高速铁路CPI控制网复测数据处理分析与研究

Analysis and Research on Re-surveying of CPI Control Network Data Processing in High Speed Railway

文章以贵阳至广州铁路土建GGTJ-2标平面CPI控制网复测数据为基础,介绍了高速铁路CPI控制网复测数据的处理方法,通过高精度解算和平差处理,获得各CPI点的三维约束平差坐标,然后转换至相应工程独立坐标系统中,求出相应的二维坐标,与设计成果进行比较;根据规范要求得出相应点位的坐标差和相邻点间坐标差之差的相对精度两项参数,然后对复测控制点位进行稳定性分析,并对超限点位如何处理进行了探讨。根据分析和处理结果得出复测结论与成果使用说明,确保平面CPI控制网复测精度和质量,对以后类似工程项目具有非常重要的参考价值。

Based on the data from Guiyang to Guangzhou railway construction GGTJ-2 control network, the article introduces the data processing method of CPI control network, obtains the 3D coordinates of each CPI points by high precision calculating, obtains three-dimensional points about various CPI by constrained adjustment the coordinates, and then converted to the corresponding engineering independent coordinate system, which finds the corresponding two-dimensional coordinates, and compared; drawn between the coordinates of the corresponding point coordinate difference and the difference between adjacent points difference according to regulatory requirements relative accuracy two parameters, and then discussed the stability analysis, and how to handle overrun points. The conclusions and results of the retest instructions can be used to ensure that the plane CPI Control Network retest the accuracy and quality similar project of future has a very important reference value according to the analysis and processing results.