高速铁路轨道控制网精密测量数据处理

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。

Data processing in precise surveying 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.