关键词: 声学, 单层窗, 隔声性能测试

Abstract:

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.