单侧形式CPIII平面网测量的可行性研究  

The feasibility research of the one-tailed CPIII plane network measurement

作　　者：唐恩奎 刘成龙[1,2] 刘志[1,2] 杨思山 

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610031 [2]西南交通大学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

出　　处：《铁道科学与工程学报》2016年第12期2368-2374,共7页Journal of Railway Science and Engineering

基　　金：长江学者和创新团队发展计划资助项目(PCSIRT)

摘　　要：运营中的双线铁路在维护过程中,运营天窗可能为非垂直天窗,在此情况下为了实现CPIII平面网的外业测量,提出采用一种单侧形式运营双线铁路轨道控制网(下文简称CPIII网)的测量方法。不同于传统的轨道控制网测量,该方法只对靠近左线(或右线)的CPIII点进行构网测量,并联测左侧(或右侧)的CPI或CPII控制点,即构建单侧形式的CPIII平面网观测网形。通过CAD仿真数据的计算实验以及实测数据的平差计算,对单侧形式的CPIII平面网外业测量网形及其精度情况进行计算分析。研究结果表明,这样的单侧CPIII网平面精度能够满足高速铁路工程测量规范相关的精度要求。During the maintenance process of the operated double-track railway, the skylight may be non-verti-cal skylight. In order to perform the filed survey of the CPⅢ plane network, a one-tailed measurement method of the CPⅢ of the double-track railway was proposed. Compared with traditional CPⅢ measurement, this method just measures the CPⅢ points and the CPⅠ or CPⅡ points near the left or right line, which constructs the plane measurement network of one-tailed CPⅢ. Through the CAD simulating calculation and the adjustment of meas-ured data, the computation analysis has been conducted for the network and precision of one-tailed CPⅢ plane network. The studied result shows that the plane precision of this network can meet the requirements of high-speed rail project measurement accuracy specification.

关 键 词：双线铁路 非垂直天窗 单侧轨道控制网 仿真计算 平面精度 

分 类 号：P258[天文地球—测绘科学与技术]