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Titre
Integrating geomatic approaches, Operational Modal Analysis, advanced numerical and updating methods to evaluate the current safety conditions of the historical Bôco Bridge
Autor(es)
Sujet
Geoinformática
Arquitectura
Historical bridge
Reinforcement concrete
Structural damage
Terrestrial laser scanner
Ambient vibration tests
Finite element model updating
Clasificación UNESCO
6201 Arquitectura
2504.04 Fotogrametría Geodésica
Fecha de publicación
2018
Resumen
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.
URI
ISSN
0950-0618
DOI
10.1016/j.conbuildmat.2017.10.084
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Tamaño:
2.814Mo
Formato:
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