In this paper an equivalent sound barrier model is proposed and its A-weighted sound insertion loss under different traffic volumes is computed.

Study on sound barrier based on microperforated panel structure with top absorbing cylinder;

Influence of geometry shapes of sound barrier on noise reduction effect in high speed railway

Through field measuring and theoretic calculation to train noise,combined with main influential factors to noise mitigation effect of railway sound barrier,proof wall is considered to be effective and economical to the noise sensitive building with 1 or 2 floor along railway when the train speed is lower than 250 km/h.

The influence of leakage noise on the noise drops efficiency of elevated structure noise barrier;

Noise barrier and activelly controlled noise barrier;

Study on computer analog of noise barrier prediction system;

The engineering prosperities of PMMA plastic board are described,which was applied in a true road traffic noise barrier building in China first time.

Based on architectural acoustics and the acoustic feafure of city traffic noise,the importance and means of establishing over head highway noise barrier are clarified from three aspects:noise source control,transmission and protection for victims.

The design of sound barrier was optimized.

To protect inhabitation environment,it is suggested that new technique should be utilized when the pavement were re-constructed,trees or shrubs should be planted to form green noise isolation belts,and sound barriers along the motorway should be constructed.

The reports that noise barriers is used in the pollution harness of railway noise is fewer in China.

Based on the present study and developing situation and the wouking principle of noise barriers,this article presents the design,application,structure and building material of noise barriers.

The thesis uses dimension analytical method to work out the similitude rule of noise barriers lab model test, via which noise barriers insertion loss can be measured.