建筑外窗空气声隔声性能相关研究

Research on Air Sound Insulation Performance of Exterior Windows in Buildings

外窗作为建筑物的重要维护结构,其隔声性能对建筑室内声学环境的影响至关重要。声波传入围护结构主要通过空气、透射、撞击三种途径,在建筑运行阶段中,空气和透射是建筑外窗传声的主要途径,本文通过研究影响建筑外窗空气声隔声性能的基本规律,根据质量定律增加外窗面密度,通过调整玻璃及中空层厚度,避开各构件的吻合临界频率重合现象,利用阻尼控制对共振损失较好的提升效果,对提高建筑外窗空气声隔声性能提出改善措施。

The exterior windows are important parts of envelop structure of buildings,their sound insulation performance is crucial for the impact on the indoor acoustic environment.Sound waves are mainly transmitted into the envelop structure through three channels:air,transmission,and impact.During the operation phase of a building,air and transmission are the main channels for transmitting sound through the building’s exterior windows.This article studies the basic laws that affect the air sound insulation performance of the building’s exterior windows,increases the density of the exterior window surface according to the law of mass,and avoids the phenomenon of overlapping critical frequencies of each component by adjusting the thickness of the glass and hollow layer.The use of damping control has a good improvement effect on resonance loss,and improvement measures are proposed to improve the air sound insulation performance of building exterior windows.