High-pier railway bridges are mostly applied in mountainous areas. Due to the large spatial flexibility of the high piers under train dynamic loads, especially under braking conditions, the wheel-rail (WR) dynamic interaction may become more intense in the longitudinal direction, which could induce larger deformation and impact on the train-track-bridge (TTB) coupled system. To investigate the dynamic characteristics of such complex and large system during train braking condition, a 3D train-slab track-high pier bridge (TTHPB) coupled dynamics model is established and verified by considering the system longitudinal vibrations and the spatial flexibility of high piers. In this work, the influence of concerned bridge height from 60 to 160 m on the dynamic performances of the TTHPB system under train braking condition is studied. Results indicate that the operation speed has a significant effect on carbody acceleration and WR force. The longitudinal carbody acceleration due to its high-frequency vibration, as well as its noticeable amplitude induced by the long-time frequent braking, should be carefully considered in the evaluation of riding comfort index. The longitudinal dynamic behaviour of the high pier bridge is considerable and should be paid full attention to in bridge design compared with the other two directions.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Dynamics analysis of train-track-bridge coupled system considering spatial flexibility of high piers and system longitudinal vibrations


    Contributors:
    Zhai, Zhihao (author) / Zhu, Shengyang (author) / Yang, Yun (author) / Luo, Jun (author) / Cai, Chengbiao (author)

    Published in:

    Vehicle System Dynamics ; 61 , 10 ; 2613-2637


    Publication date :

    2023-10-03


    Size :

    25 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown





    Influence of Fluctuating Gust on Metro Train-Bridge System with High Piers

    Zhang, Yunfei / Li, Li / Chen, Zhaowei | TIBKAT | 2022


    Integration of car-body flexibility into train–track coupling system dynamics analysis

    Ling, Liang / Zhang, Qing / Xiao, Xinbiao et al. | Taylor & Francis Verlag | 2018


    Longitudinal track-train dynamics: a new approach

    Genin, J. / Ginsberg, J.H. / Ting, E.C. | Tema Archive | 1974


    Longitudinal Track-Train Dynamics: a new approach

    Genin, J. / Ginsberg, J. / Ting, E. | Tema Archive | 1974