高速铁路动车组列车的噪声特性  

Noise characteristics of China railway high-speed

作　　者：俞悟周[1] 王晨 毛东兴[1] 王佐民[1] 姜在秀[1] 万雯 

机构地区：[1]上海同济大学声学研究所,上海200092 [2]上海铁路城市轨道交通设计研究院,上海200070

出　　处：《环境污染与防治》2009年第1期74-77,共4页Environmental Pollution & Control

摘　　要：测量了车速达250km/h的高速铁路动车组列车不同距离、不同高度处的噪声,分析了其时间、频谱及空间分布特性,并与普通客运列车比较。结果表明,动车组列车噪声表现为较强的脉冲性,频谱较宽,为2500Hz内的宽频噪声,200Hz以下的低频成分很强;不同高度处最大声压级随距离的衰减规律基本类似,但不同高度处频谱不同。Noise levels of China railway high-speed （CRH） operating at 250 km/h were monitored and measured simultaneously at 12 points located at 4 distances （30,50,70 and 90 m） from the rail center and 3 heights （0,3 and 6 m above the rail）. The CRH noise characteristics （time and frequency profiles） were analyzed and compared with the same of an ordinary train operating at 120 km/h. The noise of CRH was impulsive with a wide frequency range up to 2 500 Hz. Below 200 Hz,noise of CRH was strong. The noise levels declined similarly with distance and height; the noise of each height had its own frequency profile pattern.

关 键 词：高速铁路 动车组 噪声 噪声测量 

分 类 号：U266[机械工程—车辆工程] U292.91[交通运输工程—载运工具运用工程]