Research on Clearance Area of Single Track Tunnel for Medium and Low Speed Maglev Traffic Based on Passenger Pressure Comfort

Chao WANG; Yao JIANG; Kui LI; Yuangui MEI

doi:10.13890/j.issn.1000-128x.2020.06.017

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Research on Clearance Area of Single Track Tunnel for Medium and Low Speed Maglev Traffic Based on Passenger Pressure Comfort

Maglev Technology Column | 更新时间：2021-12-09

- Research on Clearance Area of Single Track Tunnel for Medium and Low Speed Maglev Traffic Based on Passenger Pressure Comfort
- Electric Drive for Locomotives Issue 6, Pages: 80-84(2020)
- 作者机构：
  
  1.兰州交通大学　甘肃省轨道交通力学应用工程实验室，甘肃　兰州　730070
  2.中铁二院工程集团有限责任公司　科学技术研究院，四川　成都　610031
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128x.2020.06.017
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Chao WANG, Yao JIANG, Kui LI, et al. Research on Clearance Area of Single Track Tunnel for Medium and Low Speed Maglev Traffic Based on Passenger Pressure Comfort. [J]. Electric Drive for Locomotives (6):80-84(2020)
DOI：

Chao WANG, Yao JIANG, Kui LI, et al. Research on Clearance Area of Single Track Tunnel for Medium and Low Speed Maglev Traffic Based on Passenger Pressure Comfort. [J]. Electric Drive for Locomotives (6):80-84(2020) DOI： 10.13890/j.issn.1000-128x.2020.06.017.

摘要

列车快速通过隧道会引起剧烈的压力波现象，带来乘客耳感不适问题。为减缓剧烈的压力波和保证乘客舒适性，需要合理确定隧道净空面积。文章采用一维可压缩非定常不等熵流动模型广义黎曼变量特征线法模拟隧道压力波，研究中低速磁浮列车在通过单线隧道过程中车内每3 s压力变化的基本特征，得出了列车速度、阻塞比、隧道长度和车体气密性对车内每3 s压力变化影响的基本特性。根据国内铁路压力舒适性标准，提出了不同车体气密性下的单线磁浮交通隧道净空面积建议值，可为拟建的中低速磁浮线路隧道净空面积比选设计提供技术支撑。

Abstract

The rapid train passing through the tunnel will cause severe pressure wave phenomenon, which will lead to the problem of passengers' ear discomfort. In order to reduce the severe pressure wave and ensure the comfort of passengers, it is necessary to make a reasonable clearance area of the tunnel. In this paper, a one-dimensional compressible unsteady isentropic flow model and generalized Riemannian variable characteristic line method were used to simulate the pressure wave in the tunnel, and the basic characteristics of the pressure change in the vehicle every 3 seconds during the middle and low speed maglev train passing through the single track tunnel were studied. The basic characteristics of the influence of train speed, blocking ratio, tunnel length and air tightness of the car body on the pressure change in the car every 3 seconds were obtained. According to the domestic railway pressure comfort standards, the proposed values of single track maglev tunnel clearance area under different car body air tightness were provided, which could support the design of medium and low speed maglev line tunnel clearance area.

关键词

中低速磁浮列车单线隧道压力波一维流动模型特征线法

Keywords

medium and low speed maglev trainsingle track tunnelpressure waveone dimensional flow modelcharacteristic line method

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