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A Mathematical Approach for Recreation Non-symmetric 2D Railway Alignments

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Advances in Computational Mechanics and Applications (OES 2023)

Part of the book series: Structural Integrity ((STIN,volume 29))

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The constant passage of trains on the railways tracks causes, in the course of time, geometric deviations that must be corrected periodically by means of a track calibration process. It consists of designing a new horizontal alignment, called recreated alignment, as close as possible to the deformed center track fulfilling also the technical constraints according to the operational requirements of the railway. In recent years different models have been proposed to address this task. This paper proposes, firstly, a new geometrical model for the definition of horizontal alignments to deal with non symmetric transition curves at both sides of a circular curve and secondly, a two-stage optimization algorithm to compute the recreated alignment. The usefulness of this model is tested with two academic examples showing its good behavior. The paper ends with a conclusions section in which a brief description of future work is also presented.

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This research was funded by Ministerio de Ciencia e Innovación (Spain) grant number TED2021-129324B-I00, and by the collaboration agreement between Xunta de Galicia (Spain) and Universidade de Santiago de Compostela (Spain) which regulates the Specialization Campus “Campus Terra”. Finally, second authors thanks the support given by Xunta de Galicia (Spain) under research projects ref. ED341D R2016/023 and third author has received financial support from the Xunta de Galicia (2021 GRC GI-1563-ED431C2021/15).

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Correspondence to Duarte Santamarina .

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Casal, G., Castro, A., Santamarina, D., Vázquez-Méndez, M.E. (2024). A Mathematical Approach for Recreation Non-symmetric 2D Railway Alignments. In: Pavlou, D., et al. Advances in Computational Mechanics and Applications. OES 2023. Structural Integrity, vol 29. Springer, Cham.

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  • Print ISBN: 978-3-031-49790-2

  • Online ISBN: 978-3-031-49791-9

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