Train derailments in railway switches are becoming more and more common, which have caused serious casualties and economic losses. Most previous studies ignored the derailment mechanism when vehicles pass through the turnout. With this consideration, this work aims to research the 3D derailment coefficient limit and passing performance in turnouts through the quasi-static analysis and multi-body dynamic simulation. The proposed derailment criteria have considered the influence of creep force and wheelset yaw angle. Results show that there are two derailing stages in switch panel, which are climbing the switch rail and stock rail, respectively. The 3D derailment coefficient limit at the region of top width 5 mm to 20 mm is much lower than the main track rail, which shows that wheels are more likely to derail in this area. The curve radius before the switch rail is suggested to be set as 350 m. When the curve radius before turnout is 65 m, the length of the straight line between the curve and turnout needs to be larger than 3 m. This work can provide a good understanding of the derailment limit and give guidance to set safety criteria when vehicles pass through the turnout.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Assessment of derailment risk in railway turnouts through quasi-static analysis and dynamic simulation


    Contributors:
    Wang, Ping (author) / Lai, Jun (author) / Liao, Tao (author) / Xu, Jingmang (author) / Wang, Jian (author) / Chen, Rong (author)


    Publication date :

    2022-04-01


    Size :

    13 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Effect of lateral misalignment defects of rail joints on dynamic derailment behaviour in railway turnouts

    Lai, Jun / Xu, Jingmang / Liao, Tao et al. | Taylor & Francis Verlag | 2023


    Influence of the motion conditions of wheelsets on dynamic derailment behaviour of a bogie in railway turnouts

    Lai, Jun / Xu, Jingmang / Zheng, Zhaoguang et al. | Taylor & Francis Verlag | 2022


    Fast estimation of the derailment risk of a braking train in curves and turnouts

    Burgelman,N. / Li,Z. / Dollevoet,R. et al. | Automotive engineering | 2016


    Turnouts: The railway orphans

    Online Contents | 1994


    Quasi Static Derailment of a Railway Vehicle, Comparison Between Experimental and Simulation Results

    Aknin, P. / Ayasse, J. B. / Chollet, H. et al. | British Library Conference Proceedings | 1994