不同结构型式与参数单层窗隔声性能试验分析

通过试验研究玻璃形式与规格、窗框型材、开启方式与密封形式对单层隔声窗隔声性能的影响,结果表明:玻璃形式对平开窗的计权隔声量影响较小,但低频共振现象存在显著差异;单层窗在低频段隔声效果基本相近,对200Hz~2 000 Hz频段,真空玻璃、夹胶中空玻璃形式窗隔声性能相对最好;塑钢窗的隔声性能稍好于断桥铝型材窗,且二者皆显著优于普通铝合金窗;增大窗框型材厚度可有效提升整体隔声性能;平开窗隔声性能显著优于推拉窗,两者差异主要体现在中高频段吻合效应的严重程度;而采用包覆式密封条对提升推拉窗隔声量有一定效果。以上结论可为降噪工程设计提供参考依据。

Experimental Study on Sound Insulation Performance of SinglelayerWindows with Different Structural Types and Parametersn

The influence of different parameters on sound insulation performances of single-layer windows were studied experimentally, including casement forms and specifications, window frame profiles, open mode and sealing form. The results show that casement forms have small effect on the weighted sound isolation of casement windows, however, the characteristic of low-frequency resonance was different significantly. Sound insulation performances is similar in low frequency for different types of casement forms, while vacuum glass and laminating-hollow glass have better performance in 200~2kHz band. The sound insulation performances of plastic steel windows is slightly better than broken bridge aluminium windows, and are significantly better than ordinary aluminum alloy windows. Enlarging thickness of window frame profiles can improve its sound insulation performance. Owing to the slighter effect of coincidence effects in middle-high frequency, casement windows’ sound insulation performances is better than sliding windows. Furthermore, the use of coated seals instead of seal strips is an efficient way to enhance sound insulation for sliding windows. This paper can provide the necessary basis and support for the sound insulation of the building design and window renovation.