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Equivalent nosing force for a steel railway bridge based on in situ measurements

 Equivalent nosing force for a steel railway bridge based on in situ measurements
Auteur(s): , , ,
Présenté pendant IABSE Congress: Structural Engineering for Future Societal Needs, Ghent, Belgium, 22-24 September 2021, publié dans , pp. 1273-1279
DOI: 10.2749/ghent.2021.1273
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The weight and design speed of the railway vehicles increases in time. As a result, the values of design loads grow up. In old Bulgarian standard [1] the equivalent nosing force is prescribed as 60...
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Détails bibliographiques

Auteur(s): (University of Architecture, Civil Engineering and Geodesy, Sofia, Bulgaria)
(University of Architecture, Civil Engineering and Geodesy, Sofia, Bulgaria)
(University of Architecture, Civil Engineering and Geodesy, Sofia, Bulgaria)
(University of Architecture, Civil Engineering and Geodesy, Sofia, Bulgaria)
Médium: papier de conférence
Langue(s): anglais
Conférence: IABSE Congress: Structural Engineering for Future Societal Needs, Ghent, Belgium, 22-24 September 2021
Publié dans:
Page(s): 1273-1279 Nombre total de pages (du PDF): 7
Page(s): 1273-1279
Nombre total de pages (du PDF): 7
DOI: 10.2749/ghent.2021.1273
Abstrait:

The weight and design speed of the railway vehicles increases in time. As a result, the values of design loads grow up. In old Bulgarian standard [1] the equivalent nosing force is prescribed as 60kN. In the present EN1991-2 [2] this value is 100kN. Meanwhile, a significant part of the very old bridges is not designed for nosing forces. In cases of long span between cross girders of the “open type” deck and lack of nosing braces, the load bearing capacity of longitudinal girders, concerning out of plane bending moments due to nosing forces, is insufficient. To investigate the value of equivalent nosing force are provided “in situ” measurements on the longitudinal girders of “open type” deck of a steel riveted railway bridge in exploitation in the Republic of Bulgaria. The strains and horizontal linear deformations are measured in the midspan of the longitudinal beams for real trains. The equivalent nosing force is calculated using developed procedures.

Mots-clé:
pont en acier déformations
Copyright: © 2021 International Association for Bridge and Structural Engineering (IABSE)
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