Study on the influence of stagger joint structure on acoustic transmission loss of partition wall

Abstract

The existence of gap has always restricted the improvement of sound insulation performance of traditional partition wall structure. The sound transmission loss of partition wall under the slit existence condition was studied. The effects of the staggered slit depth and the staggered slit distance on the sound transmission loss of partition wall were analyzed. The experimental results showed that the sound insulation property of the plasterboard whole component with the staggered slit was better than one with the straight slit. The effect of the staggered slit depth depended on the variation of surface density of partition wall structure and sound wave propagation path. The When the staggered slit distance was equal to the partition wall thickness, the sound insulation property of the partition wall is best. The reason can be explained is that the transmission level of sound energy through the wall is equivalent to that through staggered slit. It makes up the “short board” of slit transmission in partition wall structure.