Noise Test and Analysis of City Road Traffic

摘要

The tests of urban road special position such as: flat-straight-line road, viaduct, tunnel side are completed through noise test and analysis system in noise laboratory. From the analysis, it is concluded that city road traffic noise frequency range of the flat-straight-line road, viaduct and the side of the tunnel are mainly in 315 Hz～3150 Hz, and its peak respectively is: 64 dB (A), 73.5 dB (A) and 72 dB (A). The road traffic noise at the side of viaduct and tunnel are higher than that of the flat-straight-line road. The reason is the noise radiation of road viaduct and the road traffic air wave of acoustic pressure near tunnel. Building noise barrier and multi-porous asphalt pavement can be adopted to re reduce the noise. This study has high reference value on the design of the noise barrier.