Comparison on General Track Spectrum for Chinese Main Railway Lines and Track Spectrum of American Railway Lines

Abstract:

The general track spectrum of Chinese main railway lines (ChinaRLS) and the track spectrum of American railway lines (AmericaRLS) are compared in terms of character of frequency domain, statistical property of time domain samples and dynamic performance. That the wavelength range of the ChinaRLS, which is characterized by the three levels according to the class of railway line, is less than AmericaRLS at common wave band of 1~50m is calculated. Simultaneously, the mean square values of two kinds of track spectra are provided at the detrimental wave bands of 5~10m, 10~20m, and so on. The time-histories of ChinaRLS and AmericaRLS are simulated according to the trigonometric method, and the digital statistical nature of simulated time samples is analyzed. With inputting the two kinds of time-histories into the vehicle-railway system, the comparative analysis of the two kinds of dynamic performances for ChinaRLS and AmericaRLS is done in terms of car body acceleration, rate of wheel load reduction, wheel/rail force, and the dynamic responses of track structure. The result shows that ChinaRLS can characterize the feature of the Chinese track irregularity better than AmericaRLS, the track irregularity with the ChinaRLS of 200km/h is superior to the AmericaRLS, and the track irregularity with the ChinaRLS of 160km/h corresponds to with the sixth of AmericaRLS.

• Periodical: Advanced Materials Research (Volumes 250-253)
• Pages: 3822-3826
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.250-253.3822
• Online since: May 2011
• Authors: Xian Mai Chen, Xia Xin Tao, Gao Hang Cui, Fu Tong Wang
• Keywords: General Track Spectrum, Track Irregularity, Track Spectra, Track Spectra for American Railway Lines

References

[1] Wang F. T., Zhou J. S., Ren L. H.: Journal of the China Railway Society Vol. 24(5) (2002), P. 21-27(in Chinese)

[2] Chen X. M., Wang L., Tao X. X., etc.: China Railway Science Vol 29(3) (2008), P. 73-77 (in Chinese)

[3] Xia H., Zhang N. Vehicle-Structural dynamic interaction. Beijing: China Scientific Press (2002) (in Chinese)

[4] Zhai W. M. Vehicle-track coupling Dynamics (Third Edition). Beijing: Beijing: Science Press (2007) (in Chinese)

[5] Lei X. Y. 1998. Numerical method on railway structures. Beijing: China Railway Publishing House (1998) (in Chinese)

[6] Chen X. M.. Further study on track irregularities power spectrum density of vehicle-track system. Harbin: Post Doctoral Research Report, Harbin Institute of Technology (2008) (in Chinese)