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CLC number:
On-line Access: 2023-11-17
Received: 2023-07-01
Revision Accepted: 2023-10-15
Crosschecked: 0000-00-00
Cited: 0
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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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