摘要：随着交通事业的迅速发展，交通噪声给交通路线附近的居民带来了一定的干扰。而设立道路声屏障是一种十分有效的降低交通噪声的措施，目前，国内外有越来越多的人投入到声屏障的研究工作当中。本文将运用德国Cadna/A环境噪声模拟软件系统和《道路声屏障声学设计规范》（报批稿）中的数学模型来预测计算高速公路声屏障的插入损失，并与实际监测值进行比较分析，揭示预测计算值相对实际测量值误差的原因，并指出在大车流、低本底的道路时，实测插入损失更接近预测计算值，软件和模型适用于实际工程中。

关键词：噪声 声屏障 插入损失 预测计算

 

 

 

Abstract: As the fast development of our country’s transportation, the traffic noise has brought some problems to the residents along the roads. The noise barrier is an effective mean of decreasing the noise. Currently, there are many people around the world researching on the noise barrier. This paper predicts the insertion loss of the freeway noise barriers by using German Cadna/A environmental noise simulating system and the mathematic model of the  《criterion for the vocal design of the road noise barrier》,and compare it with the actually measuring volume. By analyzing the differences, this paper explains why the errors exist. This paper also illustrates that in the condition of high traffic, low background noise, the actually measuring insertion loss is more near to the forecast calculation .The software and model is suitable for the practice.

 

Keyword: noise, noise barriers, insertion loss, forecast calculation