论文部分内容阅读
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。
Building noise has become one of the most urgent and urgent problems to be solved. In this paper, according to the current theoretical calculation model, the difficulties and defects in the calculation of the model are analyzed. Based on the existing reconstruction methods of existing building acoustic environment, the most representative sandwich panels are selected for their sound insulation performance and wave theory The sandwich plate sound insulation amount formula. Finally, compared with the experimental results, the applicability of empirical formula method, acoustic transmission method, modal analysis method and finite element method in the calculation of sound insulation amount is analyzed. This paper mainly simulates the sound insulation of the sandwich panels in a limited space from the theoretical point of view, which provides a theoretical basis for the structural optimization of the sandwich panels in the future.