Dynamic train wheel loads, which can be significantly greater than static loads, occur because of a variety of factors and unless they are properly considered in track structural design, significant unplanned maintenance and premature track failure may result. This is particularly so for traditional ballasted railways built on soft foundations, because although ballast lends itself to maintenance, it is often problematic and costly to repair damaged foundations. A novel rigorous analytical–numerical approach is described to predict and characterize, for the first time, the damage to which railway foundations can be subjected as a result of dynamic loads. The approach marries a sophisticated three-dimensional dynamic model of the train–track system incorporating vertical track quality, foundation soil distress models, statistical analysis methods, and results of field investigation. The resulting analyses demonstrate that the magnitudes and distributions of dynamic loads are a function of train speed and track quality, and that specific locations experience significantly higher amounts of damage, which can lead to a variety of track faults. The approach is illustrated via a study of a heavy haul railway line in China where the wheel loads and tonnage carried are set to increase significantly. Findings from the study suggest that the thickness of the ballasted layer would need to increase by over 20% to prevent premature foundation failure provided that the track is maintained in good condition, and by significantly more should the track condition be allowed to deteriorate.


    Zugriff

    Download

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Assessing the Damaging Effects of Railway Dynamic Wheel Loads on Railway Foundations


    Weitere Titelangaben:

    Transportation Research Record


    Beteiligte:
    Burrow, Michael P. N. (Autor:in) / Shi, Jin (Autor:in) / Wehbi, Mohamed (Autor:in) / Ghataora, Gurmel S. (Autor:in)


    Erscheinungsdatum :

    2017-01-01




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    RAILWAY WHEEL

    KUBOTA MANABU | Europäisches Patentamt | 2017

    Freier Zugriff

    Railway wheel

    GOLYSHKOV ROMAN ANATOLIEVICH / KERENTSEV DMITRY EVGENIEVICH | Europäisches Patentamt | 2016

    Freier Zugriff

    RAILWAY WHEEL

    MAEJIMA TAKETO / OSAKA TARO / YAMAMOTO YUICHIRO et al. | Europäisches Patentamt | 2024

    Freier Zugriff

    Railway wheel

    MAEJIMA TAKETO / OSAKA TARO / YAMAMOTO YUICHIRO et al. | Europäisches Patentamt | 2024

    Freier Zugriff

    Railway wheel

    MAEJIMA TAKETO / KUBOTA MANABU | Europäisches Patentamt | 2022

    Freier Zugriff