高铁隧道噪声病害机理与降噪设计仿真研究

发布时间：2018-06-25 06:56

  本文选题：高速铁路 + 气动噪声　； 参考：《公路》2017年04期

【摘要】：针对我国高铁隧道量多线长、隧道噪声危害大、乘车舒适性低等特点,首先对高铁隧道噪声产生机理进行了研究,重点探讨了阻塞比对隧道噪声的影响,并在国内研究的基础上提出了合理的降噪方案——修建新型缓冲设施,即E形缓冲设施和梯形缓冲设施。利用大型声学仿真软件Raynoise对无缓冲型,含E形、含梯形缓冲设施的隧道进行仿真研究,然后对比分析高速列车在3种隧道内运行过程中,其噪声水平的变化情况。仿真结果表明,梯形缓冲设施具有良好的降噪效果。
[Abstract]:In view of the characteristics of high speed railway tunnel in our country, such as the quantity of multiple lines, the great harm of tunnel noise and the low ride comfort, the noise generation mechanism of high speed railway tunnel is studied, and the influence of blocking ratio on tunnel noise is discussed. On the basis of domestic research, a reasonable noise reduction scheme is put forward, which is to build a new buffer facility, namely, E type buffer facility and trapezoid buffer facility. The tunnel with no buffer, E shape and trapezoid buffer is simulated by Raynoise, and the noise level of high speed train in three kinds of tunnels is compared and analyzed. The simulation results show that the trapezoidal buffer has a good noise reduction effect.
【作者单位】： 解放军理工大学野战工程学院;
【分类号】：U453.82
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本文编号：2065064