中国铁道科学2025，Vol.46Issue(2)：72-81,10.DOI:10.3969/j.issn.1001-4632.2025.02.07
地铁列车动静态气密性指数关系动模型试验研究
Research on the Relationship between Dynamic and Static Air-Tightness Indices of Metro Train Using Moving Model Test
摘要
Abstract
The research on the relationship between dynamic and static air-tightness of metro trains is of great significance for train air-tightness design and passenger comfort improvement.Given the high cost of full-scale testing and the difficulty in controlling test conditions,the dynamic and static air-tightness relationship of metro trains was studied using a scaled moving model test method.A new 1∶20 scale metro train model with a sealed cabin structure and adjustable air-tightness was constructed.Static and dynamic air-tightness tests were conducted on the system.The results show that there is a power-law relationship between the static air-tightness index and the leakage area of the scaled train model,with an exponent of-1.0041.The dynamic air-tightness index of the train model increases progressively from the head car to the tail car.Under the four leakage area models,the percentage increase of the dynamic air-tightness index from the head car to the tail car rises with the leakage area,reaching 338%,391%,400%,and 580%,respectively.The dynamic and static air-tightness indices ratio of the head car measurement points is less affected by changes in the leakage area,while the ratios for the middle car and tail car measurement points increase with the leakage area.Under the four leakage area models,the dynamic and static air-tightness indices ratios of the head car,middle car and tail car fall within the range of 0.15-0.26,0.28-0.54 and 0.49-0.98,respectively.关键词
地铁列车/动静态气密性指数/泄漏面积/缩比列车模型/动模型试验Key words
Metro train/Dynamic and static air-tightness indices/Leakage area/Scaled train model/Moving model test分类
交通工程引用本文复制引用
熊小慧,禹霖,夏玉涛,李杨..地铁列车动静态气密性指数关系动模型试验研究[J].中国铁道科学,2025,46(2):72-81,10.基金项目
湖南省重点研发计划项目(2024JK2037) （2024JK2037）
