地铁铺轨控制基标精准测设及归化调整方法研究

Research on Method of Precision Layout and Naturalization Adjustment for Subway Track-laying Control Benchmark

为提高铺轨控制基标测设精准度和归化调整效率,该文首先结合多点沉降监测几何水准测量方法,对铺轨控制基标的高程进行了精确测设;然后采用了类似后验方差理论控制边角的方法,对控制基标平面的坐标进行了精确测设。此外,针对在曲线段上所测设的控制基标较难达到规范要求和效率低下的问题,提出了利用现场观测推算线路横向偏差值的计算公式,提高了归化调整测量的效率。最后,以实例验证了该方法的实用性。

In order to improve the accuracy of track-laying control benchmark and efficiency of naturalization adjustment,firstly,combined with the geometric leveling method of multi-point settlement monitoring,the elevation of track-laying control benchmark is measured accurately in this paper. Then the coordinates of the control base plane are accurately measured by using the method of controlling the edge angle similar to posterior variance theory. In addition,according to the problem that it is difficult to meet the standard requirement and low efficiency of the control base standard on the curve,a formula for calculating the lateral deviation of the line by using the field observation is proposed,which improves the efficiency of naturalization adjustment survey. Finally,an example is given to illustrate the practicability of the method.