地板轻量撞击声隔声特性的研究

Study on Characteristics of Light Impact Sound Insulation for the Floors

采用小型隔声箱体对几种地板的轻量撞击声隔声特性进行了研究。结果显示 :铺装木质地板的楼板与光混凝土楼板及铺装花岗岩楼板的轻量撞击声特性显著不同 ,前者的声压级曲线近似单峰型变化 ;而后者近似阶梯型变化。铺装各种地板后的楼板 ,轻量撞击声声压级均有降低 ,其中铺装木质地板具有明显更佳的轻量撞击声隔声性能 ,尤其是 5 0 0 Hz以上的中、高频轻量撞击声。木质地板相互之间的隔声效果差别不大。

Characteristics of light impact sound insulation for the floors were studied through adopting small size sound insolation instrument.The results showed that frequency spectra property of light impact sound insulation were significantly different between wood floors and concrete floorlab and granite floor.Wood floors have good insulation effect for light impact sound, specially for sound up to 500Hz;Granite only have small improvement for light impact sound. In addition,the performance of light impact sound insulation for the floor was better under solid flooring than under flooring with wood keel.