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Influence of the ballasted track on the dynamic properties of a truss railway bridge
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
2014 (English)In: Civil-Comp Proceedings, ISSN 1759-3433, Vol. 106Article in journal (Refereed) PublishedText
Abstract [en]

This paper presents numerical and experimental analyses of a steel truss railway bridge. The main interest of this work is that dynamic experiments have been performed before and after the ballasted track was placed on the bridge. Consequently, it has been possible to quantify the effect of the ballast and the rails on the dynamic properties of the bridge. For that, two finite element models, with and without the ballasted track, have been implemented and calibrated using the experimental results. It appears that the ballast gives an additional stiffness of about 25-30% for the lowest three eigenmodes. This additional stiffness can be only partly explained by the stiffness of the ballast. In fact, it seems that this additional stiffness also results from a change of the support conditions.

Place, publisher, year, edition, pages
Civil-Comp Press , 2014. Vol. 106
Keyword [en]
Ballast, Experimental dynamics, Finite element modelling, Railway bridges, Ballast (railroad track), Finite element method, Railroad bridges, Railroads, Rails, Transportation, Trusses, Additional stiffness, Dynamic experiment, Dynamic property, Numerical and experimental analysis, Support conditions, Stiffness
National Category
Civil Engineering
URN: urn:nbn:se:kth:diva-187581ScopusID: 2-s2.0-84963613055OAI: diva2:937150

QC 20160615

Available from: 2016-06-15 Created: 2016-05-25 Last updated: 2016-06-15Bibliographically approved

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Battini, Jean-Marc
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