The objective of this study was to suggest a response analysis framework for railway tracks that are subjected to braking. An analytical formulation was developed, in which the rail–track system was modeled as an infinite beam supported by an orthogonal Winkler foundation consisting of linear springs in perpendicular directions. The spring constants were varied over a wide range in order to represent different track types. Braking loads were simulated as representative sets of vertical and longitudinal forces, either concentrated or distributed. Considering a realistic set of model parameters, the approach was demonstrated by evaluating the track responses for a single axle and for a full train. The computations included determination of axial rail stresses, forces at the base of a sleeper, and the associated friction demand required to resist longitudinal slippage. Based on these analyses, it is concluded that longitudinal track responses have a much longer influence zone compared to vertical track responses. This implies that calculations involving a full train must be done on a case-by-case basis, i.e. they cannot be deduced from a single axle analysis. It is also found that high values of friction demand may develop at the sleeper bases indicating possible slippage. Overall, the proposed formulation provides a highly adaptable and easily implementable first-order mechanistic tool for the analysis of track responses to decelerating vehicular loads.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Analyzing track responses to train braking


    Contributors:


    Publication date :

    2018-08-01


    Size :

    10 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Train braking system, braking method and train set

    ZHU YU / LIU WENJUN / QUAN QIONG et al. | European Patent Office | 2022

    Free access

    Train braking control method and train braking control system

    YANG LINA / DU QIAN / LIU SAIWU | European Patent Office | 2021

    Free access

    BRAKING SYSTEM TRAIN AND TRAIN

    WANG SHUHAI / YANG JIAN / ZHANG HONGWEI | European Patent Office | 2022

    Free access

    Passenger train braking

    Engineering Index Backfile | 1916


    Passenger train braking

    Engineering Index Backfile | 1912