高架复合道路噪声声场分布研究

高架复合道路有效地缓解了交通拥挤的问题，但随之也带来了严重的噪声污染，以几何声学和衍射声学为理论基础，利用声级叠加原理，建立了高架复合道路噪声对临街建筑立面影响的预测模式。预测值与实测值基本相符，可直接应用于城市噪声预测。为城市发展规划尤其是城市高架复合道路的发展提供了科学依据。

Research of acoustic field for elevated combination road

Elevated Combination Road (ECR)has resolved the increasing traffic stream effectively. But at the same time, this kind of traffic system brought the noise pollution. Based on the principles of geometrical acoustics, and ditract acoustics, the model for predicting the combination traffic system statistically noise levels from a random complex traffic stream on a multi lane street was set up and the prediction value was equal to the practices. So the model can be used to predict the city noise level. The method may offer a scientific basis and means to make a reasonable program of ECR system in order to protect from and reduce the noise.