中南大学学报（自然科学版）2017，Vol.48Issue(5)：1404-1412,9.DOI:10.11817/j.issn.1672-7207.2017.05.037
基于实车试验的高速列车隧道压力波影响因素
Influential factors of tunnel pressure wave on high-speed train by real vehicle test
摘要
Abstract
A real train online high-precision test platform for the train aerodynamics was built and real train tests on pressure waves generated by a train passing through a tunnel and by two trains meeting in the tunnel were performed. The influence of the running speed, tunnel length, blockage ratio, train marshalling, meeting location and other factors on the tunnel pressure wave was explored. According to the compression wave inside the tunnel, the expansion wave propagation in tunnel, reflection, the principle of superposition, formulas to calculate the most unfavorable single-track and double-track tunnel length, the most unfavorable meeting locations, the most unfavorable train marshalling length etc., were derived. The results show that the car body surface pressure amplitude is proportional to the square of the train speed. Interior pressure amplitude and train speed are in the direct ratio ofn, andn is the range of 1.3?1.8, andn varies as the tunnel length. It provides a guidance to calculate and assess of the high-speed train tunnel pressure waves. The research results can provide the pressure wave evaluation basis for the safety of high-speed train running in the tunnel.关键词
高速列车/隧道交会/隧道/压力波Key words
high-speed train/tunnel intersection/tunnel/pressure wave分类
交通工程引用本文复制引用
韩运动,姚松,陈大伟,梁习锋..基于实车试验的高速列车隧道压力波影响因素[J].中南大学学报（自然科学版）,2017,48(5):1404-1412,9.基金项目
国家自然科学基金资助项目(U1134250, 51405517) (Projects(U1134250, 51405517) supported by the National Natural Science Foundation of China) （U1134250, 51405517）
