Analysis on influence of rail maintenance on rail smoothness of high-speed railway

LI Ming

Volume 35 Issue 2

Jun. 2021

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LI Ming. Analysis on influence of rail maintenance on rail smoothness of high-speed railway[J]. Journal of Shanghai University of Engineering Science, 2021, 35(2): 144-149.

Citation:

LI Ming. Analysis on influence of rail maintenance on rail smoothness of high-speed railway[J]. Journal of Shanghai University of Engineering Science, 2021, 35(2): 144-149.

LI Ming. Analysis on influence of rail maintenance on rail smoothness of high-speed railway[J]. Journal of Shanghai University of Engineering Science, 2021, 35(2): 144-149.

Citation:

LI Ming. Analysis on influence of rail maintenance on rail smoothness of high-speed railway[J]. Journal of Shanghai University of Engineering Science, 2021, 35(2): 144-149.

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Analysis on influence of rail maintenance on rail smoothness of high-speed railway

LI Ming

Shanghai High-Speed Railway Maintenance Depot, China Railway Shanghai Group Co., Ltd., Shanghai 200439, China

Received Date: 2020-12-13
Publish Date: 2021-06-30

Abstract

Abstract

Rail maintenance is the core operation content of high-speed railway track structure repair, and its influence on line smoothness is directly related to the effective formulation of maintenance operation plans. Based on the track inspection data before and after maintaining of ballastless track of a 300 km/h high-speed railway, the time domain and frequency domain of vertical profile and track alignment irregularities and the coherent function with the vehicle vibration acceleration were analyzed, in the wavelength range of 1~42 m and 1~120 m, the influence of rail maintenance on track irregularity was figured out. The results show that the rail maintenance operation can only significantly improve track alignment irregularity track quality index (TQI) of 1~120 m. In the frequency domain distribution of track irregularity, rail maintenance has no significant effect on the composition of track irregularity wavelength, but improves the short-wave irregularity. Rail maintenance has certain effect on improving vertical vibration of train.
- high-speed railway,
- track irregularity,
- power spectral density,
- coherence analysis

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References(12)

References

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