地铁全线管片姿态复核数据处理方法研究

采用盾构法进行地铁隧道开挖时,盾构区间开挖后主要通过测量得到的管片环中心坐标进行反算获取对应环中心的里程及偏移值。针对于地铁全线多个盾构区间同时施工、复核数据处理量大且数据计算精度要求高的实际情况,本文论述了在地铁全线测量点坐标进行统一反算过程中,如何进行测量点反算时曲线要素的选择及对线元的判断,并结合地铁线路设计特征提出了一种缓和曲线部分任意点坐标反算里程的方法,并验证了该方法的可行性。

Research on the Data Processing Method of Segment Attitude Re-measurement of all Subway Segments

Shield tunneling method is adopted for subway tunneling.After the tunneling of shield tunneling section,the mileage and offset values of the corresponding ring center are obtained by the inverse calculation of the measured center coordinates of pipe segments and rings.Multiple shield tunneling sections are constructed simultaneously across the subway line,which requires large amount of data processing and high accuracy of data calculation.In subway engineering according to the actual situation,this paper discusses the subway all measurement point coordinates calculated by unified process,how to do when the selection of curve elements and inverse calculation of measurement point on the line element of judgment,and put forward a combined with the feature of subway line design part easement curve method of inverse calculation of arbitrary point coordinates mileage,and verify the feasibility of the method.