防振支持脚と周辺空気抜きが二重床の遮音効果に及ぼす影響についての理論的考察

概要

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As for a floor system composed of a slab and floor coverings, the reduction characteristics are determined by a coupled system, which consists of a floor panel, a slab, an air-cavity, and mechanical links. At low frequencies, an adverse effect can be seen due to the air-cavity between two plates. It is considered to be effective to make some space between a floor panel and side walls for attenuating the adverse effect. In this paper, a fully coupled vibroacoustic model is suggested, where effects of the ventilator are also taken into account with applying boundary conditions of a perforated board to the model. Factors of the attenuation characteristics of a floor coverings system and the ventilator effects are investigated theoretically. To verify this analytical model, the numerical results are discussed in comparison with existing experimental results.
社団法人日本建築学会の論文
2006-02-28