A major limitation in the design of magnetic levitation systems is the problem of environmental vibration on high-speed maglev trains. Chinese proposed promulgation of the Environmental Quality Standard for Vibration and the current standard GB 10,070–88 Urban Area Environmental Vibration Measurement Procedures use different weighting curves, in order to gain a deeper investigating of the impact of the weighting curves on the results of high-speed maglev environmental vibration evaluation, field test were conducted on the Shanghai high-speed maglev demonstration line, comparative analysis of vibration levels calculated using different weighting curves. The results show that the vertical Wk-weighted Z vibration levels are larger than the Z-weighted, and the maximum difference between the two is 3.59 dB. And the difference gradually decreases with increasing distance. There is only a difference of 1.61 dB at 30 m, which is mainly due to the distribution of vibration energy in the frequency band. The weighting curve affects the attenuation of vibration level with distance, and the horizontal vibration level caused by high-speed maglev is much smaller than the vertical vibration level. The vertical Z vibration levels of the two kinds of weighting at each measurement point satisfy the standard limit value. The study can provide a reference for the research of high-speed maglev environmental vibration standards.

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Analysis of the Impact of Weighting Methods on the Environmental Vibration Evaluation Results of High-Speed Maglev Trains

  • D. R. Guo,
  • J. Y. Huang,
  • Z. Y. Zhang,
  • X. D. Yang,
  • Y. D. Wang,
  • W. Y. Gao

摘要

A major limitation in the design of magnetic levitation systems is the problem of environmental vibration on high-speed maglev trains. Chinese proposed promulgation of the Environmental Quality Standard for Vibration and the current standard GB 10,070–88 Urban Area Environmental Vibration Measurement Procedures use different weighting curves, in order to gain a deeper investigating of the impact of the weighting curves on the results of high-speed maglev environmental vibration evaluation, field test were conducted on the Shanghai high-speed maglev demonstration line, comparative analysis of vibration levels calculated using different weighting curves. The results show that the vertical Wk-weighted Z vibration levels are larger than the Z-weighted, and the maximum difference between the two is 3.59 dB. And the difference gradually decreases with increasing distance. There is only a difference of 1.61 dB at 30 m, which is mainly due to the distribution of vibration energy in the frequency band. The weighting curve affects the attenuation of vibration level with distance, and the horizontal vibration level caused by high-speed maglev is much smaller than the vertical vibration level. The vertical Z vibration levels of the two kinds of weighting at each measurement point satisfy the standard limit value. The study can provide a reference for the research of high-speed maglev environmental vibration standards.