隧道内地铁车辆噪声特性试验研究

Experimental study on noise characteristics of metro vehicles in tunnels

为研究地铁车辆在地下隧道内运行时的车内噪声特性以及噪声源分布,选取某线路地铁进行车辆振动噪声测试分析,测试对比了60 km/h、70 km/h和80 km/h速度运行时,1车车内司机室、客室前、客室中、客室后和车间连接处噪声测点的总值和频谱特性。同时对隧道环境车辆以70 km/h运行时,车内各个噪声测点位置进行了车内噪声源识别。

To study the interior noise characteristics and noise source distribution of metro vehicles operating in underground tunnels,a certain metro line was selected to test and analyze the vehicle vibration and noise.The total value and spectral characteristics of the noise measurement points in the driver's cab,in front of the passenger compartment,in the passenger compartment,behind the passenger compartment and at the connection point between vehicles were tested and compared at speeds of 60 km/h,70 km/h and 80 km/h.At the same time,the noise sources inside the vehicle were identified at various noise measurement points when the vehicle was running at 70 km/h in the tunnel environment.