有砟高铁捣固作业轨向平顺性控制方法  

Track alignment irregularity control method for tamping operation of ballasted high-speed railway

作　　者：时瑾[1] 张雨潇 陈云峰 王晓凯 王英杰[1] SHI Jin;ZHANG Yu-xiao;CHEN Yun-feng;WANG Xiao-kai;WANG Ying-jie(School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;Maintenance Department,China Railway Lanzhou Group Co.,Ltd.,Lanzhou 730000,Gansu,China;Railway Engineering Research Institute,China Academy of Railway Sciences Co.,Ltd.,Beijing 100082,China)

机构地区：[1]北京交通大学土木建筑工程学院,北京100044 [2]中国铁路兰州局集团有限公司工务部,甘肃兰州730000 [3]中国铁道科学研究院集团有限公司铁道建筑研究所,北京100082

出　　处：《交通运输工程学报》2022年第2期76-86,共11页Journal of Traffic and Transportation Engineering

基　　金：国家自然科学基金项目(52078035);中国国家铁路集团有限公司科技研究开发计划(N2020G011);中国铁道科学研究院集团有限公司重点课题(2020YJ110)。

摘　　要：为了提升有砟高铁捣固作业质量以满足平顺性控制要求,根据大机作业特征分析了拨道效果影响因素,研究了拨道量范围、拨道策略、拨道量顺坡率、设备精度与作业效果之间的影响关系;结合影响因素分析结果,基于中长波平顺性控制理论建立了拨道方案优化模型,提出了基于拨道量相关性的拨道效果评价方法,实现拨道效果影响因素与拨道方案制定过程的有效结合;在某高速铁路有砟轨道捣固作业之中,验证了轨向平顺性控制方法的有效性。研究结果表明:拨道量过大或过小、拨道量顺坡率超标、拨道策略不利、设备精度不良均容易造成大机拨道作业效果不佳,需在拨道方案制定过程中加强对这些因素的控制和管理;通过在轨向平顺性控制中引入拨道量调整系数,并有效控制中长波不平顺、拨道量限值等参数,可提高计算模型对捣固车固有作业特性的适应能力;基于该方法制定了某作业区段的拨道方案,方案满足轨道平顺性管理要求,符合大机作业特点;采用该方案实施作业后,轨向30m矢距差降至2mm,300m矢距差降至7mm,降幅分别达到50%和48%;静态轨道质量指数由0.89降至0.64,降幅28%,实践证明提出的轨向平顺性控制方法可有效提升高速铁路有砟轨道平顺性。In order to improve the quality of tamping operation of ballasted high-speed railway to meet the requirement of track alignment irregularity control,the influencing factors of lining effect were analyzed according to the operation characteristics of large machine,and the relationships between lining value range,lining strategy,lining value slope rate,equipment accuracy and operation effect were studied.Combined with the analysis result,based on the medium-long wavelength irregularity control theory,the optimization model of lining plan was established,and the method for evaluating the lining effect based on the lining correlation was proposed to realize the effective combination of the factors affecting the lining effect and the formulation process of lining plan.The effectiveness of track alignment irregularity control method was verified in the tamping operation of a ballasted high-speed railway.Research results show that too large or too small lining value,excessive lining value slope rate,unfavorable lining strategy and poor equipment accuracy are easy to lead to poor operation effect of large machine,so it is necessary to strengthen the control and management of the above factors in the formulating process of lining plan.By introducing the lining coefficient into the track alignment irregularity control and effectively controlling to the parameters such as the medium-long wavelength irregularity and the lining limit,the adaptability of the method to the inherent characteristics of tamping machine improves.The method is applied to formulate a lining plan for a certain operation section,and the lining effect meets the requirement of track alignment irregularity management and the characteristics of tamping machine.After the implementation of the plan,the 30and 300mvector distance differences reduce to 2and 7mm,with a decrease of 50%and 48%,respectively.The static track quality index reduces from 0.89to 0.64,with a decrease of 28%.The practice proves that the track alignment irregularity control method can effe

关 键 词：有砟高铁 大型养路机械 捣固作业 轨道不平顺 拨道量 评价方法 

分 类 号：U216.42[交通运输工程—道路与铁道工程]