Characteristic Analysis of Track Irregularity Spectrum of Wuhan-Guangzhou High-Speed Railway
[1]Ll Zai-wei,LIAN Song-liang.Characteristic Analysis of Track Irregularity Spectrum of Wuhan-Guangzhou High-Speed Railway[J].Journal of Zhengzhou University (Engineering Science),2013,34(05):52-55.[doi:10.3969/j.issn.1671-6833.2013.05.011]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
34
Number of periods:
2013 05
Page number:
52-55
Column:
Public date:
2013-09-10
- Title:
- Characteristic Analysis of Track Irregularity Spectrum of Wuhan-Guangzhou High-Speed Railway
- Keywords:
- railway track; irregularity ; power spectral density; coherence analysis; time-frequency analysis
- CLC:
- U213.313
- Abstract:
- According to the track geometry data collected by track recording vehicles from Wuhan-Guangzhouhigh-speed railway,the characteristic of track irregularity is analyzed. Firstly,power spectral density is calcu-lated with Matlab program,and compared with European high-speed spectra of high irregularity and low irregu-larity.The statistic and analysis result indicates that the track irregularity spectrum values of Wuhan-Guang-zhou high-speed railway are close to European high-speed spectra of low irregularity except for some wave-length bands of track alignment irregularity spectrum values;this indicates that the track status of Wuhan-Guangzhou high-speed railway is better. Furthermore,the coherence functions are utilized to analyze the rela-tionship between track irregularities and vertical/lateral car body vibration accelerations. The range of detri-mental track irregularity wavelengths is larger than the common railroad.Finally,Hilbert marginal spectrum oftrack irregularity is calculated. The result shows that there are medium wave and long wave track irregularity inWuhan-Guangzhou high-speed railway.
- References:
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Last Update:
1900-01-01