摘要
采用统计能量分析法,建立了地铁轮轨噪声预测模型,预测了某地铁的轮轨噪声,得出了如下结论：当地铁以60 km/h的速度运行时,轮轨总辐射噪声主要分布在中心频率为500~4000 Hz的一个较宽的频率范围内,其中钢轨辐射噪声主要分布在中心频率为500~4000 Hz的较宽频率范围内;车轮辐射噪声主要分布在中心频率为1250~4000 Hz的中、高频范围内。从二者对总噪声的贡献来看,钢轨是主要的辐射源,车轮次之。轮轨、钢轨、车轮的辐射总声压级分别为86、85、81 dBA。
With statistical energy analysis, the forecast model of wheel - rail noise of subway was established, wheel - rail noise of certain subway was predicted. It shows when the train rims with the speed of 60 kin/h, the major noise radiated from wheel - rail is in the range of 500 - 4 000 Hz; The ma- jor noise radiated from rail is in the range of 500 - 4 000 Hz; The major noise radiated from wheel is in the range of 1 250 - 4 000 Hz . As for the contri- bution to total noise, rail is dominate, wheel is minor.The sound pressure level （SPL） radiated from rail- wheel, rail, wheel, is 86 dBA, 85 dBA, 81 dBA, separately.
出处
《铁道机车车辆》
北大核心
2009年第5期60-63,共4页
Railway Locomotive & Car
关键词
地铁
轮轨噪声
统计能量分析
subway
wheel-rail noise
statistical energy analysis
