400km/h速度下编组长度对高速列车隧道交会压力波的影响  

The influence of formation length on pressure wave characteristics of high-speed train pass by each other in tunnel with 400km/h

作　　者：钟沙 钱博森 杨明智[1] 尹小放 苏伟华 ZHONG Sha;QIAN Bosen;YANG Mingzhi;YIN Xiaofang;SU Weihua(Key Laboratory of Traffic Safety on Track,School of Traffic&Transportation Engineering,Central South University,Changsha 410075,China)

机构地区：[1]中南大学交通运输工程学院,轨道交通安全教育部重点实验室,湖南长沙410075

出　　处：《铁道科学与工程学报》2021年第8期1978-1985,共8页Journal of Railway Science and Engineering

基　　金：国家自然科学基金资助项目(11372360);湖南省研究生科研创新资助项目(2019zzts147)。

摘　　要：基于三维非定常可压缩雷诺时均N-S方程与k-ε两方程湍流模型,采用滑移网格方法,对400km/h速度等级下不同编组长度(3车编组,8车编组,16车编组)列车于各自最不利长度隧道的等速交会工况进行模拟。对比数值计算与动模型试验结果,两者同一测点压力峰峰值相差不超过3.6%,验证了数值计算的可靠性。研究结果表明:列车表面压力峰峰值由头车至尾车呈下降趋势;随着编组长度由3车增加到16车,列车表面最大压力峰峰值由12.05 kPa增加到15.18 kPa;隧道壁面最大压力峰峰值由14.73 kPa增加至19.19 kPa。Based on the three-dimensional unsteady compressible Reynolds time averaged N-S equation and k-εturbulence model,by using sliding mesh method,different railcarlength configurations(3 cars,8-cars,and 16 cars)passing by each other in tunnel of the most unfavorable length with 400km/h were simulated.Meanwhile,the characteristics of alternating pressure load on the train surface and tunnel wall were analyzed.By comparing the results of numerical calculation and moving model test,the relative error of peak-to-peak pressure valuesat the same measuring point was below 3.6%,which verifies the reliability of numerical calculation.The results show that peak-to-peak pressure valuesof train surface decreased from the head car to the tail car,and with the increase of the number of railcars from 3 to 16,the maximum peak-to-peak pressure values of train surface increased from12.05 kPa to 15.18 kPa,the minimum values only increasedfrom 9.52 kPa to 9.81 kPa,and the maximum peak-topeak pressure values of tunnel wall increased from 14.73 kPa to 19.19 kPa.

关 键 词：400km/h 高速列车 编组长度 隧道交会 交变压力 

分 类 号：U270.2[机械工程—车辆工程]