动车组通过隧道车内外瞬变压力实车试验  

Real train test on transit pressure internal and external vehicle when high-speed train travels through tunnels

作　　者：马冰冰 王宗昌 周新喜 熊小慧[2] MA Bingbing;WANG Zongchang;ZHOU Xinxi;XIONG Xiaohui(CRRC Qingdao Sifang Locomotive Rolling Stock Co.,Ltd.,Qi ngdao 266111,China;Key Laboratory of Traffic Safety on Track,Central South University,Ministry of Education,Changsha 410075,China)

机构地区：[1]中车青岛四方机车车辆股份有限公司,山东青岛266111 [2]中南大学轨道交通安全教育部重点实验室,湖南长沙410075

出　　处：《中国高新科技》2022年第6期86-88,共3页

摘　　要：在合武铁路和石太客运专线进行了列车高速通过隧道时动车组车内、外瞬变压力实车试验,试验表明:动车组单列通过隧道时,车体表面瞬变压力幅值与列车运行速度的平方成正比,车内瞬变压力幅值与列车运行速度n次方成正比,n的取值范围为1.3~1.8,该值随着隧道长度的变化而变化;动车组250km/h单列通过同一断面、不同长度双线隧道时,存在一个最不利隧道长度L=1080m,此时车内3s压力变化幅值最大;列车以同一速度等级通过不同断面隧道时所产生的车体表面压力变化幅值近似与隧道阻塞比成线性关系。Real train test on the transient pressure variations internal and external vehicle was carried out when high-speed train travelled through tunnels in Hefei-Wuhan and Shijiazhuang-Taiyuan railway lines.External transient pressure amplitude is proportional to the square of train speed.Internal transient pressure amplitude is proportional to the train speed n power and number n is between the ranges of 1.3 to 1.8.Number n varies with the changes of tunnel lengths.The worst length tunnel exists when high speed train ran through tunnels with different length and the same cross-section.There is maximum pressure variation amplitude per 3 seconds internal vehicle when train ran through the worst length tunnels.Eexternal transient pressure amplitude is approximately proportional to train-tunnel dimension ratio when the same high speed train enters different cross-section tunnels.

关 键 词：高速列车 空气动力学 实车试验 隧道 瞬变压力 隧道长度 隧道阻塞比 

分 类 号：U270[机械工程—车辆工程]