【摘要】 传统结构分析中主要研究产生结构破坏的低频振动,由于低频波波长相对于建筑结构的尺寸较大,振动的衰减主要与建筑结构采用的材料有关,而没有必要考虑波在结构内部,沿不同形式构件传播产生的差异。而生活噪音的频率集中在500 Hz~2000 Hz左右,其波长相对于建筑结构较小,所以此差异必须加以考虑。以三种常用的建筑结构形式为研究对象,采用通用有限元软件ABAQUS分析比较噪音波在结构内部,沿不同形式构件传播产生衰减规律。研究结果表明,框架结构隔音效果明显优于剪力墙结构,而框剪结构只略优于剪力墙。更多还原

【Abstract】 Traditional structural analysis focuses mainly on low frequency vibrations.As the wave length for low frequency waves is much bigger than the size of the structure,vibration decays mainly with time,which is caused by material damping,and the wave transmission within the structure is negligible.As the frequency of daily noise is mainly from 500Hz to 2000Hz,corresponding wave length is relatively short compared to the size of the structure.Therefore,it is necessary to consider the transmission decay of noise waves within the structure.This paper focuses on the study of transmission decay of noise waves within three widely-used forms of structures by using the commercial software ABAQUS.The results show that shear wall structure is the worst form for noise isolation,while frame structure is the best.更多还原