华东交通大学学报Issue(2)：32-36,90,6.
轨道交通列车不同运行速度下噪声特性对比研究
Comparative Study on Noise Characteristics of Rail Traffic Vehicles at Different Speeds
摘要
Abstract
Based on the test and analysis of the rail traffic noise produced by the vehicles running on the testing line in Tongji University, this paper studies noise levels of rail traffic vehicles in different conditions, and the noise intensity and spectrum characteristics are recorded accordingly. The results indicate that the noise value at each monitoring point increases instantly as the velocity of the vehicle climbs up when the speed is below 47km/h, and it almost tends to be a linear increase, specifically, in spite of the four different conditions of vehicle speed, the noise value increases unanimously as the distance between the monitoring point and the noise producer decreases and the height increases, and vice versa. At different speeds, all the peak frequencies from each monitoring point are around 800 Hz while the main range of the noise energy varies regularly as the vehicle speed changes, that is, the main range of the noise energy approaches 800 Hz gradually with the increasing speed of the vehicle. The re-sults may provide the statistical and scientific basis for the measures of controlling the rail traffic noise and its pre-diction.关键词
轨道交通/速度/噪声/频谱特性Key words
rail traffic/speed/noise/spectrum characteristics分类
交通工程引用本文复制引用
孙维娜,李莉,罗雁云..轨道交通列车不同运行速度下噪声特性对比研究[J].华东交通大学学报,2014,(2):32-36,90,6.基金项目
国家科技支撑计划（2009BAG11B02）；中央高校科研基金项目 （）
