Volume 26 Issue 7
Jul.  2026
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WEI Zi-long, SUN Xian-fu, YANG Fei, ZHANG Hang. Diagnosis method for periodic irregularity of track slab on high-speed railway driven by multi-source dynamic inspection data[J]. Journal of Traffic and Transportation Engineering, 2026, 26(7): 15-26. doi: 10.19818/j.cnki.1671-1637.2026.101
Citation: WEI Zi-long, SUN Xian-fu, YANG Fei, ZHANG Hang. Diagnosis method for periodic irregularity of track slab on high-speed railway driven by multi-source dynamic inspection data[J]. Journal of Traffic and Transportation Engineering, 2026, 26(7): 15-26. doi: 10.19818/j.cnki.1671-1637.2026.101
shu

Diagnosis method for periodic irregularity of track slab on high-speed railway driven by multi-source dynamic inspection data

doi: 10.19818/j.cnki.1671-1637.2026.101
  • 1.

    Infrastructure Inspection Research Institute, China Academy of Railway Sciences Corporation Limited, Beijing 100081, China

  • 2.

    Planning and Standard Research Institute of the National Railway Administration, Beijing 100055, China

Funds:

National Natural Science Foundation of China 52308473

Science and Technology Research and Development Project of China State Railway Group Co., Ltd. K2024T006

Science and Technology Research and Development Project of China Academy of Railway Sciences Corporation Limited 2024YJ244

More Information
  • Corresponding author: SUN Xian-fu, research assistant, E-mail: sunxf95@163.com
  • Received Date: 2025-06-05
  • Accepted Date: 2025-10-27
  • Rev Recd Date: 2025-08-15
  • Publish Date: 2026-07-28
    Abstract
  • To achieve precise identification and scientific evaluation of periodic irregularity of track slabs on high-speed railway, based on the track geometry and vehicle dynamic response data collected from high-speed comprehensive inspection trains, a method for synchronous mileage treatment and periodic feature extraction from multi-source dynamic inspection data was proposed, and the time-domain and frequency-domain characteristics of multi-source dynamic inspection data in the periodic irregularity section of track slab were obtained. A method for identifying periodic irregularity of track slabs was constructed by integrating synchrosqueezed wavelet transform and deformation counting method. A comprehensive evaluation method for the periodic irregularity of track slabs was proposed by combining the vertical acceleration of the frame. Research results indicate that the proposed identification method can effectively capture the periodic irregularity of track slabs and evaluate the severity. As the sliding window length is set to 50 m, the threshold values for periodic irregularity deformation of track slabs are set to 0.8 mm for level Ⅰ and 1.5 mm for level Ⅱ, with the corresponding proportional parameters both set to 3/4; a good balance can be achieved between identification accuracy and missed detection rate, and the identification accuracy can reach 92%. Based on measured data from three high-speed railway lines with significant periodic irregularity of track slabs, it is concluded that there is a strong correlation between the vertical acceleration of the frame and periodic irregularity of track slabs in the 4-7 m wavelength band. The 95% quantile of the vertical acceleration of the frame in the 4-7 m wavelength band is between 3.9 and 8.5 m·s-2. The vertical acceleration of the frame in the 4-7 m wavelength band can be evaluated for the impact of periodic irregularity of track slabs by exceeding the threshold of 5 m·s-2 for 5 consecutive waves. This method provides guidance for accurately diagnosing the service status of high-speed railway tracks and scientifically conducting maintenance and repair operations.

     

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