天津市道路声屏障理论与监测插入损失差异调查研究  

Differences Between Theoretical and Actual Insertion Losses of Noise Barriers for Roads in Tianjin

作　　者：王胜强[1] 魏如喜 马风杰 Wang Shengqiang;Wei Ruxi;Ma Fengjie(College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China;Tianjin Transportation Research Institute, Tianjin 300074, China)

机构地区：[1]南开大学环境科学与工程学院,天津300350 [2]天津市交通科学研究院,天津300074

出　　处：《环境科学与管理》2021年第11期7-10,共4页Environmental Science and Management

基　　金：天津市交通运输委员会科技计划项目(天津市道路声屏障技术要求研究2017-08)。

摘　　要：声屏障是降低道路交通噪声影响的一种有效设施,交通噪声特征对声屏障实际插入损失有重要影响。为更好的改进声屏障设计,提高其降噪效果,对不同类型道路的噪声等效连续A声级和声屏障插入损失进行了监测和计算,分析了道路的车辆类型和车速因素对等效连续A声级的影响,比较了声屏障插入损失理论值和实际值之间的差异。在设计时对噪声的等效连续A声级进行更加准确的预测,在道路建成使用后加强声屏障的维护和保养,可以改善声屏障的降噪效果。Noise barrier is one effective facility to reduce the effect of road traffic noise on human.The traffic noise characteristic has great impact on actual insertion losses of noise barriers.In order to improve the design work and increase the noise reduction of barriers,equivalent continuous A-weighted sound pressure level and insertion losses of noise barriers for different kinds of roads were monitored and calculated.The influences of vehicle type and speed on equivalent continuous A-weighted sound pressure level were analyzed.Moreover,the differences between theoretical and actual insertion losses of noise barriers for different kinds of roads were compared.Better noise reduction can be achieved if equivalent continuous A-weighted sound pressure level was accurately predicted during the project design.Good performance of noise barriers can be maintained after the roads have been completed and being in operation.

关 键 词：声学 交通噪声 声屏障 插入损失 声压级 

分 类 号：X839.1[环境科学与工程—环境工程]