| 轨道道床影响高速铁路隧道出口微压波数值探讨 |
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| 引用本文： | 耿烽.轨道道床影响高速铁路隧道出口微压波数值探讨[J].南京工程学院学报(自然科学版),2008,6(1):16-20. |
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| 作者姓名： | 耿烽 |
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| 作者单位： | 南京工程学院车辆工程系,江苏,南京,211167 |
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| 基金项目： | 南京工程学院校科研和教改项目 |
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| 摘 要： | 基于一维可压缩非定常空气流动理论，利用数值方法计算了高速列车进入隧道引起入口压缩渡在不同轨道道床（板式道床与碎石道床）隧道内的传播情况，以及在隧道出口附近形成的微压波特征．通过对轨道道床不同参数的计算，定性与定量分析了轨道道床对隧道出口处微压渡强度的影响，结果表明在较长隧道中铺设碎石道床是一个有效的微压渡减缓措施．
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| 关 键 词： | 高速列车 隧道 微压渡 轨道道床 |
| 文章编号： | 1672-2558(2008)01-0016-05 |
| 修稿时间： | 2007年3月22日 |
Numerical Analysis of Micro-pressure Wave Radiated from High-speed Railway Tunnel Exit Based on the Track Roadbed |
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| GENG Feng.Numerical Analysis of Micro-pressure Wave Radiated from High-speed Railway Tunnel Exit Based on the Track Roadbed[J].Journal of Nanjing Institute of Technology :Natural Science Edition,2008,6(1):16-20. |
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| Authors: | GENG Feng |
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| Institution: | GENG Feng(Dept.of Vehicle Engineering,Nanjing Institute of Technology,Nanjing 211167,China) |
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| Abstract: | In accordance with the one-dimensional unsteady compressible air flow theory,numerical method was used to examine the propagation of entrance compression wave,cased by a high-speed train's entering into a tunnel,in different track roadbeds(slab roadbed and ballast roadbed).What was investigated involved characteristics of micro-pressure wave near tunnel exit as well.Different parameters of track roadbeds were calculated.The results of the qualitative and quantitative analysis indicated that laying ballast r... |
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| Keywords: | high-speed train tunnel micro-pressure wave track roadbed |
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