文章摘要
刘平,刘胜楠,蔡锐,廖国峰,伍发元,蔡俊.错缝结构对隔墙传声损失的影响研究[J].声学技术,2018,37(3):268~271
错缝结构对隔墙传声损失的影响研究
The effect of staggered slit structure on the sound transmission loss of partition wall
投稿时间:2017-06-20  修订日期:2017-08-01
DOI:10.16300/j.cnki.1000-3630.2018.03.013
中文关键词: 缝隙  隔墙  错缝距离  阻抗管  传声损失
英文关键词: slit  partition wall  staggered slit distance  impedance tube  sound transmission loss
基金项目:国网江西省电力公司科研项目(5218201350F3)
作者单位E-mail
刘平 国网江西省电力公司电力科学研究院, 江西南昌 330029  
刘胜楠 上海交通大学环境科学与工程学院, 上海 200240  
蔡锐 国网江西省电力公司电力科学研究院, 江西南昌 330029  
廖国峰 上海交通大学环境科学与工程学院, 上海 200240  
伍发元 国网江西省电力公司电力科学研究院, 江西南昌 330029  
蔡俊 上海交通大学环境科学与工程学院, 上海 200240 juncai@sjtu.edu.cn 
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中文摘要:
      缝隙的存在一直制约着传统隔墙结构隔声性能的提高。以错缝双层石膏板结构为研究对象,分别研究了错缝深度和错缝距离对隔墙传声损失的影响。结果表明,错缝结构比直缝结构具有更好的隔声性能;缝隙深度的影响主要取决于隔墙面密度和声波传播路径的变化;而当错缝距离与隔墙厚度接近时,其隔声量最高,这是由于声能在墙体和错缝缝隙中的透射程度相当,从而弥补了缝隙在隔墙结构中的透声"短板"。
英文摘要:
      The existence of slits has restricted the improvement of sound insulation performance of the conventional partition wall structure. The sound transmission loss of partition wall under the existence of slits is studied. The effects of the staggered slit depth and the staggered slit distance on the sound transmission loss of partition wall are analyzed. The experimental results show that the sound insulation performance of the plasterboard whole component with the staggered slits is better than that with the straight slits. The effect of the staggered slit depth depends on the variations of the surface density of partition wall structure and the sound wave propagation path. When the staggered slit distance is close to the partition wall thickness, the sound insulation performance of the partition wall reaches the best. The reason might be explained is that the transmission degree of sound energy through the wall is quite equal to that through the staggered slits, which makes up for the "short board" of sound transmission in the partition wall structure with slits.
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