Volume 22 Issue 2
Apr.  2022
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SHI Jin, ZHANG Yu-xiao, CHEN Yun-feng, WANG Xiao-kai, WANG Ying-jie. Track alignment irregularity control method for tamping operation of ballasted high-speed railway[J]. Journal of Traffic and Transportation Engineering, 2022, 22(2): 76-86. doi: 10.19818/j.cnki.1671-1637.2022.02.005
Citation: SHI Jin, ZHANG Yu-xiao, CHEN Yun-feng, WANG Xiao-kai, WANG Ying-jie. Track alignment irregularity control method for tamping operation of ballasted high-speed railway[J]. Journal of Traffic and Transportation Engineering, 2022, 22(2): 76-86. doi: 10.19818/j.cnki.1671-1637.2022.02.005

Track alignment irregularity control method for tamping operation of ballasted high-speed railway

doi: 10.19818/j.cnki.1671-1637.2022.02.005
Funds:

National Natural Science Foundation of China 52078035

Science and Technology Research and Development Project of China National Railway Group Co., Ltd. N2020G011

Project of Science and Technology of China Academy of Railway Sciences Co., Ltd. 2020YJ110

More Information
  • Author Bio:

    SHI Jin(1980-), male, professor, PhD, jshi@bjtu.edu.cn

  • Received Date: 2021-09-28
  • Publish Date: 2022-04-25
  • In order to improve the quality of tamping operation of ballasted high-speed railway to meet the requirement of track alignment irregularity control, the influencing factors of lining effect were analyzed according to the operation characteristics of large machine, and the relationships between lining value range, lining strategy, lining value slope rate, equipment accuracy and operation effect were studied. Combined with the analysis result, based on the medium-long wavelength irregularity control theory, the optimization model of lining plan was established, and the method for evaluating the lining effect based on the lining correlation was proposed to realize the effective combination of the factors affecting the lining effect and the formulation process of lining plan. The effectiveness of track alignment irregularity control method was verified in the tamping operation of a ballasted high-speed railway. Research results show that too large or too small lining value, excessive lining value slope rate, unfavorable lining strategy and poor equipment accuracy are easy to lead to poor operation effect of large machine, so it is necessary to strengthen the control and management of the above factors in the formulating process of lining plan. By introducing the lining coefficient into the track alignment irregularity control and effectively controlling to the parameters such as the medium-long wavelength irregularity and the lining limit, the adaptability of the method to the inherent characteristics of tamping machine improves. The method is applied to formulate a lining plan for a certain operation section, and the lining effect meets the requirement of track alignment irregularity management and the characteristics of tamping machine. After the implementation of the plan, the 30 and 300 m vector distance differences reduce to 2 and 7 mm, with a decrease of 50% and 48%, respectively. The static track quality index reduces from 0.89 to 0.64, with a decrease of 28%. The practice proves that the track alignment irregularity control method can effectively improve the regularity of ballasted high-speed railway. 3 tabs, 15 figs, 26 refs.

     

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