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L. Bornet¹, A. Andersson¹, J. Zwolski² and J.-M. Battini¹

¹Department of Civil and Architectural Engineering, KTH Royal Institute of Technology, Stockholm, Sweden
²Department of Civil Engineering, Wroclaw University of Technology, Wroclaw, Poland

doi:10.4203/ccp.106.185

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L. Bornet, A. Andersson, J. Zwolski, J.-M. Battini, "Influence of the Ballasted Track on the Dynamic Properties of a Truss Railway Bridge", in , (Editors), "Proceedings of the Twelfth International Conference on Computational Structures Technology", Civil-Comp Press, Stirlingshire, UK, Paper 185, 2014. doi:10.4203/ccp.106.185

Keywords: ballast, railway bridges, experimental dynamics, finite element modelling..

Summary

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.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 106 PROCEEDINGS OF THE TWELFTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL STRUCTURES TECHNOLOGY Edited by: Paper 185 Influence of the Ballasted Track on the Dynamic Properties of a Truss Railway Bridge L. Bornet¹, A. Andersson¹, J. Zwolski² and J.-M. Battini¹ ¹Department of Civil and Architectural Engineering, KTH Royal Institute of Technology, Stockholm, Sweden ²Department of Civil Engineering, Wroclaw University of Technology, Wroclaw, Poland doi:10.4203/ccp.106.185 purchase the full-text of this paper Full Bibliographic Reference for this paper L. Bornet, A. Andersson, J. Zwolski, J.-M. Battini, "Influence of the Ballasted Track on the Dynamic Properties of a Truss Railway Bridge", in , (Editors), "Proceedings of the Twelfth International Conference on Computational Structures Technology", Civil-Comp Press, Stirlingshire, UK, Paper 185, 2014. doi:10.4203/ccp.106.185 Keywords: ballast, railway bridges, experimental dynamics, finite element modelling.. Summary 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. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
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