摘要
目的:测定北京市某临街住宅在安装隔声窗后室内噪声水平的变化情况,评价隔声窗对交通噪声的防控效果。方法:使用声级计对该住宅两侧居室(北四环侧和校园侧)在关闭隔声窗状态下的室内噪声水平(LAeq)进行测定,与同时测定的室外噪声水平进行对比,并且比较关闭和开启隔声窗时室内噪声水平的差异。结果:该住宅朝向北四环室外的平均交通噪声水平大于70 d B(A),超过我国《声环境质量标准》(GB 3096-2008)中的相关规定。关闭隔声窗后,居室内噪声水平显著降低(P<0.05),平均值在35 d B(A)以下,符合我国对室内噪声水平的规定标准。隔声窗的关闭和开启状态对室内噪声水平有显著影响(P<0.05),与开启隔声窗时比较,关闭隔声窗时四环侧和校园侧室内噪声分别降低18.8 d B(A)和8.3 d B(A),说明安装隔声窗对临街住宅尤其是朝向交通干道侧居室内的噪声水平有显著的降低效果。结论:隔声窗对临街住宅室内噪声有较好的防控效果。
Objective：To evaluate the preventive effects of sound insulation windows on traffic noise. Methods：Indoor noise levels of the residential rooms （ on both the North 4 th ring road side and the cam-pus side） with closed sound insulation windows were measured using the sound level meter, and compari-sons with the simultaneously measured outdoor noise levels were made. In addition, differences of indoor noise levels between rooms with closed sound insulation windows and open sound insulation windows were also compared. Results：The average outdoor noise levels of the North 4th ring road was higher than 70 dB（ A） , which exceeded the limitation stated in the “Environmental Quality Standard for Noise” （ GB 3096-2008） in our country. However, with the sound insulation windows closed, the indoor noise levels reduced significantly to the level under 35 dB（A） （P〈0. 05）, which complied with the indoor noise level standards in our country. The closed or open states of the sound insulation windows had significant influence on the indoor noise levels （ P〈0 . 05 ） . Compared with the open state of the sound insulation window, when the sound insulation windows were closed, the indoor noise levels reduced 18. 8 dB（A） and 8. 3 dB（A） in residential rooms facing North 4th ring road side and campus side, respectively. The results indicated that installation of insulation windows had significant noise reduction effects on street residential buildings especially on the rooms facing major traffic roads. Conclusion：Installation of the sound insulation windows has significant preventive effects on indoor noise in the street residential building.
出处
《北京大学学报（医学版）》
CAS
CSCD
北大核心
2015年第3期450-454,共5页
Journal of Peking University:Health Sciences
基金
北京市优秀博士学位论文专项资金(20131000109)
北京大学公共卫生学院青年人才支持计划资助~~
关键词
噪声
交通
隔声窗
临街住宅
Noise,transportation
Insulation windows
Street residential building
