山城道路交通噪声的分析和预测

本文报道了以路面坡度为主要特点的山城道路交通噪声的分析和等效声级预测方法.根据山城路面结构,两侧建筑物分布特点,对机动车辆在坡道上行驶状态和噪声辐射进行了大量测量和研究,得到不同车种噪声与坡度、车速的线性关系式.研究证明上下坡侧声级值有差异,道路两侧建筑物阶梯式分布噪声污染特点.给出了坡道路面交通噪声等效声级及其在车流量较少条件下的预测方法,并与实测值作了比较.

Analysis and Prediction of Traffic Noise in the Mountain City

This paper presents a method fpr analysis and prediction of traffic noise in the mountain city, emphasizing the characteristics of sloping roads. Talcing Qingdao City as an instance, based on road structure, distribution of terraced buildings along both sides of the sloping roads and the conditions of motor vehicles shuttling to and fro on the roads with rediative noise, three different models have beeen set up for long-term monitoring, and the linear relations among varities of vehicle noise, speeds and road slopes have been demonstrated. The results summed up correct range of noise levels caused by the road-side buildings and sloping road structure. The authors propose the method for predicting Leq of traffic noise on the sipping road surface in practice.