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Home > Archive>Volume 51, Issue 1, 2023 >99-107. DOI:10.11908/j.issn.0253-374x.21601
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Geometric Irregularity Prediction Model of Ballasted Track Considering Tamping and Grinding
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1.Key Laboratory of Road and Traffic Engineering of the Ministry of Education， Tongji University， Shanghai 201804，China;2.Key Laboratory of Structural Durability and System Safety of Shanghai Rail Transit， Tongji University， Shanghai 201804，China;3.Shanghai Metro Maintenance and Guarantee Co.， Ltd.， Shanghai 200070，China;4.Shuohuang Railway Development Co.， Ltd.， Suning 062350，China

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U216

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    Abstract:

    The prediction of track geometric irregularity is the basis for the railway department to realize the transformation from periodic repair to state repair， which is the key to formulating the maintenance strategy. However， in the existing prediction models， the calculation is complex， and the impact of tamping， grinding and other composite operations on track irregularity is rarely considered. In order to improve the operation efficiency and prediction accuracy， considering the differences of different operation sections， taking the geometric irregularity deterioration function of ballasted track and the recovery function under tamping and grinding operation as the research object， the unique deterioration matrix of each section is formed by using numerical fitting and other methods， and the geometric irregularity prediction model of ballasted track under tamping and grinding combined operation is established. The results show that the established model is effective and the results meet the needs of field prediction.

    Reference
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XU Yude, WU Xuanqing, LIU Silei, XUE Zhiqiang, LI Shaozheng, LI Changsheng. Geometric Irregularity Prediction Model of Ballasted Track Considering Tamping and Grinding[J].同济大学学报(自然科学版),2023,51(1):99~107

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  • Received:December 20,2021
  • Online: February 02,2023
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