• CN:11-2187/TH
  • ISSN:0577-6686

›› 2005, Vol. 41 ›› Issue (11): 149-152.

• 论文 • 上一篇    下一篇

基于频域方法的轨道随机振动特性及试验验证分析

王开云;蔡成标;徐志胜   

  1. 西南交通大学牵引动力国家重点实验室
  • 发布日期:2005-11-15

ANALYSIS OF RANDOM VIBRATION CHRACTERISTICS AND VERIFICATION OF TRACK SRUCTRUE ON FREQUENCY DOMAIN METHOD

Wang Kaiyun;Cai Chengbiao;Xu Zhisheng   

  1. Traction Power State Key Laboratory, Southwest Jiaotong University
  • Published:2005-11-15

摘要: 基于系统工程思想,运用频域分析方法,对轨道结构随机振动特性进行仿真计算与分析,并结合铁路现场测试结果对理论计算结果进行试验验证。结果表明:钢轨振动能量主要集中在1 300 Hz附近,而中、低频率的振动主要体现为轨枕与道床的振动;在整个分析频域范围之内,仿真计算得到的轨道结构振动加速度功率谱密度与试验测试结果吻合较好,且轨道结构振动加速度平均值的计算与试验结果差异不大。

关键词: 轨道, 频域, 系统工程, 验证, 振动

Abstract: From the systems engineering point of view, the random vibration characteristics of track structure are simulated and the simulation results are verified with the field experiments on frequency domain method in this paper. Results show that vibration energy of rail is concentrated nearby 1 300 Hz and energies in low and medium frequency are mainly reflected in the vibrations of sleeper and ballast. In total frequency domain, it is good correlation in power spectral density of track accelerations between simulation and experiment and the difference in awerage accelerations of track structure with two type results is not obvious.

Key words: Frequency domain, Systems engineering, Track, Verification, Vibration

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