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目的了解交通噪声对临街住宅区的影响。方法对公路交通噪声的时间、水平距离和垂直距离分布,临近住宅小区室内外噪声污染水平及影响交通噪声的相关因素(车流量,开关窗)进行测定和分析。结果公路交通噪声24 h时间分布中8、9、10时噪声较高,分别为79.8、79.9、82.1 dB;4、5时噪声较低,分别为65.5、65.0 dB,所测等效声级均超标,与车流量24 h时间分布基本一致。公路交通噪声随着水平距离的增加而衰减。交通噪声垂直距离分布呈现2、3层较1、4、5层高,公路旁住宅区内、住宅楼室内外昼夜所测等效声级值均超标。关窗能明显阻隔噪声,平均降低12.5 dB。结论临近住宅区的交通噪声及住宅区室内外噪声均严重超标,应积极治理。
Objective To understand the impact of traffic noise on residential street. Methods The time, horizontal distance and vertical distance distribution of road traffic noise are analyzed and the indoor and outdoor noise pollution level of residential area is approached and related factors affecting the traffic noise (traffic volume and switch window) are measured and analyzed. Results The noise of road traffic noise at 8, 9 and 10 hours was higher at 8, 9 and 10 hours, respectively, at 24 h and 79.8, 79.9 and 82.1 dB, respectively. At 4 and 5 hours, the noise was lower at 65.5 and 65.0 dB respectively. Exceeds the standard, and the traffic flow 24 hours basically the same time distribution. Road traffic noise decays with increasing horizontal distance. The vertical distribution of traffic noise presents 2,3 layers more than 1, 4 and 5 floors. The equivalent sound level measured in residential and residential buildings around the road day and night exceed the standard. Close the window can significantly block the noise, reducing the average 12.5 dB. Conclusion The traffic noise in residential areas and the indoor and outdoor noise in residential areas are seriously over standard, and should be actively managed.