武广客运专线高速列车气动载荷谱研究及应用  

High-Speed EMU Aerodynamic Load Spectrum Research and Application Based on Wuhan to Guangzhou Passenger Dedicated Line

作　　者：程亚军 周丹[1] 杨明智[1] 王家兴 CHENG Yajun;ZHOU Dan;YANG Mingzhi;WANG Jiaxing(School of Traffic and Transportation Engineering,Central South University,Changsha 410075,China;CRRC Changchun Railway Vehicles Co.,Ltd,Changchun 130062,China)

机构地区：[1]中南大学交通运输工程学院,湖南长沙410075 [2]中车长春轨道客车股份有限公司国家轨道客车工程研究中心,吉林长春130062

出　　处：《大连交通大学学报》2023年第3期13-20,40,共9页Journal of Dalian Jiaotong University

基　　金：中国国家铁路集团有限公司基金资助项目(K2021J041)。

摘　　要：为解决既有标准中气动载荷不适用于我国高速列车运营条件的问题,依据相关标准和空气动力学仿真分析方法,研究我国典型客运专线的高速动车组气动疲劳载荷谱。首先,建立某高速列车的空气动力学分析模型;然后,结合BS EN 14067:2021标准和仿真分析结果,研究武广客运专线的明线交会、隧道通过、隧道交会情况下动车组车体承受的气动载荷特点;最后,依据武广线列车交会图、隧道长度和压力波分析的结果,统计出列车在不同隧道长度的压力变化范围及其频次,并通过对压力波数据的雨流计数分析,获得了时速300、350 km列车头车和尾车均幅值载荷谱。将该载荷谱应用于高速动车组车体焊缝的气动疲劳分析中,分析结果表明,速度提升对气动疲劳损伤影响较大,时速350 km运行时损伤是时速300 km运行时的6.7~10倍。In order to address the issue of the inapplicability of existing standards'aerodynamic loads to the operating conditions of high-speed trains in our country,this study investigates the aerodynamic fatigue load spectrum of high-speed trainsets on a typical passenger railway line in China,utilizing relevant standards and aerodynamic simulation analysis methods.An aerodynamic analysis model of a high-speed train is established.In accordance with the BS EN 14067:2021 standard and simulation analysis results,the aerodynamic load characteristics on the train car body are examined under scenarios such as open field intersections,tunnel passages,and tunnel intersections along the Wuhan-Guangzhou passenger railway line,which features a significant number of tunnels.Moreover,based on the train intersection diagram,tunnel length,and pressure wave analysis of the Wuhan-Guangzhou railway line,the pressure variation range and frequency for trains at different tunnel lengths are calculated.Through rain flow counting analysis of the pressure wave data,the average amplitude load spectrum for the leading and trailing cars of trains traveling at speeds of 300 km/h and 350 km/h is derived.This load spectrum is then applied to the aerodynamic fatigue analysis of the high-speed train car body weld seam.The analysis results indicate that increased speed significantly impacts aerodynamic fatigue damage,with the damage incurred at 350 km/h being 6.7-10 times greater than that at 300 km/h.

关 键 词：高速动车组 空气动力学 气动载荷谱 疲劳损伤 

分 类 号：U266[机械工程—车辆工程]