高速公路声屏障优化设计的模拟计算研究

选取一种声屏障作为研究对象，根据拟建高速公路周边噪声敏感点的分布特点，构建现实的模拟场景，利用Cadna/A噪声模拟软件建立声屏障降噪预测模型，对该声屏障设置参数进行了优化研究.研究结果发现：在现实的模拟场景中，当右侧声屏障长440 m高3.6 m，左侧声屏障长400 m高4.4 m时，该声屏障不仅使所有敏感点达标，且实现了建设成本的最小化.

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 440 meters in length and 3.6 meters in height, and the left side is 400 meters in length and 4.4 meters in height.