Abstract:

Traffic noise level and noise spectrum characteristics are obtained by conducting monitoring and analyzing the traffic noise by seven typical traffic lines in Tianjin in this paper. Seven kinds of typical building external windows are selected and field test of their sound insulation performance are carried on. the comparative analysis of the real sound insulation effect of different window types is made according to the relevant specifications. The sound insulation performance of the existing window type of Tianjin is analyzed, and the suggestion of improving the sound insulation performance of the window is given. The results can be used to evaluate the traffic noise environment along the road and railway and improve the accuracy of the environmental impact assessment which used to be based on the sound transmission loss provided by window manufacturer.

摘要：

为验证现存典型建筑外窗窗型的隔声性能，对天津市7条典型交通线路沿线的交通噪声进行现场监测和分析，得到交通噪声声压级及噪声频谱特性，在此基础上选取天津市现有的7种典型的建筑外窗窗型，对其隔声性能进行现场测试。对比分析所测试不同外窗窗型的实际隔声效果。研究结果显示,在天津7条典型道路或铁路噪声影响下，只有推拉塑钢单层玻璃双层窗、平开断桥铝中空玻璃窗2两种窗型能够完全满足居住建筑室内声环境的要求。研究结果可应用于道路和铁路交通沿线新建或既有建筑的交通噪声环境评价，改变以往评价中仅依据外窗厂家提供的隔声量数值的评价方式，提高评价的准确性。

关键词: 声学, 建筑外窗, 交通噪声, 外窗隔声, 现场测试, 环境影响评价