新建有砟线路精测精捣起道量修正算法
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摘要
为解决新建有砟线路精测精捣作业中,轨道高低调整效果与预期效果差异显著、重复捣固作业遍数增多的难题,对影响纵向抄平作业精度的因素进行了分析。以新建有砟线路不同遍数的精测精捣数据为研究对象,从峰值管理和均值管理角度探讨轨道高低平顺性变化的内在关联性,提出一种提高轨道高低调整效果的起道量修正算法,并在精测精捣作业中对该算法的有效性进行了验证。结果表明:道床弹性不均及稳定作业引发轨道非均匀性下沉是精捣作业不理想的根本原因;起道量修正算法可在一定程度上削弱轨道非均匀性下沉对精捣作业的影响;运用起道量修正算法指导捣固车作业,不仅可减少1～2遍捣固次数,且轨道高低平顺性进一步提升。
In order to solve the thorny problems that there is signif icant different between the track longitudinal level adjustment effect and expected effect and the repeated tamping operation times increase in the precise inspection and tamping operation of the new-built railway,the factors that affect the accuracy of the longitudinal leveling operation were analyzed.Taking the precise inspection and tamping data with different times collected from a new-built ballast track as the research object,the intrinsic relevance of track longitudinal level regularity changing was explored from the perspective of peak and mean management. A lifting correction algorithm( LCA) for improving track longitudinal level adjustment effect was proposed,and the effectiveness of this algorithm was verif ied in the precision inspection and tamping operation.The results indicate that the track non-uniform subsidence caused by ballast bed elastic uneven and stabilizing operation is the root cause for the unsatisfactory precise tamping operation,and LCA can alleviate the negative inf luence caused by track non-uniform subsidence on precise tamping operation.The LCA is used to guide the operation of tamping wagon,which can not only reduce the tamping times by 1 ～ 2 times,but also further improve the smoothness of track longitudinal level.
In order to solve the thorny problems that there is signif icant different between the track longitudinal level adjustment effect and expected effect and the repeated tamping operation times increase in the precise inspection and tamping operation of the new-built railway,the factors that affect the accuracy of the longitudinal leveling operation were analyzed.Taking the precise inspection and tamping data with different times collected from a new-built ballast track as the research object,the intrinsic relevance of track longitudinal level regularity changing was explored from the perspective of peak and mean management. A lifting correction algorithm( LCA) for improving track longitudinal level adjustment effect was proposed,and the effectiveness of this algorithm was verif ied in the precision inspection and tamping operation.The results indicate that the track non-uniform subsidence caused by ballast bed elastic uneven and stabilizing operation is the root cause for the unsatisfactory precise tamping operation,and LCA can alleviate the negative inf luence caused by track non-uniform subsidence on precise tamping operation.The LCA is used to guide the operation of tamping wagon,which can not only reduce the tamping times by 1 ～ 2 times,but also further improve the smoothness of track longitudinal level.
引文
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[2]SAUSSINE G,AZMA E,PERALES R,et al.Compaction of Railway Ballast During Tamping Process:A Parametric Study[J].AIP Conference Proceedings,2009,1145(1):469-472.
[3]AUDLEY M,ANDREWS J D.The Effects of Tamping on Railway Track Geometry Degradation[J].Proceedings of the Institution of Mechanical Engineers,Part F:Journal of Rail and Rapid Transit,2013,227(4):376-391.
[4]CAETANO L F,TEIXEIRA P F.Predictive Maintenance Model for Ballast Tamping[J].Journal of Transportation Engineering,2016,142(4):1-9.
[5]徐伟昌.大型养路机械捣固作业轨道质量评价指数研究[J].铁道建筑,2014,54(7):139-142.
[6]ESVELD C.Modern Railway Track[M].Delft:Delft University of Technology,2001.
[7]周恭维.连续式捣固车起拨道补偿控制系统研究[D].长沙:中南大学,2010.
[8]朱建华.线路精捣施工工艺研究[D].成都:西南交通大学,2013.
[9]罗林,张格明,吴旺青,等.轮轨系统轨道平顺状态的控制[M].北京:中国铁道出版社,2006.
[10]易思蓉.铁道工程[M].3版.北京:中国铁道出版社,2015.
[11]中华人民共和国铁道部.铁路线路修理规则:铁运[2006]146号[S].北京:中国铁道出版社,2006.
[12]中华人民共和国铁道部.既有线轨道不平顺质量指数标准及管理暂行办法:运基线路[2009]41号[S].北京:中国铁道出版社,2009.