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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

第12卷    第1期    总第63期    2015年2月

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文章编号:1672-7029(2015)01-0145-05
隧道活塞风模型试验研究
李炎1,周鸣镝2,孙三祥1,张健1

(1.兰州交通大学 环境与市政工程学院,甘肃 兰州 730070;
2.兰州市城市建设设计院,甘肃 兰州 730030
)

摘 要: 随着长及特长单线铁路隧道的大量修建,利用活塞风改善隧道内空气质量,降低隧道通风能耗已成为可能。国内外对于隧道压力波和隧道内列车空气阻力问题进行了较多研究,但对隧道活塞风全面系统性的研究较少。为此,根据相似原理,考虑模型的变态,采用全模型试验方法设计搭建隧道活塞风模型试验台,用于活塞风风速的测试。将试验值与理论计算值、原型转换试验值与理论计算值进行比较,结果表明活塞风速度的符合度较好。由此,取线性比尺为60,以水为工作介质的模型试验用于隧道活塞风研究是可行的。

 

关键字: 隧道;活塞风;相似原理;模型试验;理论计算

Model test study on piston wind of tunnels
LI Yan1, ZHOU Mingdi2, SUN Sanxiang1, ZHANG Jian1

1. School of Environmental Science and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;
2. Lanzhou City Construction Design Institute, Lanzhou 730030, China

Abstract:Along with the construction of increasing one-way long and special long railway tunnels, employing piston wind makes it possible to improve air quality and reduce ventilation energy consumption. Researches on tunnel pressure waves and train air resistance have been widely conducted both at home and abroad, but the tunnel piston wind has been seldom analyzed systematically. According to similar theory and model transformation, model test station was built to test the velocity of piston wind by experimental method with a full model. By comparing the experimental values, the theoretical calculation values, the prototype conversion test values and the theoretical calculation values, the results show that the satisfaction of piston wind velocity is high. Therefore this kind of model test is reliable for research on tunnel piston wind with the linear scale being 60 and the work medium being water.

 

Key words: tunnel; piston wind; similar theory; model test; theoretical calculation

ISSN 1672-7029
CN 43-1423/U

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