Sound Insulation Performance Analysis of New Energy - saving Lightweight Wooden Wall

Abstract

In this paper, a kind of light energy-saving prefabricated building high sound insulation wood wall is designed, and its sound insulation performance is experimentally studied in practical housing applications. Firstly, an energy-saving wood wall is designed on the basis of a sound insulation calculation with weighted sound transmission loss of 44.0 dB. Secondly, the energy-saving wood wall is implemented in practical house applications and the corresponding sound insulation of the wall is measured for evaluation. Measurement results show that the actual weighted sound transmission loss of the wall is 24.0 dB. Further analysis indicates that the gaps of the plates and rigid connections are the main causes of the sound insulation decrease in the actual application of this lightweight wall. This paper provides the design method of lightweight walls for new energy-saving light prefabricated houses, and indicates the importance of optimizing the construction details to guarantee the overall sound insulation performance of energy-saving light prefabricated houses.