Abstract
The main aim of this paper is to quantify the long-term behaviour of a high-speed transition zone between embankment and bridge capturing correctly the longitudinal and vertical variability of track properties with low computational costs. In order to do so, a methodology has been proposed consisting of three main modules (i.e. dynamic module, superposition module and settlement module) that are iteratively called until a stopping criteria is met. A FE model informs the dynamic module through receptance and cross-receptance curves and an additional FE model is used to pre-calculate the stress level under a unit load. In this paper, the composite track stiffness is calculated and the areas with highest dynamic loading rate are analysed in detail for the direction of travel towards the bridge. The model is then used to assess the role of the travelling speed in the short- and in the long-term track behaviour.
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Acknowledgement
This paper has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No: 826255 and from the EPRSC project Track2Future (grant agreement No. EP/M025276/1).
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Grossoni, I., Hawksbee, S., Jorge, P., Bezin, Y. (2022). Modelling the Long-Term Behaviour of a High-Speed Railway Transition Zone Using a Lumped Parameter Track Model. In: Pellegrino, C., Faleschini, F., Zanini, M.A., Matos, J.C., Casas, J.R., Strauss, A. (eds) Proceedings of the 1st Conference of the European Association on Quality Control of Bridges and Structures. EUROSTRUCT 2021. Lecture Notes in Civil Engineering, vol 200. Springer, Cham. https://doi.org/10.1007/978-3-030-91877-4_140
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DOI: https://doi.org/10.1007/978-3-030-91877-4_140
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