Citation: | ZHANG Yuxiao, SHI Jin, NI Guohua, WANG Yingjie. Comprehensive Correction Method of Lifting Scheme for Tamping Operation of Ballasted Track[J]. Journal of Southwest Jiaotong University, 2023, 58(6): 1347-1356. doi: 10.3969/j.issn.0258-2724.20220526 |
In order to make the effect of tamping operation meet the expected goals, it is necessary to strictly control the unfavorable factors affecting the quality of the operation. Firstly, by taking the tamping operation data of ballasted track as the research object, the key factors affecting the operation quality were analyzed firstly, and the basic principles of the traditional methods to correct the lifting scheme were discussed. Secondly, by incorporating the multi-factor constraints into the target line construction process and correcting the lifting value according to the historical operation law, a comprehensive correction method of the lifting scheme for improving the adjustment effect of track height was constructed. Finally, by taking the ballasted track tamping operation of a high-speed railway as the engineering background, the implementation effect of the comprehensive correction method was verified. The results show that the application of targeted control measures in the process of lifting scheme formulation can improve the ability of the tamping operation to adjust the track irregularity. The coefficient of determination between the measured value and the target value of the alignment after tamping is as high as 0.92, and the mean square error between the planned lifting value and the actual lifting value is only 1.8 mm. The mid-chord value of 60 m is reduced to 4.0 mm, and the track quality index is reduced to 0.28 mm.
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