Computational Technology Resources - CCP

Keywords: high speed, track transition, stiffness, superstructure, rails, sleepers.

Summary

A great problem of the Spanish high speed railways continues to be the track transitions between embankments and engineering structures. The dynamic forces in these areas are increased causing the high costs of the railway infrastructure maintenance.

In the framework of the DINATRANS project it has been possible to study what happens in the track transitions and to try to modify the track structure. The aim of the track modifications was to create a more gradual rail support transition on both sides of the structure.

The goal of the study, described in this paper, was to solve the problem of increasing dynamic forces in transition areas by combining different superstructure configurations. A number of track transition models have been developed and analysed numerically using the finite element software DARTS_NL (developed at TU Delft). The dynamic train-track interaction in transition zones with high and low vertical stiffness has been simulated and the effects of various different track design modifications have been analysed.

The results have shown that the rail displacement and ballast stresses in the transition zone can be significantly reduced by making small changes in the track superstructure elements (rails and sleepers). The results obtained (including the best modification) are presented and discussed.

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 £45 +P&P)

	Computational & Technology Resources an online resource for computational, engineering & technology publications
	not logged in - login
Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 105 PROCEEDINGS OF THE NINTH INTERNATIONAL CONFERENCE ON ENGINEERING COMPUTATIONAL TECHNOLOGY Edited by: Paper 17 A Numerical Study on the Improvement of Track Transitions using Modifying Superstructure Elements R. Sañudo¹, V.L. Markine² and L. Dell'Olio¹ ¹Department of Transport and Technology of Projects and Process, University of Cantabria, Spain ²Department Road and Railway Engineering, Delft University of Technology, The Netherlands doi:10.4203/ccp.105.17 purchase the full-text of this paper Full Bibliographic Reference for this paper , "A Numerical Study on the Improvement of Track Transitions using Modifying Superstructure Elements", in , (Editors), "Proceedings of the Ninth International Conference on Engineering Computational Technology", Civil-Comp Press, Stirlingshire, UK, Paper 17, 2014. doi:10.4203/ccp.105.17 Keywords: high speed, track transition, stiffness, superstructure, rails, sleepers. Summary A great problem of the Spanish high speed railways continues to be the track transitions between embankments and engineering structures. The dynamic forces in these areas are increased causing the high costs of the railway infrastructure maintenance. In the framework of the DINATRANS project it has been possible to study what happens in the track transitions and to try to modify the track structure. The aim of the track modifications was to create a more gradual rail support transition on both sides of the structure. The goal of the study, described in this paper, was to solve the problem of increasing dynamic forces in transition areas by combining different superstructure configurations. A number of track transition models have been developed and analysed numerically using the finite element software DARTS_NL (developed at TU Delft). The dynamic train-track interaction in transition zones with high and low vertical stiffness has been simulated and the effects of various different track design modifications have been analysed. The results have shown that the rail displacement and ballast stresses in the transition zone can be significantly reduced by making small changes in the track superstructure elements (rails and sleepers). The results obtained (including the best modification) are presented and discussed. 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 £45 +P&P)
Back to top	©Civil-Comp Limited 2023 - terms & conditions