铁道标准设计2017，Vol.61Issue(7)：116-120,5.DOI:10.13238/j.issn.1004-2954.2017.07.026
基于精度评定理论的高速铁路曲线桥梁水平位移监测方法分析研究
Analysis and Research on the Monitoring Method of Horizontal Displacement of High-speed Railway Curve Bridges based on Precision Evaluation Theory
摘要
Abstract
In view of the irregular linear increase of the current high-speed rail bridge identified in the monitoring of horizontal displacement of high-speed railway curve bridges, this paper demonstrates that the traditional precision analysis method can only identify the deviation in the vertical direction of the monitoring point along the axis of the bridge due to the simple error propagation theory, while, in the construction monitoring, it is required to hold the accuracy in a certain direction. Therefore, with reference to a bridge across Huaihe River, the error ellipse theory is used to evaluate the accuracy of small angle method, angle intersection method and distance intersection method. The results show that the small angle method is less suitable for the curve bridge, and the combination of the square and the polar coordinates can produce ellipse of less error and guarantee point position precision. It is hoped that the conclusions are helpful for relevant bridge engineering.关键词
高速铁路/水平位移/交会法/曲线桥/误差椭圆/精度评定Key words
Horizontal displacement/Horizontal displacement/Intersection method/Curve bridge/Error ellipse/Accuracy evaluation分类
交通工程引用本文复制引用
余腾,胡伍生,吴杰..基于精度评定理论的高速铁路曲线桥梁水平位移监测方法分析研究[J].铁道标准设计,2017,61(7):116-120,5.基金项目
江苏省科技支撑(工业)项目(BE2014026),江苏省高校自然科学研究项目(13KJB420004) （工业）
