重庆市主城区典型道路的交通噪声

选取重庆市主城区典型道路,实测了交通噪声昼夜、水平和垂直变化,结果表明：交通噪声昼夜等效A声级高速公路最高,主干道次之,次干道最低,交通噪声随车流量增加而增大,高峰值出现在上午8：00-10：00和17：00-20：00,最小值出现在凌晨4：00;水平方向上,随着距路沿距离的增加,噪声值逐渐减小,道路路沿45m以外可满足《声环境质量标准》（GB3096-2008）要求;垂直方向上,噪声值先增加后逐渐降低。

Typical Road Traffic Noise of Main Urban Area of Chongqing City

On typical roads in main urban area of Chongqing City, the traffic noise was measured and analyzed. The results showed that highway traffic noise of day and night equivalent sound level was the highest, the next was main roads, minor trunk road was the minimum. Traffic noise increased with the increase of vehicular traffic, the peak value appeared during 8 - 10 am and 17 - 20 pro, the minimum value appeared in 4 am. On the horizontal direction, the noise value was gradually reduced with the increase of the distance between the noise source and the road-edge, and the noise away from the road-edge over 45 m could meet the requirements of ＂ Environmental quality standard for noise＂（GB3096-2008）. On the vertical direction, the noise value increased and then decreased gradually.