Study on application of comprehensive noise reduction technology in noise sensitive point of Expressway

Abstract

Compared with the traditional single way of setting conventional sound barrier, the noise reduction effect is significantly improved by using the comprehensive noise reduction technology combining low noise pavement technology with new high efficiency sound barrier on the highway. Field test data show that, the OGFC-13 low noise pavement structure has good sound absorption performance, which can effectively reduce the interior noise of the test vehicle by about 3.0dB. After using the comprehensive noise reduction technology shown in this paper, the noise reduction effect of the test section of the project is 9.9dB at 30m away from the noise barrier panel, which is about 4.3dB higher than that of the ordinary section. The monitoring data show that with the increase of the distance, the noise reduction effect of the section treated by the comprehensive noise reduction technology is more efficient.