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现在市内的建筑施工现场噪音扰民事件屡屡发生。建筑施工现场降噪是很多科研人员想进行研究解决的一个难题。如何降低施工现场噪声对周围居民的影响,减少扰民现象,一直是困扰建筑施工企业的一大难题。 由于建筑施工现场声源的复杂性和声波的绕射问题,要达到降噪目的,单一用吸音或隔声的方法很难达到最佳效果。为此,我们根据建筑施工现场具体情况,在查阅国内外大量资料的基础上,选择了几种廉价的高效率吸声、隔声材料和根据现场主要噪声源发出不同频率而设计出的随时悬挂式“吸声体”,研究出了一种能大量降低建筑施工噪声的周边全封闭式的、可移动的、多层的隔声吸音罩。
Noise incidents at the construction sites in the city are now frequent. Noise reduction at the construction site is a problem many researchers want to study and solve. How to reduce the impact of noise on the construction site to surrounding residents and reduce the phenomenon of disturbing people has always been a major problem for building construction companies. Due to the complexity of acoustic sources and the diffraction of sound waves in the construction site, it is difficult to achieve the best results by single sound absorption or sound insulation methods to achieve noise reduction. To this end, based on the specific conditions of the construction site, and on the basis of consulting a large amount of data at home and abroad, we have selected several inexpensive high-efficiency sound-absorbing and sound-insulating materials and designed to fly at different frequencies according to the main noise sources on the spot. The “sound absorber” has developed a totally enclosed, movable, multi-layered sound-absorbing sound-absorbing sound-absorbing cover that can greatly reduce construction noise.