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针对传统方法进行既有铁路曲线整正测量精度低、效率低、安全性差,难以满足维修养护中大机作业要求的问题,提出了将现代测绘技术应用于既有线测量的方法。建立全线统一的三维控制网,并加大轨道控制网点位密度,有效地方便了线路中心坐标采集以及调线作业;采用了初拟合与调整、考虑调线控制关键点、进一步细化拟合与调整的平面曲线优化方法;创造性地采用非接触性测量方法,进行桥梁偏心的精确测定。所提方法应用于数条长大既有线路进行实践检验的结果表明,曲线整正测量精度明显提高,并在面对复杂曲线时也能较为快速地拟合出拔量最小的优化曲线,其在生产中切实可行,能够满足现代化既有线维修养护需要。
According to the traditional method, the existing railway curve alignment measurement accuracy is low, the efficiency is low, the safety is poor, and it is difficult to meet the requirements of large machine maintenance in maintenance. A method of applying modern mapping technology to existing line measurement is proposed. The establishment of a unified three-dimensional control network across the board and increase the bit density of the track control network effectively facilitate the collection of the center coordinates of the line and the trimming operation. The initial fitting and adjustment are adopted, the key points of the trimming control are considered, and the finer fitting And adjustment of the plane curve optimization methods; creative use of non-contact measurement methods for accurate determination of eccentric bridge. The results show that the proposed method is applied to the testing of several existing lines. The results show that the accuracy of curve alignment is obviously improved, and the curve of the minimum pull-out can be fitted more quickly in the face of complex curves Practical in production, to meet the modernization of existing line maintenance needs.