新建有砟线路精测精捣起道量修正算法  

Lifting Correction Algorithm of Precise Inspection and Tamping for New-built Railway

作　　者：江来伟 岑敏仪 赵栋[4] JIANG Laiwei;CEN Minyi;ZHAO Dong(Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu Sichuan 611756,China;State-province Joint Engineering Laboratory of Spatial Information Technology of High-speed Railway Safety,Chengdu Sichuan 610031,China;MOE Key Laboratory of High-speed Railway Engineering,Southwest Jiaotong University,Chengdu Sichuan 610031,China;Maintenance Department,China Railway Lanzhou Bereau Group Co.Ltd.,Lanzhou Gansu 730000,China)

机构地区：[1]西南交通大学地球科学与环境工程学院,四川成都611756 [2]高速铁路运营安全空间信息技术国家地方联合工程实验室,四川成都610031 [3]西南交通大学高速铁路线路工程教育部重点实验室,四川成都610031 [4]中国铁路兰州局集团有限公司工务处,甘肃兰州730000

出　　处：《铁道建筑》2019年第6期127-131,共5页Railway Engineering

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 significant 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 verified 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 influence 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.

关 键 词：有砟轨道 精测精捣 统计分析 轨道高低 起道系数 

分 类 号：U216.42[交通运输工程—道路与铁道工程]