Affiliation(s):
Bridge and Tunnel Research Center, Research Institute of Highway Ministry of Transport, Beijing 100088, China;
moreAffiliation(s): Bridge and Tunnel Research Center, Research Institute of Highway Ministry of Transport, Beijing 100088, China; Tunnel and Underground Engineering Research Center of Ministry of Education, Beijing Jiaotong University, Beijing 100044, China;
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Jianming DU, Qian FANG, Xuan ZHANG, Hualao WANG. Comparative analysis between single-train passing and double-train intersection in a tunnel[J]. Journal of Zhejiang University Science A,in press.Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/jzus.A2300339
@article{title="Comparative analysis between single-train passing and double-train intersection in a tunnel", author="Jianming DU, Qian FANG, Xuan ZHANG, Hualao WANG", journal="Journal of Zhejiang University Science A", year="in press", publisher="Zhejiang University Press & Springer", doi="https://doi.org/10.1631/jzus.A2300339" }
%0 Journal Article %T Comparative analysis between single-train passing and double-train intersection in a tunnel %A Jianming DU %A Qian FANG %A Xuan ZHANG %A Hualao WANG %J Journal of Zhejiang University SCIENCE A %P %@ 1673-565X %D in press %I Zhejiang University Press & Springer doi="https://doi.org/10.1631/jzus.A2300339"
TY - JOUR T1 - Comparative analysis between single-train passing and double-train intersection in a tunnel A1 - Jianming DU A1 - Qian FANG A1 - Xuan ZHANG A1 - Hualao WANG J0 - Journal of Zhejiang University Science A SP - EP - %@ 1673-565X Y1 - in press PB - Zhejiang University Press & Springer ER - doi="https://doi.org/10.1631/jzus.A2300339"
Abstract: Aerodynamic pressure significantly impacts the scientific evaluation of tunnel service performance. The aerodynamic pressure of two trains running in a double-track tunnel is considerably more complicated than that of a single train. We used the numerical method to investigate the difference in aerodynamic pressure between a single train and two trains running in a double-track tunnel. First, the numerical method was verified by comparing the results of numerical simulation and on-site monitoring. Then, the characteristics of aerodynamic pressure were studied. Finally, the influence of various train-tunnel factors on the characteristics of aerodynamic pressure were investigated. The results show that the aerodynamic pressure variation can be divided into Stage I: irregular pressure fluctuations before the train tail leaves the tunnel exit, and Stage II: periodic pressure decline after the train tail leaves the tunnel exit. In addition, the aerodynamic pressure simultaneously jumps positively or drops negatively for a single train or two trains running in double-track tunnel scenarios. The pressure amplitude in the two-train case is higher than that for a single train. The PSTP/PSTN (maximum positive peak pressure difference / maximum negative peak pressure difference) increases as train speed rises to the power from 2.256 to 2.930 in Stage I. The PSTP/PSTN first increases and then decreases with the increase of tunnel length in Stage I. The PSTP/PSTN increases as the blockage ratio rises to the power from 2.032 to 2.798 in Stages I and II.
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