绳正法在高铁曲线整道的适用性分析  

Feasibility analysis of string lining method for HSR curve realignment

作　　者：魏晖[1,2] 朱洪涛[1] 殷华[1,3] 蔡军[2] 戚志刚[4] 

机构地区：[1]南昌大学机电工程学院,江西南昌330031 [2]江西科技学院汽车工程学院,江西南昌330098 [3]江西农业大学软件学院,江西南昌330045 [4]兰州铁路局工务处,甘肃兰州730000

出　　处：《铁道科学与工程学报》2014年第6期92-95,共4页Journal of Railway Science and Engineering

基　　金：国家自然科学基金地区科学基金资助项目(51468042);江西省自然科学基金资助项目(20142BAB206003);江西省科技支撑项目(工业领域)(20132BBE50036)

摘　　要：为研究以绳正法为代表的渐伸线方法在高速铁路曲线养护中的适用性,从而为高铁维修提供理论依据,通过建立绳正法的矩阵模型,利用条件数分析渐伸线方法的性态,并采用不确定度理论定量讨论实测正矢与拨后正矢间的误差传递关系。研究结果表明:绳正法的系统矩阵为病态,其计算对数据扰动敏感;由于计算存在累和,导致拨量与拨后正矢误差将随测桩号增加而增加,故绳正法拨道只适合短撬作业;鉴于高铁曲线正矢允差±2mm,绳正法在高铁曲线整道中并不适用,建议采用其他方法予以拨正。In order to determine the feasibility of involute methods in HSR（High -speed rail）curves realign-ment,and provide a theoretical basis for HSR maintenance,a matrix model of string lining method was estab-lished in this paper.From its conditional number,the behavior of string lining method was discussed,and the uncertainty theory was adopted to quantitatively analyze the relationship of error transmission between measured ordinates and desired ordinates.The research results show that,string lining method is sensitive to the data dis-turbance owing to its ill-conditioned operational matrix.On account of the accumulative operation in involute al-gorithm,the error of throw and irregularity tends to increase with the increase of station numbers,so this method is only suitable for short-range operation.In view of the ordinate tolerance of HSR curves equal to 2 mm,string lining method is not applicable to HSR curve realignment,and it is recommended that HSR curves should be rea-ligned with other methods.

关 键 词：绳正法 曲线整正 高速铁路 矩阵性态 不确定度 

分 类 号：U216.3[交通运输工程—道路与铁道工程]