交通拥堵环境下的隔声、降噪措施改进与研究

Improvement and Research on Sound Insulation and Noise Reduction Measures in Traffic Congestion Environment

噪声污染有局部性特点,现阶段城市内噪声污染的根源主要集中于汽车噪音,在交通拥堵的环境下,对声音进行隔断降噪十分必要。不同环境下的噪声评价方法各有不同,但归根结底,任何噪声污染事件由噪声源、传声途径和接收者三个主要部分组成。在交通拥堵环境下对噪声源和传声途径两个角度对声音进行降噪是当前隔声降噪的主措施。因此,提出对车辆的组装结构和行车路线进行改进、在汽车制造过程中采用具有良好隔声、吸声效果的材料进行降噪。并结合实例进行调查分析,针对日趋严重的城市交通拥堵导致的噪声污染问题,对噪声进行了预测分析,并针对实际情况提出一种新的隔声屏障降噪模式并进行仿真实验分析。

Noise pollution has local characteristics. At present, the root of urban noise pollution is mainly concentrated in au- tomobile noise, in the environment of traffic congestion, it is necessary to block noise reduction. The evaluation methods of noise in different environments are different, but in the final analysis, any noise pollution event is composed of three main parts：noise source, transmission channel and receiver. In the traffic jam environment, the noise source and the sound transmission way are the main measures of sound insulation and noise reduction. Therefore, the assembly structure and the driving route of the vehicle are improved, and the materials with good sound insulation and sound absorption effect are used for noise reduction in the process of automobile manufacturing. Combining with the example, the paper analyzes the noise pollution caused by the increasingly seri- ous urban traffic congestion, and proposes a new noise reduction mode and simulation analysis for the actual situation. The experi- mental results show that the level of the level of the layer directly affects the noise reduction effect.