高校宿舍声环境现状调查与模拟改造

Investigation and Simulation of Acoustic Environment in University Dormitories

对不同降噪策略进行模拟测试,测试结果表明:七种降噪方式均能有效减少噪声级。外部降噪策略中,降噪效果由大到小依次为:设置声屏障>设置绿化带。内部降噪策略中,降噪效果由大到小依次为:设置封闭式阳台>卫生间设置钢门>设置双层阳台玻璃门>设置双层玻璃高窗>卫生间居中。采用封闭式阳台较改造前最不利房间昼、夜间噪声级减少10 dB;卫生间设置钢门较改造前最不利房间昼、夜间噪声级减少8 dB;设置双层阳台玻璃门较改造前最不利房间昼、夜间噪声级减少6 dB;设置双层玻璃高窗较改造前最不利房间昼、夜间噪声级减少3 dB;卫生间居中较改造前虽然最不利房间噪声级没有改变,但其他房间声环境得到了改善。

Different noise reduction strategies were simulated and tested in this study.The test results showed that the seven noise reduction methods can effectively reduce the noise level.In the external noise reduction strategy,the noise reduction effect is as follows:setting sound barrier,setting green belt.In the internal noise reduction strategy,the noise reduction effect is as follows:setting enclosed balcony,setting steel door in toilet,setting double-layer balcony glass door,setting double-layer glass high window,center the toilet.The noise level of the most unfavorable room at night and day is reduced by 10 dB when the closed balcony is adopted.The noise level of the most unfavorable room in the day and night is reduced by 8 dB compared with that of the room with steel door in the toilet.The noise level of the most unfavorable room in the daytime and night is reduced by 6 dB when the glass door of the double-storey balcony is installed.The noise level of the most unfavorable room at night and day is reduced by 3 dB compared with that of the room with double-glazed high windows.Although the noise level of the most unfavorable room did not change,the sound environment of other rooms was improved.