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- W2189287091 abstract "All components of the track suffer from a variation in the performance during their lifetime to a different degree. These variations include replacement of timber sleepers with concrete sleepers and changes in the ballast conditions due to tamping or track accumulative loadings. These changes sometimes cause a large discrepancy between results obtained form theoretical evaluations and those obtained from field measurements, making the reliability of the current understanding of the long term behavior of the railway track questionable. There is a need to investigate the impact of the changes in conditions of the track support system on the track design parameters. This research is an attempt to response to this need. In this paper, the influences of the changes in rail support conditions on the magnitude of the rail bending moments (as the main rail design criterion) are investigated. This is achieved through parametric analyses of railway track by developing a theoretical model using dynamic deflection method. The model developed here, considers the main track components and offers the possibility of parametric analyses. The reliability of the model was evaluated by comparing the results obtained from the model with those obtained from measurements in a track field. After calibrating the model, it is used to conduct parametric analyses. The sensitivity of the rail bending moment to the changes in sleeper type and arrangements, and to the ballast mechanical conditions is investigated. The results are discussed aiming at to improve the current understanding of the long term behavior of railways." @default.
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- W2189287091 date "2008-09-01" @default.
- W2189287091 modified "2023-09-27" @default.
- W2189287091 title "INFLUENCES OF RAIL SUPPORT CONDITIONS ON MECHANICAL BEHAVIOR OF RAILWAY TRACK SYSTEM" @default.
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- W2189287091 doi "https://doi.org/10.1139/tcsme-2008-0038" @default.
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