抄録
Recently impact noise generated at an insulated joint has been an issue to be reduced, because the conventional countermeasure such as the rail welding cannot be applied to those points. Therefore the noise reduction effects of three countermeasure materials which are Noise Insulator for Rail Joint, Noise Insulator for Rail and Absorptive Materials on Tracks were investigated at the glued-insulated joint of the commercial line. These materials are all for reducing the noise around the rail joint by utilizing the noise absorbing and insulating properties. As the result of the test, impact noise generated when the train passed through the glued-insulated joint was reduced by about 4dB around rail joint by combined use of three countermeasure materials.
