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笔者从事高速公路建设环境保护及环保科研工作,经常对高速公路上声屏障的设置位置及长度、高度感到科学依据不足。近期通过研究,完成了《高速公路交通噪声衰减规律及防治对策研究》科研课题,重点研究了高速公路交通噪声的特性、衰减规律,运用声学测量技术,分析高速行驶汽车的交通噪声时域特性、频谱特性及对噪声强度的影响。据此可比较好地解决声屏障的设置问题。现把研究成果中的高速公路交通噪声声源特性分析研究的内容与各位同行进行探讨,希望能对从事交通噪声控制工作的人员有所启迪与帮助。
I was engaged in highway construction environmental protection and environmental protection research work, often on the highway noise barriers set the location and length, height, lack of scientific evidence. Recently, the research project “research on the law of attenuation of traffic noise on expressways and its prevention and control measures” has been completed. The research focused on the characteristics and decay laws of expressway traffic noise, using the acoustic measurement technology to analyze the time-domain characteristics of traffic noise of high- Spectral Properties and Their Impact on Noise Intensity. Accordingly, the sound barrier setting problem can be solved well. At present, the content of research on the characteristics of highway traffic noise source analysis is discussed with colleagues, hoping to enlighten and help those engaged in traffic noise control.