Integrating Geomatic Approaches, Operational Modal Analysis, Advanced Numerical and Updating Methods to Evaluate the Current Safety Conditions of the Historical Bôco Bridge

This paper proposes a multidisciplinary approach, combining the terrestrial laser scanner, ambient vibration tests and minor destructive tests, to characterize an early reinforced concrete bridge in Portugal: the Bôco Bridge. All methods are complemented by advanced numerical simulations and a coarse to fine calibration strategy, based on the Douglas-Reid and the non-linear least squares approaches. Results obtained corroborate the robustness of the proposed approach, with an average relative error in frequencies of 1.2% and an average modal assurance criterion of 0.91. Considering this model, its current safety conditions were evaluated, obtaining a minimum safety factor of 2.1.

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  • English

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  • Accession Number: 01652479
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 30 2017 9:53AM