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2021 | OriginalPaper | Buchkapitel

Identification of the Elastic Modulus of Simply-Supported Girders from Dynamic Tests: Method and in Situ Validation

verfasst von : Angelo Aloisio, Elena Antonacci, Riccardo Cirella, Dante Galeota, Rocco Alaggio, Massimo Fragiacomo

Erschienen in: European Workshop on Structural Health Monitoring

Verlag: Springer International Publishing

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Abstract

Dynamic measurements under known moving loads yield a novel procedure for the elastic modulus assessment of existing concrete bridges. The bridge deck is modelled as a single-span, simply supported Euler–Bernoulli beam excited by a travelling force. The elastic modulus assessment derives from an Ordinary Least Square procedure with a Bayesian uncertainty estimation, obtained by approximating the known term of the governing equations due to the travelling force with a square wave signal. The authors validated the procedure on six full-scale concrete girders of the A24 motorway in Italy and compared the results to the values obtained via in situ static load tests and further tests on concrete specimens. The procedure represents a straightforward test devised for supporting the drafting of quality control plans and the prioritization of the interventions.

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Metadaten
Titel
Identification of the Elastic Modulus of Simply-Supported Girders from Dynamic Tests: Method and in Situ Validation
verfasst von
Angelo Aloisio
Elena Antonacci
Riccardo Cirella
Dante Galeota
Rocco Alaggio
Massimo Fragiacomo
Copyright-Jahr
2021
DOI
https://doi.org/10.1007/978-3-030-64594-6_64