高速磁浮列车隧道交会时洞内压力波动数值模拟研究  

Numerical Simulation of Pressure Fluctuation in Tunnel Caused by High-Speed Maglev Trains Passing Each Other

作　　者：贾永兴[1] 杨振 姚拴宝 梅元贵[1] JIA Yongxing;YANG Zhen;YAO Shuanbao;MEI Yuangui(Gansu Province Engineering Laboratory of Rail Transit Mechanics Application,Lanzhou Jiaotong University,Lanzhou Gansu 730070,China;National Engineering Research Center for High-Speed EMU,CRRC Qingdao Sifang Co.,Ltd.,Qingdao Shandong 266111,China)

机构地区：[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]中车青岛四方机车车辆股份有限公司国家总成工程技术研究中心,山东青岛266111

出　　处：《中国铁道科学》2020年第3期86-94,共9页China Railway Science

基　　金：国家重点研发计划项目(2016YFB1200602-39);兰州交通大学青年科学基金项目(2017010)。

摘　　要：应用一维可压缩非定常不等熵流动模型和广义黎曼变量特征线法,研究时速600 km等级高速磁浮列车交会时隧道内压力峰值的分布规律,分析隧道长度、隧道净空面积、列车运行速度和列车长度对列车交会时隧道内压力峰值的影响规律。结果表明:隧道中央测点的压力波动最剧烈,压力峰值以隧道中央位置为中心点往隧道2侧对称分布;列车运行速度为400~650 km·h^-1、列车编组为3~10辆时,基于隧道内压力峰值的最不利隧道长度在160~1000 m范围;隧道内压力峰值均随隧道净空面积增加而减小,随列车运行速度的增大而急剧增大,列车长度对其基本无影响;拟合发现隧道内压力峰值与隧道净空面积约-1.1^-1.4次幂成正比,与列车运行速度约2.0~3.8次幂成正比;当采用现有350 km·h^-1等级高速铁路双线隧道净空面积标准,并且2列列车以600 km·h^-1交会时,隧道内压力峰值高达±30 kPa,必须增大隧道净空面积或增设竖井等减压设施以满足ERRI医学健康标准。Using one-dimensional(1D)compressible unsteady non-homentropic flow model and the method of the characteristic line of generalized Riemann variable,the distribution of the pressure peak in the tunnel caused by maglev trains passing each other with the speed of 600 km·h^-1 was studied.The effects of tunnel length,tunnel clearance area,train velocity and the length of maglev train were analyzed.Results show that the pressure fluctuation of the central measuring point of the tunnel is the most intense,and the pressure peak is symmetrically distributed from the central position to the two sides of the tunnel.When the train velocity is 400~650 km·h^-1 and the train formation is 3~10 cars,the most unfavorable tunnel lengths based on the pressure peak in the tunnel range from 160 m to 1000 m.The pressure peak decreases with the increase of tunnel clearance area,and increases dramatically with the increase of train velocity.In addition,train length has almost no effect on it.It is found that the pressure peak in the tunnel is approximately proportional to the-1.1^-1.4 power of tunnel clearance area and 2.0~3.8 power of train velocity.If the existing clearance area standard of double-track tunnel for 350 km·h^-1 high-speed railway is adopted,the pressure peak in the tunnel is up to±30 kPa when two trains passing each other at the speed of 600 km·h^-1.It is recommended to increase the tunnel clearance area or add pressure relief facilities such as shaft to meet the ERRI medical health standards.

关 键 词：高速磁浮列车 隧道压力波 列车交会 隧道长度 隧道净空面积 列车运行速度 列车长度 

分 类 号：U451.3[建筑科学—桥梁与隧道工程] V211.3[交通运输工程—道路与铁道工程]