PSI - Issue 84

Francesco Nigro et al. / Procedia Structural Integrity 84 (2026) 183–190

190

The variation of the structural scheme has been clearly observed studying the acquired accelerometer data, that allowed to identify and track 13 vibration modes. Indeed, the first three vibration modes consisted of global-type modes, involving the vibration of the entire structure, unlike multi-span structures having individual spans characterised by similar mass and stiffness, leading to a decoupling of the global response into individual span vibrations. This preliminary characterization represents a promising baseline for future developments, which will focus on the implementation of automated Continuous Structural Health Monitoring (CSHM) of the bridge for long-term structural health assessment and predictive maintenance, which will be further validated by a FEM model capable of reproducing the actual boundary conditions of the structure. 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