太原市高架复合道路交通噪声影响因素分析

Analysis on the Influence Factors of Traffic Noise of Elevated Combination Road in Taiyuan

基于太原市高架交通的实测数据,将高架复合道路分为5个路段进行理论计算,并与实测值对比分析发现高架桥两侧噪声主要来源于高架水平段和临近侧辅道,车流量、车型和车速是太原市高架复合道路交通噪声的主导因素。同时对高架复合交通各路段车流量和实测声压级值进行了相关性分析,得出高架桥上的中型车、辅道上的中型车及重型车是太原市高架复合道路交通噪声的主要来源;其中高架桥上的中型车与实测声压级相关系数最高,为0.77,测点一侧的辅道上的中型车与重型车车辆数与实测声压级的相关系数分别为0.67和0.49。研究结果为太原市高架复合道路交通噪声污染防治指示了一定方向,并探讨了相关措施。

Based on the measured data of elevated combination roads in Taiyuan,the elevated combination road is divided into 5 sections to calculate its traffic noise and to compare them with the measured values. It is found that the noise on both sides of the road is mainly from the elevated horizontal section and the adjacent auxiliary road on the ground,and traffic volume,vehicle type and speed are the main factors of traffic noise in Taiyuan elevated combination roads. At the same time,correlation analysis is carried on between traffic volume on all sections of the roads and the measured SPL values. It is found that the medium sized vehicles on the viaduct and medium sized vehicles and heavy vehicles on auxiliary roads are the main sources of traffic noise in Taiyuan. The correlation coefficient between medium sized vehicles on the viaduct and traffic noise is the highest 0. 77,and the correlation coefficients of the number of medium sized vehicles and heavy vehicles on the adjacent auxiliary roads with the traffic noise are 0. 67 and 0. 49. The results of this study indicate the direction of traffic noise pollution prevention and control in Taiyuan elevated compound road and discuss the relevant measures.