“房中房”结构隔振性能实验研究

Experimental study of vibration isolation performance on "room in room" structure

该文以国家大剧院录音棚与河北工程学院建筑声学实验室为原型搭建了实验台，通过实验研究了“房中房”结构的隔振性能。实验显示，由于隔振器自身质量引起的内部共振与基础非刚性的影响，“房中房”结构的高频隔振性能被显著降低。比较金属弹簧隔振与纤维材料隔振发现，由于金属弹簧隔振器的内部共振更为严重，导致金属弹簧隔振器的高频隔振性能比纤维材料差。金属弹簧隔振器垫上橡胶垫后，可以明显改善高频的隔振性能。

The article is about the vibration isolation performance on ＂room in room＂. The experiment platform for this as the studio of National Grand Theater and the Building Acoustics Laboratory was established in Hebei Engineering College. The result shows that the vibration isolation performance of ＂ room in room＂ structure is significantly lower on the high- frequency wave, because of the effect of internal resonance and non- rigid base. Compared to metal spring isolator with isolation fiber materials, the internal resonance of metal spring isolator is more serious, so the vibration isolation performance of metal spring isolator is lower than the fiber material on high- frequency wave. By using rubber mats, the vibration isolation will be significantly improved.