An iterative simulation procedure for the prediction of differential settlement of ballast/subgrade in a transition zone between two track forms is presented. The procedure is based on a time-domain model of vertical dynamic vehicle–track interaction to calculate the contact loads between sleepers and ballast in the short-term, which are then used in an empirical model to determine the settlement of ballast/subgrade below each sleeper in the long-term. The procedure is applied for a transition zone between a 3MB slab track and a ballasted track. Each sleeper in the ballasted track section is modelled by a discrete (rigid) mass. Non-linear sleeper support conditions and the possible development of hanging sleepers over time due to settlement are considered. For heavy-haul traffic, the influence of axle load and train speed on the long-term settlement at the transition is studied in a demonstration example.


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    Title :

    Prediction of Differential Track Settlement in Transition Zones Using a Non-Linear Track Model


    Additional title:

    Lect.Notes Mechanical Engineering


    Contributors:

    Conference:

    The IAVSD International Symposium on Dynamics of Vehicles on Roads and Tracks ; 2021 August 17, 2021 - August 19, 2021



    Publication date :

    2022-08-06


    Size :

    11 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




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