Influence of the ballasted track on the dynamic properties of a truss railway bridge
2015 (English)In: Structure and Infrastructure Engineering, ISSN 1573-2479, Vol. 11, no 6, 796-803 p.Article in journal (Refereed) Published
This article 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 is also due to a change of the support conditions.
Place, publisher, year, edition, pages
2015. Vol. 11, no 6, 796-803 p.
Ballast, Railway bridges, Experimental dynamics, Finite element modelling
Research subject Civil and Architectural Engineering
IdentifiersURN: urn:nbn:se:kth:diva-142825DOI: 10.1080/15732479.2014.912242ISI: 000349904000005ScopusID: 2-s2.0-84924222475OAI: oai:DiVA.org:kth-142825DiVA: diva2:704500
Updated from accepted to published.
QC 201503252014-03-122014-03-122015-03-25Bibliographically approved