玻璃棉对轻型木结构外墙隔声性能的试验研究  

Experimental Study on Sound Insulation Performance of Glass Cotton in the Timber-Framed Exterior Wall

作　　者：李敏敏 谢文博 王正 曹瑜 LI Min-min;XIE Wen-bo;WANG Zheng;CAO Yu(College of Material Science and Engineering, Nanjing Forestry University, Nanjing 210037, China)

机构地区：[1]南京林业大学材料科学与工程学院

出　　处：《林产工业》2017年第11期13-17,共5页China Forest Products Industry

基　　金：江苏农林职业技术学院院级科技项目(2016kj008)

摘　　要：为满足人们对木结构房屋整体舒适度的客观需要,采用现场动态测量法,实测同种轻型木结构建筑中分别应用玻璃保温棉A和玻璃保温棉B作填充材料时的外墙的隔声量,同时结合其频谱进行频率成分及其声音源分析,针对不同填充材料对其墙体结构隔声性能影响开展比较研究。结果表明,玻璃保温棉B用于该轻型木结构房外墙结构填充材料能更有效地提高墙体隔声性能,室内A计权声级符合国家标准规定的居住建筑室内允许噪声级三级A计权水平;声频在50~10 000 Hz范围内采用玻璃保温棉A材料作本次测试结构填充材料的性价比较高。上述以期为我国轻型木结构房屋的声学优化设计及其工程应用提供有益借鉴,具有较高的工程应用价值。In order to meet people＇s objective needs for the overall comfort of wooden structure buildings, and this study aimed to investigate the sound insulation of the timber framed structure external wall which filling with different glass insulation cotton respectively by using on-site dynamic measurement. Combined with its frequency spectrum components and sound source analysis, and the compare of different filling materials for the sound insulation performance of the external wall will be further investigated. Results indicated that the Glass Cotton B as filling materials in the timber framed structure external wall can improve the sound insulation performance more effectively. The indoor A-weighted sound level is in line with the national standard of indoor residential buildings which allows the noise level to be three A-weight level. When the sound frequency in the range of 50-10 000 Hz, using Glass Cotton B as the filling material of exterior wall in this study is more cost- effective. The above is in order to provide a useful reference for the acoustic optimization design and engineering application of timber framed structure, and it has greater engineering application value.

关 键 词：轻型木结构房 墙体结构 隔声量 玻璃棉 工程应用 

分 类 号：TU366.2[建筑科学—结构工程]