection of damage with minimal human intervention. It thus represents a process of implementing a damage identification strategy through which, by periodic observation of the structure, it is possible to arrive at an assessment of certain characteristics of the system, as well as to define its current state of health. The case study under consideration describes a new static and dynamic monitoring system of a five-arch masonry railway bridge, realized by a network of sensors installed according to a placement strategy. The general objective of monitoring is the acquisition of all the information concerning the current condition of the bridge and thus the structural behaviour under static and dynamic actions to ensure an adequate level of public safety. Any change in the dynamic characteristics over time is indeed an indicator of ongoing degradation in the structure, due for instance to material damage phenomena, or geometrical. The collected data are visualized in real time with the help of the Web Platform where various operating parameters including sampling rates, resolution, trigger thresholds, alarm thresholds, etc. can be set. The data are finally analysed following a scheduled plan or upon reaching pre-established alarm thresholds.
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