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[42540] Artykuł:

On-site assessment of bridges supported by acoustic emission

Czasopismo: Proceedings of the Institution of Civil Engineers - Bridge Engineering   Tom: 169, Zeszyt: 2, Strony: 81-92
ISSN:  1478-4637
Wydawca:  ICE PUBLISHING, INST CIVIL ENGINEERS, 1 GREAT GEORGE ST, WESTMINISTER SW 1P 3AA, ENGLAND
Opublikowano: Czerwiec 2016
Liczba arkuszy wydawniczych:  1.00
 
  Autorzy / Redaktorzy / Twórcy
Imię i nazwisko Wydział Katedra Procent
udziału
Liczba
punktów
Piotr olaszek33.00  
Grzegorz Świt orcid logoWBiAKatedra Wytrzymałości Materiałów, Konstrukcji Betonowych i Mostowych *****3315.00  
Joan R. casas33.00  

Grupa MNiSW:  Materiały z konferencji międzynarodowej (zarejestrowane w Web of Science)
Punkty MNiSW: 15
Klasyfikacja Web of Science: Article


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Keywords:

bridges concrete structures field testing  monitoring 



Abstract:

Load testing has considerable possibilities in bridges as regards their safety assessment. This paper presents a comparison study on the diagnostic and the proof load test supported by acoustic emission. Diagnostic load testing is based on the comparison of real bridge behaviour with analytical calculation. Proof load testing is based on incremental loading until the bridge materials approach their elastic limit, but never going beyond this point, to prevent the bridge from being damaged. Tests are compared in the case of a three-span concrete bridge, made of prestressed precast beams. In a diagnostic load, reaching accurate diagnosis was made possible by the calibration of the calculation model based on deflection measurements and by the definition of concrete (performance) parameters, mainly concrete tensile strength. In proof load testing, accurate assessment of the actual capacity was possible, thanks to the support of acoustic emission measurements.