北京市四环路临街某高层住宅环境噪声评价

Evaluation of Noise in a Residential High Building along the 4th Ring Road of Beijing

[目的]评价北京市交通干道临街高层住宅环境受交通噪声污染状况。[方法]用个人声暴露计全天连续监测某12层高层住宅各层噪声(LAeq)水平,描述北四环侧室内、室外和校园侧室内、室外4个位置噪声水平及噪声的时间、空间分布。[结果]此高层住宅12个楼层北四环侧室外全天噪声平均为73.9dB,昼间噪声平均为74.4dB,夜间噪声平均为72.6dB,北四环侧室内,校园侧室内、外3个位置噪声水平较一致,全天噪声水平为58～60dB,昼间噪声为59～61dB,夜间噪声为53～56dB。凌晨2:00时～5:00时北四环侧室内噪声为45.8dB,高出校园侧室内约5dB。[结论]按照GB3096-93《城市区域环境噪声标准》规定,该建筑物内不同楼层不同位置昼夜噪声全超标,北四环侧居室受交通噪声影响较大。

[ Objective ] To evaluate noise pollution in residential high building environment along a main road in Beijing City. [Methods ] Equivalent noise levels（ LAeq ）at 4 different positions of the building（ namely along the road side and opposite side, indoor and outdoor respectively ）were measured on every floor of the 12-storey residential building to describe noise levels and time, spatial distribution of the environment noise in the building. [ Results ] The investigation showed that the average outdoor noise level on the road side is 73.88 dB during a whole day, 74.37 dB during the day-time and 72.61 dB during the nighttime.There was no remarkable difference of the noise levels among the indoor spot of the road side, indoor and outdoor spots of the opposite side which were 58-60 dB during a whole day, 59-61 dB during the day-time and 53-56 dB during the night-time. Indoor noise level along the road side was 45.8 dB, which was 5 dB higher than the opposite side during sleeping time （ 2 am - 5 am ） . [ Conclusion ] The noise levels exceeded acceptable limits at all spots according to the Standard of Environmental Noise of Urban Area （ China GB3096-93 ）, and the road side of the high building was more significantly influenced by traffic noise.