长大钢桁梁上CPⅢ高程网多值性问题的解决方法研究  

Research on solution to the multi-value problem of CPⅢ height network on long-and-large steel truss girders

作　　者：刘林[1] 刘成龙[1] 郭良浩[2] 孟东坡[1] 

机构地区：[1]西南交通大学,成都610031 [2]中铁第四勘察设计院集团有限公司,武汉430063

出　　处：《工程勘察》2012年第3期54-58,共5页Geotechnical Investigation & Surveying

基　　金：京沪高速铁路特大桥上CPⅢ点坐标多值性问题解决方案研究(2010G017-D-1)

摘　　要：本文通过回归分析方法成功建立了外界环境参数与大跨度钢桁梁大桥桥上CPⅢ控制点高程的多元线性回归预测模型,利用该模型可以获得满足桥上高速铁路轨道精调施工精度要求的CPⅢ控制点的实时高程,同时顾及了预测模型的时效性,提出实际使用该方法时应注意模型的"保质期"。This paper successfully establishes the multi-linear regression model among the environmental parameters and the height,with which the real-time height satisfying the precision requirements of track precision adjustment in high-speed railway construction is able to be obtained,and meanwhile,the recency,so-called the effectiveness for a recent period of time,of the model is included,and taking care of ＂the quality guarantee period＂ of the model when it is used.

关 键 词：回归分析 多值性 钢桁梁 高速铁路 

分 类 号：P221[天文地球—大地测量学与测量工程]