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A. Ramos, A. Gomes Correia, R. Calçada, "Performance of a Ballastless Track in a Transition Zone and the Influence of the Train Speed", in J. Pombo, (Editor), "Proceedings of the Sixth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 7, Paper 17.5, 2024, doi:10.4203/ccc.7.17.5

Keywords: ballastless track, transition zone, train speed, high-speed lines, permanent deformation, cyclic loading.

Abstract

The ballastless track is the most popular railway system nowadays. This is due to the associated reduced maintenance costs and operations. However, their performance in transition zones is a major concern of the Railway Infrastructure Managers. These areas are characterized by an abrupt change in the track stiffness, which leads to the development of differential settlements. Thus, it is crucial to have a methodology able to accurately predict the performance of the ballastless tracks in transition zones, mostly in the scope of high-speed lines. This work presents a detailed analysis regarding the evaluation of the performance of a ballastless track in an embankment-tunnel transition zone considering the influence of the train speed. In this analysis six different train speeds were adopted: 220 km/h, 360 km/h, 500 km/h, and 600 km/h. Moreover, the influence of the critical speed is also evaluated. The adopted and developed methodology is a novel and hybrid approach that allows including short-term and long-term performance, through the development of a powerful 3D model combined with the implementation of a calibrated empirical permanent deformation model.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 7 PROCEEDINGS OF THE SIXTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 17.5 Performance of a Ballastless Track in a Transition Zone and the Influence of the Train Speed A. Ramos¹, A. Gomes Correia² and R. Calçada¹ ¹CONSTRUCT-LESE, Faculty of Engineering, University of Porto, Porto, Portugal ²ISISE, School of Engineering, University of Minho, Guimarães, Portugal doi:10.4203/ccc.7.17.5 Full Bibliographic Reference for this paper A. Ramos, A. Gomes Correia, R. Calçada, "Performance of a Ballastless Track in a Transition Zone and the Influence of the Train Speed", in J. Pombo, (Editor), "Proceedings of the Sixth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 7, Paper 17.5, 2024, doi:10.4203/ccc.7.17.5 Keywords: ballastless track, transition zone, train speed, high-speed lines, permanent deformation, cyclic loading. Abstract The ballastless track is the most popular railway system nowadays. This is due to the associated reduced maintenance costs and operations. However, their performance in transition zones is a major concern of the Railway Infrastructure Managers. These areas are characterized by an abrupt change in the track stiffness, which leads to the development of differential settlements. Thus, it is crucial to have a methodology able to accurately predict the performance of the ballastless tracks in transition zones, mostly in the scope of high-speed lines. This work presents a detailed analysis regarding the evaluation of the performance of a ballastless track in an embankment-tunnel transition zone considering the influence of the train speed. In this analysis six different train speeds were adopted: 220 km/h, 360 km/h, 500 km/h, and 600 km/h. Moreover, the influence of the critical speed is also evaluated. The adopted and developed methodology is a novel and hybrid approach that allows including short-term and long-term performance, through the development of a powerful 3D model combined with the implementation of a calibrated empirical permanent deformation model. download the full-text of this paper (PDF, 9 pages, 971 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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