顾及CPⅢ相对精度的平差方法在高铁控制网复测中的应用  

The Application of Adjustment Method in Repetition Survey of High-speed Railway Control Network Considering Relative Accuracy of CPⅢ

作　　者：付仁俊 李开华 周弥睿 FU Renjun;LI Kaihua;ZHOU Mirui(Shenzhen Aihua Survey Engineering Co.,Ltd.,Shenzhen 518022,China;Shenzhen Municipal Design and Research Institute Co.,Ltd.,Shenzhen 518037,China)

机构地区：[1]深圳市爱华勘测工程有限公司,深圳518022 [2]深圳市市政设计研究院有限公司,深圳518037

出　　处：《铁道勘察》2025年第2期13-17,34,共6页Railway Investigation and Surveying

摘　　要：在运营期高铁控制网复测工作中,由于起算点误差的引入,采用传统逐级平差控制网测量方法存在累计误差大的弊端,会导致在各项平差指标符合规范的情况下,CPⅢ点复测平面坐标与原测坐标相差较大,不利于运用CPⅢ网复测成果进行轨道平顺性的检测与维护。以某高铁运营期控制网复测为例,重点探讨顾及CPⅢ相对精度平差方法在高铁运营期控制网复测中的应用。首先进行CPⅢ控制网复测,在CPⅢ平面网复测时同步联测线上CPⅡ点,选择稳定的CPⅢ控制点进行约束,以获得CPⅢ控制网成果和联测的CPⅡ点成果;然后以部分CPⅡ点成果为约束获取CPⅡ控制网成果和联测的CPⅠ点成果;最后以部分CPⅠ点成果约束获取CPⅠ控制网成果。研究结果表明,该方法能够使CPⅢ控制网复测成果与原测成果尽可能地保持一致,有利于现场对控制网成果的使用和轨道养护维修,该方法在杭深线广东省境内362 km线路控制网复测工作中取得较好的应用效果。In the re-survey of the high-speed railway control network during its operational period,the introduction of errors from the initial control points leads to significant cumulative errors when traditional sequential adjustment methods are employed.This can result in substantial discrepancies between the resurveyed and originally measured plane coordinates of CPⅢpoints,even when all adjustment indicators comply with the standards,such discrepancies are detrimental to the detection and maintenance of track smoothness using the re-surveyed CPⅢnetwork data.Taking the re-survey of a high-speed railway operational control network as an example,this study focused on the application of an adjustment method that considers the relative accuracy of CPⅢ.Initially,the CPⅢcontrol network was re-surveyed,with CPⅡpoints on railway being simultaneously connected during the re-survey of the CPⅢplane network.Stable CPⅢcontrol points were selected for constraint to obtain the results of the CPⅢcontrol network and the connected CPⅡpoints.Subsequently,the results of the CPⅡcontrol network and the connected CPⅠpoints were obtained by using a subset of the CPⅡpoints as constraints.Finally,the results of the CPⅠcontrol network were acquired by applying constraints from a portion of the CPⅠpoints.The research findings indicate that the method enables the re-survey results of the CPⅢcontrol network to align as closely as possible with the original survey results,which facilitates the on-site use of the control network data and the maintenance of the railway tracks.This method has achieved commendable application results in the re-survey of the control network along a 362-kilometers section of the Hangzhou-Shenzhen railway within Guangdong Province.

关 键 词：高速铁路 控制网 复测 平差 相对精度 

分 类 号：U238[交通运输工程—道路与铁道工程] P258[天文地球—测绘科学与技术]