高速铁路钢轨波磨对沿线声环境的影响  

The Influence of Rail Corrugations of High-speed Railway to the Acoustic Environment

作　　者：尹皓[1] 伍向阳[1] 步青松[1] 刘兰华[1] 邢星[1] 

机构地区：[1]中国铁道科学研究院节能环保劳卫研究所,北京100081

出　　处：《铁路节能环保与安全卫生》2014年第5期205-208,共4页Railway Energy Saving & Environmental Protection & Occupational Safety and Health

摘　　要：针对铁路钢轨异常波磨问题,在某高铁线路两侧对未发生异常波磨和发生波磨路段进行了噪声测试。发生波磨与未发生波磨区段的测试对比结果表明：（1）对于300 km/h动车组,动车组通过时段的等效声级远轨侧前者比后者增加2-4 dB（A）,近轨侧前者比后者增加5-7 dB（A）;315 Hz及以下的低频噪声基本不发生变化,在630 Hz、1 250 Hz处出现增量峰值,峰值增量接近10 dB（A）。（2）对于250 km/h动车组,动车组通过时段的等效声级变化不明显[1.0 dB（A）以内];315 Hz及以下的低频噪声基本不发生变化,在500 Hz、1 000 Hz处出现增量峰值,峰值增量2-3 dB（A）。（3）根据理论计算,对于250 km/h动车组,一阶振动频率约在490 Hz左右;对于350 km/h动车组,一阶振动频率约在600 Hz左右,与现场噪声峰值出现频率的实测结果非常接近。In order to study the influence of rail corrugations of high-speed railway to the acoustic environment, authors carried on in-situ measurements of noises on one high-speed line, the rail corrugations have happened on one section of the line （the former） and the rail corrugations have not happened on another section of the line （the latter）. The results indicated that ： （ 1 ） To the 300 km/h CRH train, the equivalent sound level of the former increase 2 - 4 dB （A） than the equivalent sound level of the latter on the far side, on the near side the former increase 5 - 7 dB （A） than the latter. The equivalent sound level of the frequency below 315 Hz doesn＇t change, at about 630 Hz and 630 Hz appears the peak, it＇s nearly 10 dB （A）. （2） To the 250 km/h CRH train, the equivalent sound level does not change obviously [ within 1.0 dB （A）1- The equivalent sound level of the frequency below 315 Hz doesn＇t change, at about 500 Hz and 1 000 Hz appears the peak, it＇s nearly 2 -3 dB （A）. （3） According to the theoretical calculation, to the 250 km/h CRH train, the first-order vibration frequency is nearly 490 Hz; to the 350 km/h CRH train, the first-order vibration frequency is nearly 600 Hz, the peak frequency of the noise is very close to the measured results

关 键 词：高速铁路 铁路噪声 钢轨波磨 噪声测试 

分 类 号：TB53[理学—物理]