基于改进四参数严密平差法的高铁CPⅢ相邻区段搭接处理方法研究  

Research on lapping processing of high-speed rail CPⅢ adjacent section based on improved four-parameter rigorous adjustment method

作　　者：蒋英豪 张献州 陈旭升 夏晨翕 陈霄 JIANG Yinghao;ZHANG Xianzhou;CHEN Xusheng;XIA Chenxi;CHEN Xiao(Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu 610031,China;State-province Joint Engineering Laboratory of Spatial Information Technology for High-Speed Railway Safety,Chengdu 610031,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611756

出　　处：《铁道科学与工程学报》2020年第2期273-279,共7页Journal of Railway Science and Engineering

基　　金：上海铁路局资助项目(LR01HX1135Y16035)

摘　　要：高速铁路轨道控制网(CPⅢ)主要为轨道铺设、精调及运营维护提供安全、稳定、可靠的控制基准。针对轨道控制网相邻区段的搭接精度会直接影响轨道平顺性的问题。基于假设检验理论,运用坐标差异性检验法对相邻搭接区段重叠点的独立平差坐标进行处理,得到重叠点坐标的差异性参数,以便科学合理地选择搭接点。分析经典四参数转换法的不足,并对经典四参数转化法进行优化,以此为据,比较分析经典四参数转换法和余弦函数平滑法的优劣,提出基于四参数转换的严密平差搭接法。结合具体工程实例,对3种搭接方法进行对比分析。研究结果表明:新的搭接处理方法可以有效改善轨道控制网搭接精度。The track control network(CPIII) of high-speed railway mainly provides safe, stable and reliable control datum for track laying, fine adjustment and operating maintenance, and the lapping accuracy of CPIII adjacent sections directly affect track regularity. Based on the theory of hypothesis testing, the coordinate difference test method was used to process the independent adjustment coordinates of the overlapping points at adjacent sections, and the difference parameters of the overlapping points were obtained in order to select the overlapping points scientifically and reasonably. The shortcomings of the classical four parameter transformation method were analyzed, and the classical four parameter transformation method was optimized. On this basis, the advantages and disadvantages of traditional four parameter transformation method and cosine function smoothing method were analyzed and compared, and a rigorous adjustment lapping method based on four parameter transformation was proposed. Combined with specific engineering examples, this paper compared and analyzed three overlapping methods, which shows that the new lapping processing method can improve the lapping accuracy of CPIII effectively.

关 键 词：区段搭接 差异性检验 改进四参数转换法 严密平差搭接 

分 类 号：P258[天文地球—测绘科学与技术]