免棱镜全站仪悬高测量法测定拱圈线形

Surveying the Shape of Arch Ring by Reflectorless Total Station Remote Elevation Measurement

针对拱圈线形测量的难题,提出了一种利用免棱镜全站仪结合悬高测量原理测定拱圈线形的方法,并推导了Z坐标测量中误差的计算公式,讨论了影响测量精度的主要因素。理论分析和工程实例表明,该方法具有观测精度高,操作简便,适应性强等优点,是拱圈线形测量的一种较好方法。

In connection with the problem of the shape measurement of arch ring,a new method was presented that measuring the arch ring by reflectorless total station remote elevation measurement.Then the mean square error formulas of Z coordinates was derived and the main impact factors of measurement accuracy were discussed.The theoretical analysis and engineering example show that it is a good method for the shape measurement of arch ring due to its unique advantages,such as high measurement accuracy,simple operation and good adaptability.