三明治板隔声量理论计算方法探讨

Discussion on Theoretical Arithmetic Methods of Sound Insulation of Sandwich Board

建筑噪声已经成为当前备受关注又迫切需要解决的问题之一。本文针对当前的理论计算模型,分析了模型的计算难点与缺陷,并从目前的既有建筑声环境改造方法出发,选取最有代表性的三明治板的隔声性能进行分析,用波动理论方法推导了三明治板的隔声量公式。最后与试验结果相比较,分析了经验公式法,声传递法,模态分析法和有限元法在隔声量计算方面的适用性。本文主要从理论方法的角度对有限空间内的三明治墙板的隔声量进行了模拟,为以后三明治墙板的结构优化设计提供了一定的理论依据。

Construction noise has become one of the problems that attract much attention and are in urgent need to address. This paper analyzed the model calculation difficulties and defects regarding current theoretical arithmetic model, selected from the current modification methods of acoustic environment of the existing buildings the insulation performance of the most representative sandwich boards for analysis, and used wave theory to derive the equation of sound insulation of sandwich board. Finally,this paper compared with the experimental results, analyzed applicability of empirical formula method, acoustic transfer method, modal analysis method and finite element method in calculation of sound insulation. This paper simulated sound insulation of sandwich board in finite space from the perspective of theoretical approaches, providing certain theoretical basis for future optimal design of structure of sandwich board.