Digital Tamping Operation and Effect Evaluation of Yinchuan-Xi'an Ballast High Speed Railway
Based on the background of the precise adjustment and tamping work of the newly built Yinchuan-Xi'an ballasted high speed railway track,research was conducted on key task such as continuous rapid measurement and targeted control of large machinery operations.A"human-machine network"digital tamping operation system was established,and the improvement effect of static and dynamic track smoothness was analyzed.The tamping effect was dynamically evaluated.The results show that the combination of laser positioning instrument and inertial navigation measurement method can improve measurement efficiency while ensuring measurement accuracy.By implementing targeted control measures for large machinery operations and constraining the smoothness of the plan,targeted plans can be formulated for different stages of tamping machinery to effectively improve the effectiveness of precision tamping operations.After the digital tamping operation,the Track Quality Index of the section's dynamic inspection track decreased to within 2.5 mm,and deviations in horizontal,triangular,track direction,and height were significantly reduced.The improvement rate of most indicators was over 50%,effectively improving the smoothness of the line.The derailment coefficient and wheel load reduction rate have been reduced by about 60%and 70%,and the vertical vibration acceleration of the vehicle body has been reduced by 80%,effectively improving operational comfort and safety.
high speed railwayballasted tracktrack measurementtamping processtrack irregularity
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