Frequency Domain Analysis to Vibration Respones of Subgrade Induced by Train at Seasonally Frozen Region of Daqing in China

Abstract:

In this paper, on-the-spot measurement of the subgrade vibration induced by rail transit is con-ducted. According to the data, the power spectrum and 1/3 octave band are analyzed. The re-sults show that when the passenger train drives, the vibration level away from centerline of 30-60 m will increase with the vehicle speed. The main frequency of vibration energy decrease from 50-70 Hz to 25-35 Hz and optimal frequency decrease from 57.98 Hz to 31.25Hz. The attenuating speed of high frequency vi-bration is greater than that of low frequency vibration. The attenuating speed of high frequency vi-bration is greater than that of low frequency vibration. The center frequency that greater than 25Hz decay gradually in 1/3 octave band, but the center frequency vibration level changes within the range 1 to 20 Hz is smaller.

• Periodical: Applied Mechanics and Materials (Volumes 587-589)
• Pages: 934-938
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.587-589.934
• Online since: July 2014
• Authors: Li Hui Tian*, Xian Zhang Ling, Li Na Wang, Feng Zhang
• Keywords: Frequency Domain, Rail Transit, Seasonal Frozen Soil, Subgrade Vibration

References

[1] L.N. Wang, X. Z. Ling, F. Zhang and S. J. Chen: Sciencepaper Online. Vol. 4 (2009), p.507 (in Chinese).

[2] J.G. Chen, H. Xia, S.L. Chen, and M.B. Su: Engineering Mechanics. Vol. 27 (2010), p.98 (in Chinese).

[3] Y. Ge: The Study on Environmental Vibration and Serviceability Induced by Trains on Ballastless Rail[D]. Chongqing: Chongqing University at Chongqing, (2010).

[4] Z.Y. Zhu, X. Z. Ling, F. Zhang, Q.L. Hu, and S.J. Chen: Journal of Harbin Institute of Technology. Vol. 41 (2009), p.41 (in Chinese).

[5] T. Chen, Z. J. Wu, A.L. Che, W. Ma and H. Shi: Journal of Earthquake Engineering and Engineering Vibration. Vol. 31 (2011), p.169 (in Chinese).