作　　者： ; ;

机构地区： 五邑大学机电工程学院

出　　处： 《五邑大学学报（自然科学版）》 2013年第3期68-73,共6页

摘　　要： 研究了列车在进出声屏障时的气动性能.将计算流体动力学方法(CFD)应用于广珠城际铁路江门段的高架轨道交通声屏障建设中,得出车头经过测点时产生的正负压力峰值之比为0.64,车尾经过时产生的正负压力峰值之比为0.70.分析的结果表明,扩建住宅区附近的声屏障,对减小噪声的影响很小;降低列车经过时行驶的速度,降噪效果明显.声屏障合理建设长度为住宅区范围及其前后50m的距离;通过高密度住宅区时,列车应降速通过. Aerodynamic forces of the train going in or out the noise barrier area is studied and the computational fluid dynamics （CFD） method is applied to the construction of a noise barrier for the Jiangmen elevated rail transit section of the Guangzhou-Zhuhai Intereity Railway. The measuring shows that the ratio of the peak positive and negative pressures is 0.64 when the locomotive is passing the measuring point and the ratio is 0.70 when the rear of the train is passing. Analysis results show that extending the sound barrier near a residential area is insignificant in reducing the noise level while reducing the speed of the train can significantly do so; the reasonable length of sound barriers for the elevated rail transit in Jiangmen is 50 m extending beyond a residential area at each end; the train should slow down when it passes through high-density residential areas.

关 键 词： 计算流体动力学 高架轨道交通 声屏障

领　　域： [交通运输工程]