Simulation Research on the Noise Barrier Optimization Design on Highway

One type of noise barrier was chose as subjects,and the realistic simulation circumstance was constructed based on the distribution features of noise sensitive points near the proposed highway.Then,the prediction model of noise-reduction effects of noise barrier was built by Cadna/A software,and by utilizing this model,the parameters of this type of noise barrier were optimized.The research results revealed that this type of noise barrier can not only decrease the noise value of sensitive points to reach the environmental standards,but also minimize the construction cost when the right side noise barrier is 440meters in length and 3.6meters in height,and the left side is 400meters in length and 4.4meters in height.