已建成居住区交通噪音的削减方法主要有:隔声屏障、坡堤防噪和绿化防噪等。这些方法的降噪效果取决于噪音源的特性和这些措施设计的合理性,其降噪效果从2-20分贝不等。使用这些方法一定要具体问题具体分析,不可盲目乱用,否则会达不到所需的降噪效果。结合一项工程实例,利用计算机模拟软件分析了不同减噪方案的减噪效果,进而提出了削减居住区中大型机动车交通噪音的有效方法。 Completed residential area traffic noise reduction methods are: noise barriers, slope embankment noise and green noise. The noise reduction effects of these methods depend on the nature of the noise source and the rationality of the design of these measures, with noise reduction ranging from 2 to 20 dB. The use of these methods must be specific analysis of specific issues, not blindly chaos, otherwise it will not achieve the desired noise reduction. Combined with a project example, the computer simulation software was used to analyze the noise reduction effect of different noise reduction schemes, and then an effective method to reduce the traffic noise of large motor vehicles in residential areas was proposed.