궤도 근접 저상 방음벽 기술 개발(I)

With the increase of high-rise apartments near the railroad after the new railway construction, complaints have begun to arise. Though a barrier is generally used to reduce railway noise, it is not enough to help apartments higher than fifth floor. It is most effective to install soundproof facilities near the noise source. However, this method still did not apply in the railway field and a systematic study was not even conducted. In this study, we developed a technique where the barrier was installed close to the rail track height, less than 1m, to reduce the rolling noise from the wheels of the train and rails. For step 1, the development of a low height barrier was carried out overseas technology survey, near field sound analysis and performance analysis was carried out for the material and height of the barrier.