高架复合道路交通噪声的动态模拟及特征分析

基于高架复合道路的噪声及其对周围环境的各种影响因素，结合声波的传递衰减建立动态的仿真模型。由此计算实时噪声的等效声级及统计声级；为取得高架复合道路一侧垂直面和水平面的声场分布，在模拟分析中，也考虑多车道、车速、交通量、声屏障高度、林带布置等各种因素影响。

Dynamic modeling and Feature Analysis of traffic noise for elevated road

This paper models the dynamic traffic noise in elevated road and analyzes the impact of traffic noise on nearby buildings under various conditions. Combining microscopic traffic flow simulation technique, vehicle noise emission levels and noise propagation attenuation principle, the dynamic traffic noise simulation model for elevated road is established. And the instantaneous equivalent sound level and statistical sound level are calculated. The vertical and horizontal acoustic fields of the elevated road are simulated. The impacts of multi-lanes, vehicle speed, traffic volume, height of sound barrier and tree belt on the traffic noise level of the elevated road are analyzed. Also, the impact of traffic noise on different floors of buildings along the elevated road is analyzed. This work may provide a reference for traffic control, speed-limiting, sound barrier constructing and tree belt planning.