柳南客专线形测量与拟合实施方法及结果分析  

Implementation Method and Result Analysis of Linear Measurement and Fitting in Liuzhou-Nanning Passenger Dedicated Line

作　　者：杜兆宇 DU Zhaoyu(China Railway Fifth Survey and Design Institute Group Co.Ltd.,Beijing 102600,China)

机构地区：[1]中铁第五勘察设计院集团有限公司,北京102600

出　　处：《铁道建筑技术》2022年第12期79-83,共5页Railway Construction Technology

摘　　要：以柳南客专工程为实践,详细阐述线形测量与拟合实施方法,统计分析外业测量成果质量,对本次线形拟合的平曲线与原设计平曲线交点要素、竖曲线拟合坡度与原设计坡度进行对比分析;依据线性拟合结果,对轨道拨道量、轨道抬落道量进行统计分析。结果表明:本次线形测量可较好反映轨道的绝对位置及相对平顺性,拟合优化后的线形参数既能满足设计规范和线路维修规则要求,又能最大限度减小轨道调整量,为铁路养护提供技术支撑。Based on the project of Liuzhou-Nanning Passenger Dedicated Line, the implementation methods of linear measurement and fitting were introduced in detail in the paper. The quality of field measurement results is statistically analyzed, a comparative analysis of the intersection elements between the horizontal curve of this line type fitting and the original design horizontal curve was carried out, and the slope fitted by the vertical curve is compared and analyzed with the original design slope. According to the linear fitting result, a statistical analysis was conducted on the amount of track allocation and the amount of track lift and fall. The results show that this linear measurement well reflects the absolute position and relative smoothness of the track, the fitted and optimized linear parameters can not only meet the requirements of the design specifications and line maintenance rules, but also minimize the amount of track adjustment. The results provide technical support for railway maintenance.

关 键 词：柳南客专 线形测量 线路平面拟合 竖曲线拟合 轨道调整量 

分 类 号：U216.4[交通运输工程—道路与铁道工程] U212.24