深圳地铁环境噪声与声屏障降噪数值模拟研究

Numerical Simulation on the Impact of Environment Noise and Noise Barrier of Shenzhen Metro Line 1

以深圳地铁1号线续建工程为例,采用先进的计算机数值模拟方法,建立了整条高架线路的大型噪声模拟预测数值模型,进行环境噪声评估与声屏障降噪数值模拟研究。给出了受影响区域水平面、横剖面,以及沿线建筑接收到的噪声水平等详尽的研究结果;对设置声屏障前后的降噪效果进行了仔细比较分析,并给出了声屏障的优化设计方案。本研究可供深圳地铁1号线续建工程环境噪声的评估及科学合理地进行环境噪声的防护,以及对类似的轨道交通工程的环境噪声研究作参考。

In this paper, a large-scale numerical model for noise prediction on the elevated track of Shenzben Metro Line 1 is built, the evaluation of the environment noise level and the optimization of the noise barrier are made. Through numerical analysis, detailed results of the noise distributions on horizontal planes and transverse planes of the influenced areas, the received noise level of the typical buildings along the track are obtained. The differences before and after the setting of the noise barrier are discussed, an optimum design scheme of the noise barrier is suggested. This research will not only be helpful for the evaluation of the environment noise level and the countermeasure against noise influences, but also be referential for dealing with the similar problems of urban rail transit project.