广州市昼夜道路交通噪声的监测与分析

对广州市的昼夜交通噪声污染现状进行了分区域分道路等级的实地监测,得到共53个监测点位白天和夜晚的等效声级及其统计声级,同时对每个监测点展开了交通流调查,并分析交通流特征对交通噪声的影响。监测结果表明, 白天快速路、主干路、次干路及支路的平均等效声级分别为74.2、72.2、67.8、65.1 dB,快速路及主干路沿线的交通噪声污染比次干路及支路的严重。夜晚所有测点的噪声值均超过55 dB,快速路、主干路、次干路及支路的平均等效声级分别为72.2、72.3、66.3、64.5 dB,广州市夜晚的交通噪声污染较为严重。

Monitoring and Analysis of Road Traffic Noise in Guangzhou City at Day and Night

The traffic noise pollution in Guangzhou's different districts was monitored at day and night by classifying the roads to four types. The equivalent sound level and statistical sound levels of totally 53 monitoring points were obtained. While for each monitoring point, the traffic flow investigation was carried out and the traffic flow's impacts on the traffic noise were analyzed. The monitoring results showed that during the day, the average equivalent sound level of the express ways and major arterials was 74.2 dB and 72.2 dB, for the minor arterials and branch ways, the value was 67.8 dB and 65.1 dB respectively. The traffic noise pollution along the express ways and major arterials was more serious than the minor arterials and branch ways. At night, traffic noise of all the monitoring points was larger than 55 dB, the average equivalent sound level of the express ways,major arterials,minor arterials and branch ways was 72.2, 72.3, 66.3, 64.5 dB respectively, the traffic noise pollution in Guangzhou was serious at night.