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文章利用Cadna/A软件建立U型槽地道及地面交通3D仿真模型,研究地道敞开段交通噪声与道路交通的综合噪声对沿线建筑的影响。文章创造性的在封闭箱体段两端洞口设置垂直面声源模拟箱体内混响噪声,利用Cadna/A软件建立由地面逐渐向下延伸的低于地表的U型槽道路模型,得出地道类设施交通噪声影响及与地面轻轨、轨道、道路等交通噪声叠加值对沿线建筑影响规律,以及运营期不同距离、不同高度处沿线建筑受交通噪声影响结果,并通过设置声屏障对比设置声屏障前后的噪声影响差异,为工程有针对性的实施环保措施提供了科学依据。
The article uses Cadna / A software to establish the 3D simulation model of U-groove tunnel and ground transportation to study the influence of traffic noise and traffic noise on the buildings along the tunnel. The article creatively sets up vertical reverberation noise in the box of both sides of the closed box section and uses Cadna / A software to establish a U-groove road model below the surface extending downward from the ground, Impact of traffic noise on facilities and the impact of traffic noise superimposed with ground light rail, track and road on the buildings along the line, as well as the impact of traffic noise along the buildings at different distances and altitudes during operation period. By setting sound barrier comparison, Of the noise impact differences for the project targeted environmental measures to provide a scientific basis.