高速铁路轨道控制网精密测量数据处理
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摘要
高速铁路无砟轨道施工建设需要布设高精度的轨道控制网(CPIII),要求相邻点平面相对精度优于1mm,同精度复测较差优于3mm。本文针对轨道控制网测量工程的特点,提出一种适合轨道控制网精密测量数据的处理方法,并采用国内某客专的实测数据进行了分析验证。实验结果表明,采用本文提出的方法能有效提高轨道控制网的平差精度、可靠性和计算效能。
Construction of the ballastless track of high-speed railway demands control network III(CPIII) for high-precise survey and control with a relative accuracy not larger than one millimeter among neighboring points and a re-measuring accuracy not larger than three millimeters.It is essential to do some researches on data processing approach in the precise surveying because the existing data processing approaches cannot satisfy the surveying coordinates and accuracy of this large-scale and high-precise construct control network with the high smooth of track.Based on the characteristics of CPIII survey engineering,an approach that is appropriate for the precise surveying of control network for ballastless track was proposed in this paper,whereafter an experiment was carried out to analyze and prove the correctness of the proposed approach with the real data collected in some high-speed railway of China.The results showed that the proposed approach could effectively enhance the accuracy,reliability and computing efficiency of the adjustment of control network for ballastless track of high-speed railway.
Construction of the ballastless track of high-speed railway demands control network III(CPIII) for high-precise survey and control with a relative accuracy not larger than one millimeter among neighboring points and a re-measuring accuracy not larger than three millimeters.It is essential to do some researches on data processing approach in the precise surveying because the existing data processing approaches cannot satisfy the surveying coordinates and accuracy of this large-scale and high-precise construct control network with the high smooth of track.Based on the characteristics of CPIII survey engineering,an approach that is appropriate for the precise surveying of control network for ballastless track was proposed in this paper,whereafter an experiment was carried out to analyze and prove the correctness of the proposed approach with the real data collected in some high-speed railway of China.The results showed that the proposed approach could effectively enhance the accuracy,reliability and computing efficiency of the adjustment of control network for ballastless track of high-speed railway.
引文
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[11]TB10601-2009.高速铁路工程测量规范[S].2009年12月1日实施.
[2]陶本藻.自由网平差与变形分析[M].武汉:武汉测绘科技大学出版社,2000.
[3]於宗俦,李明峰.多维粗差的同时定位与定值[J].武汉测绘科技大学学报,1996,21(4).
[4]於宗俦,李明峰.对LEGE法性质的进一步讨论及其改进搜索方法[J].武汉测绘科技大学学报,1998,23(3).
[5]崔希璋,等.广义测量平差(新版)[M].武汉:武汉大学出版社,2001.
[6]于正林.边角网平差中的方差分量估计[J].地壳形变与地震,1988,8(2).
[7]宋力杰,欧阳桂崇.超大规模大地网分区平差快速解算方法[J].测绘学报,2003,32(3).
[8]GB50026-2007.工程测量规范[S].2008年5月1日实施.
[9]杭芬,岑敏仪,等.无砟轨道基桩控制网测量技术探讨[J].测绘科学,2010,35(1).
[10]武汉大学测绘学院测量平差学科组.误差理论与测量平差基础[M].武汉:武汉大学出版社,2003.
[11]TB10601-2009.高速铁路工程测量规范[S].2009年12月1日实施.
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