With the increase of operation time,the track roughness increases,the interior noise increases,and the passenger comfort decreases.Based on the line test data,the relationship between wheel-rail roughness and in-vehicle noise is explored.When the train runs in the tunnel at a speed of 60km/h,the roughness of the rail with a wavelength of 31.5-50mm exceeds the roughness of the C-class rail by 12dB,and thein-vehicle noise reaches 83dB.The rail roughness of wavelength 63-200mm has littleinfluence on the noise inside the car.The overall wheel roughness amplitude exceeds the A-class amplitude by about 11dB,and the interior noise reaches 83.3dBA;When the train runs at A speed of 80km/h and the overall wheel roughness amplitude exceeds the class A amplitude by about 6dB,the interior noise reaches 83.1dBA,and the total value of the interior noise ex-ceeds the phase standard limit.It is beneficial to reduce the influence of noise on passengers to formulate the wheel and rail grinding strategy with appropriate period.
维普
万方数据