| 运营高铁线路平面控制网复测更新指标研究 |
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| 作者姓名： | 李京强 张献州 陈旭升 蒋英豪 谭社会 |
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| 作者单位： | 西南交通大学地球科学与环境工程学院 ,四川 成都 ,610031;中国铁路上海局集团有限公司工务处 ,上海 ,200071 |
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| 基金项目： | 2016-2019年上海局运营高铁精测网复测与基础变形监测咨询评估项目(LR01HX1135Y16035)。 |
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| 摘 要： | 基于现有的运营高铁线路平面控制网(route horizontal control network,CPⅡ)复测成果更新的双限差法,针对坐标较差与相邻点坐标差之差的相对精度超限严重不匹配的情况,提出改进多限差综合分析判定法进行CPⅡ网复测成果的更新综合分析。结合秩亏自由网平差及尺度变化参数对改进多限差综合分析判定法再分析进行验证,在成果更新上比双限差法更为科学合理,可为运营高铁精测网复测工作提供一定参考。
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| 关 键 词： | 运营高铁 复测成果更新 改进多限差法 相对精度 横向偏差 |
Research on Route Horizontal Control Network Retesting Update Index of High-Speed Railways |
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| Authors: | LI Jingqiang ZHANG Xianzhou CHEN Xusheng JIANG Yinghao TAN Shehui |
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| Institution: | (Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu 610031,China;Maintenance Department,China Railway Shanghai Group Co.,Ltd.,Shanghai 200071,China) |
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| Abstract: | Based on the existing double-limit method of the route horizontal control network(CPII)retesting results update,for the case where the relative accuracy of the difference between the coordinate difference and the adjacent point coordinate difference is seriously mismatched,this paper propose an improved multi-limit comprehensive analysis and determination method to update analysis the renwal of CPII retest results.Combined with the example of rank-deficient free network adjustment and scale change parameters,the improved three-limit difference method is validated.It is proved that the Improved multi-limit comprehensive analysis and determination method is more scientific and reasonable than the double-limit method in the analysis of results update.The retesting work provides a certain reference. |
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| Keywords: | operating high-speed railway repetitive survey results update improved multi-limit method relative accuracy lateral deviation |
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