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Keywords: railway track in-situ testing, numerical modeling, transition zones, dynamic behaviour.

Abstract

The French high speed line network is for the most part composed of ballasted track. Nonetheless in 2007, a new experimental slab track was constructed in the new East European High speed line, from Paris to Strasbourg, operating at 320 km/h. Special transition zones then were designed and constructed in order to provide the correct stiffness transition between the two different structures. The main goal of this paper is to present the case history regarding the performance of these transition zones after some years of operation. For this purpose an in-situ experimental campaign was performed on track. In addition, numerical simulations were performed in order to provide a deeper insight into the mechanical behaviour of track and substructure. As a final application, the present work allowed us to define renewal works recommendations for these transition zones from ballast to ballastless track. The paper underlines the fact that the main challenges for an accurate transition zone design is not only to verify the stiffness transitions but also to verify the dynamic interaction between train and track and between superstructure and substructure components.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	International Journal of Railway Technology ISSN 2049-5358 IJRT, Volume 3, Issue 1, 2014 Railway Transitional Zones: A Case History from Ballasted to Ballastless Track S. Costa D'Aguiar¹, E. Arlaud¹, R. Potvin², E. Laurans² and C. Funfschillling¹ ¹SNCF - Innovation & Research Department, France ²SNCF - Engineering Department, France doi:10.4203/ijrt.3.1.2 purchase the full-text of this paper Full Bibliographic Reference for this paper S. Costa D'Aguiar, E. Arlaud, R. Potvin, E. Laurans, C. Funfschillling, "Railway Transitional Zones: A Case History from Ballasted to Ballastless Track", International Journal of Railway Technology, 3(1), 37-61, 2014. doi:10.4203/ijrt.3.1.2 Keywords: railway track in-situ testing, numerical modeling, transition zones, dynamic behaviour. Abstract The French high speed line network is for the most part composed of ballasted track. Nonetheless in 2007, a new experimental slab track was constructed in the new East European High speed line, from Paris to Strasbourg, operating at 320 km/h. Special transition zones then were designed and constructed in order to provide the correct stiffness transition between the two different structures. The main goal of this paper is to present the case history regarding the performance of these transition zones after some years of operation. For this purpose an in-situ experimental campaign was performed on track. In addition, numerical simulations were performed in order to provide a deeper insight into the mechanical behaviour of track and substructure. As a final application, the present work allowed us to define renewal works recommendations for these transition zones from ballast to ballastless track. The paper underlines the fact that the main challenges for an accurate transition zone design is not only to verify the stiffness transitions but also to verify the dynamic interaction between train and track and between superstructure and substructure components. 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 IJRT purchase this issue (price £70 +P&P)
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