Research On Sound Insulation Optimization Strategy Of Lightweight Wall Structure

At present,with the continuous progress of urbanization,traffic noise,construction noise,living noise and other noise sources are also increasing.At the same time,the development of high-rise and intensive urban buildings further requires the lightweight of building components.In order to ensure the sound insulation effect of the wall and create a comfortable sound environment,it is necessary to change the building enclosure structure from heavy components to light double-layer components.In practical engineering,the double-layer walls are generally connected by light steel stud or wooden stud to improve the strength of the wall.taking the double-layer walls of Z-type light steel stud and wooden stud as an example,the corresponding sound insulation prediction theory is not perfect.And few scholars have studied the inversion problem of wall sound insulation.Therefore,this paper will study the double-layer wall of Z-type light steel stud and wooden stud,and put forward the inverse model of sound insulation on the basis of establishing the prediction model of sound insulation of double-layer wall.that is,according to the demand of building sound insulation,the acoustic parameters of this kind of lightweight wall structure are obtained,and then the optimization measures of wall sound insulation are obtained.First of all,this paper introduces the sound insulation principle of the wall,and expounds three classical sound insulation theoretical methods:acoustic impedance method,modal analysis method and statistical energy analysis method.Secondly,the acoustic impedance method is mainly used to establish the sound insulation prediction model of Z-type light steel stud double-layer wall,and the statistical energy analysis method is used to establish the sound insulation prediction model of wooden stud double-layer wall,which is verified by the sound insulation prediction of Insul software.After the comparison of the data,it is proved that the two models have good accuracy.Then,through the analysis of the sound insulation frequency characteristic curves of Z-type light steel stud and wooden stud double-layer walls with different sound insulation structures,the influence of acoustic parameters on the wall sound insulation is obtained.Finally,combined with the intelligent algorithm,the inverse model of sound insulation of these two kinds of lightweight walls is established,that is,according to the actual requirements of sound insulation,the inversion of wall sound insulation is carried out,and the acoustic parameters of this kind of wall structure are optimized.as a result,the corresponding material and construction parameters of the enclosure structure are determined,and the specific sound insulation design strategy of lightweight wall is obtained.