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.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

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


    Beteiligte:
    Zhai, Zhihao (Autor:in) / Zhu, Shengyang (Autor:in) / Yang, Yun (Autor:in) / Luo, Jun (Autor:in) / Cai, Chengbiao (Autor:in)

    Erschienen in:

    Vehicle System Dynamics ; 61 , 10 ; 2613-2637


    Erscheinungsdatum :

    03.10.2023


    Format / Umfang :

    25 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt





    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 Archiv | 1974


    Longitudinal Track-Train Dynamics: a new approach

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