高速铁路CPⅢ平面控制网相邻区段搭接方法研究  

Research of lapping methods between adjacent regions for CPⅢ plane network in high-speed railway

作　　者：黄志伟[1] 刘成龙[1] 王化光[1] 何波[1] 赵梦杰[1] 

机构地区：[1]西南交通大学土木工程学院,四川成都610031

出　　处：《铁道科学与工程学报》2010年第6期111-115,共5页Journal of Railway Science and Engineering

摘　　要：在建立高速铁路CPⅢ控制网时,由于相邻区段两次都测量存在误差,因此必须需要对相邻区段重叠CPⅢ点的坐标进行搭接。在原有搭接方法的基础上,提出余弦函数平滑的搭接方法,介绍了该方法的数学模型,推导了余弦函数平滑后CPⅢ相邻点间的相对点位精度计算模型。理论分析和实测数据的对比分析结果表明:该方法在区段搭接中较传统方法好,值得在高速铁路工程实践中推广应用。When CPⅢ plane network is established,CPⅢ points coordinates in the adjacent overlapping regions must be lapped due to the errors of two times surveys in adjacent regions.This paper introduces the method of cosine function smoothing on the basis of the original method.It describes the mathematical model of the method,and deducts the computational modeling of accuracy of relative positioning between adjacent CPⅢ points after cosine function smoothing.Between the theoretical analysis and the observed data,the comparative analysis results demonstrate that the method is the better than traditional methods in lap joint well which worths the practice of high-speed railway project to promote application.

关 键 词：相邻区段搭接 余弦函数平滑 相对点位精度 轨道控制网CPⅢ 

分 类 号：U202.4[交通运输工程—道路与铁道工程]