Finite Element model calibration of a historical railway steel truss bridge by using dynamic monitoring data

This paper proposes a multidisciplinary approach, combining the terrestrial laser scanner and ambient vibration tests to characterize a historical steel truss bridge in Spain: the Vilagarcia Celosia Bridge. All methods are complemented by advanced numerical simulations and a coarse to fine calibration strategy, based on the Cotter and the non-linear least squares approaches. Results obtained corroborate the robustness of the proposed approach, with a max error in frequencies of 3.6% and an average modal assurance criterion of 0.93.