高速铁路平面控制网更新方法的研究与应用

Research and application of renewal method of high speed railway horizontal control network

针对运营期高速铁路基础平面控制网(CPI)存在连续多个点位更新,造成高铁线上加密CPII也随之大量更新的问题,提出了一种基于稳定的CPI、加密线路平面控制网(CPII)为约束点更新CPI点问题的新方法.工程应用表明提出的新方法在更新补设的CPI点能更好的与运营期高铁现状相符,并能降低高铁路线上加密CPII的更新率.通过与传统方法进行比对,结果表明:提出的新方法在计算加密CPII时更新率时降低了7.3%,验证了该算法在运营高铁加密CPII更新计算时具有较大的应用价值.

According to the problem that the basic horizontal control network(CPI)of high-speed railway is updated continuously at multiple points during the operation period,resulting in a large number of updates of encrypted route horizontal control network(CPII)on high-speed railway line,a new method of updating CPI points based on stable CPI and encrypted CPII as constraint points is proposed.The engineering application shows that the proposed new method can better match the current situation of high-speed railway in the operation period,and reduce the renewal rate of encrypted CPII on the high-speed railway line;compared with the traditional methods,the results show that the update rate of the proposed new method is reduced by 7.3%,which verifies that the algorithm has great application value in the update calculation of encrypted CPII of high-speed railway.