北京市城区主要交通干线的噪声测量与分析

通过对北京市城区二环路、三环路和长安街等交通主干道的昼间交通噪声监测分析 ,发现各干道交通负荷重 ,且噪声普遍超标。城市各部分发展的不平衡导致车流量、车型、路况的差异 ,也使得交通噪声在空间上差异明显。当车流量较大时 ,道路两侧交通噪声在时间上基本呈正态分布。

Surveying and Analysis of Traffic Noise from Main Urban Roads of Beijing

Traffic noise surveying and analysis was performed in Beijing urban area along three main roads Er Huan road, San Huan road and Chang An street. The results showed that these main roads were overloaded by traffic flow during day time. Noise level due to road traffic along these roads is above relative environmental standard by 5 dBA. Spatial variance of traffic noise was observed, which was caused by unbalanced development of urban districts of Beijing. Traffic noise followed Gaussian distribution in time when traffic flow was large enough, which was valuable in noise prediction and assessment.