Track irregularity, which is the main vibrating resource of vehicles and one of the main factors to limit a train's highest speed, plays a very important part in the safety, stability, and comfort of train travel. The statistic samples used in this paper are collected by track recording vehicles from the Beijing-Guangzhou Railway. An elimination method of abnormal value and a zero mean normalization method of track irregularity are used in the data preprocessing of track irregularities on this railway. The change rate of track irregularity is calculated using the methods of linear interpolation and wavelet analysis. The PSD of track irregularity is calculated by using the periodogram method. The statistical and analytical results indicate that the PSD of track irregularity of the Beijing-Guangzhou Railway contains a number of different amplitudes and wavelengths of the harmonic part and a wide wavelength range. A comparative study of a 12-month track spectrum indicates that track quality is the worst in the month of August and the best in February. Finally, the track irregularity spectrum is suggested as an index to control track geometric irregularity.
Analysis of Track Irregularity Spectrum of Beijing-Guangzhou Railway
Tenth International Conference of Chinese Transportation Professionals (ICCTP) ; 2010 ; Beijing, China
ICCTP 2010 ; 722-730
22.07.2010
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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