Prediction on the Enhancement of the Impact Sound Insulation to a Floating Floor with Resilient Interlayer

3rd Annual International Workshop on Materials Science and Engineering

Huang, Xianfeng^1,2,3 ; Meng, Yao^1,2,3 ; Huang, Riming^1,2,3

College of Civil Engineering and Architecture, Guangxi University, Nanning

530004, China^1

Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, Guangxi University, Nanning

530004, China^2

Key Laboratory of Disaster Prevention and Structural Safety, Ministry of Education, Guangxi University, Nanning

530004, China^3

关键词: Floor-impact sound;    Impact sound insulation;    Impact sound pressure levels;    Impact sound transmissions;    Insulation design;    Sound transmission;    Statistical energy analysis;    Theoretical methods;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/250/1/012060/pdf
DOI  :  10.1088/1757-899X/250/1/012060

来源: IOP

【 摘 要 】

This paper describes a theoretical method for predicting the improvement of the impact sound insulation to a floating floor with the resilient interlayer. Statistical energy analysis (SEA) model, which is skilful in calculating the floor impact sound, is set up for calculating the reduction in impact sound pressure level in downstairs room. The sound transmission paths which include direct path and flanking paths are analyzed to find the dominant one; the factors that affect impact sound reduction for a floating floor are explored. Then, the impact sound level in downstairs room is determined and comparisons between predicted and measured data are conducted. It is indicated that for the impact sound transmission across a floating floor, the flanking path impact sound level contribute tiny influence on overall sound level in downstairs room, and a floating floor with low stiffness interlayer exhibits favorable sound insulation on direct path. The SEA approach applies to the floating floors with resilient interlayers, which are experimentally verified, provides a guidance in sound insulation design.