绝对测量在无砟轨道的轨向控制中的精度分析

研究目的:目前,我国高速铁路无砟轨道的精调主要是基于全站仪的绝对测量精调模式,其是以外部几何状态来控制内部几何状态,该方法与轨道平顺性的概念并不完全兼容。本文从绝对测量精调技术的误差分析出发,分析在轨道平顺性模型中该精调模式的控制精度。研究结论:通过理论分析及实验数据表明,配以高精度全站仪,绝对测量模式能够保证高速铁路±2 mm的平面控制精度要求。

Analysis of Accuracy of Absolute Survey in Control of Horizontal Regularity of Ballastless Track

Research purposes: At present,the absolute survey method of the electronic total station(ETS) is used for the precision adjustment of the ballastless track regularities.With this method,by surveying the external geometric state,the internal geometric state is controlled,but it is not fully compatible with the traditional concept of track irregularities.In this paper,the discussion is made on the error of absolute survey and the analysis is made for the control precision of this precision adjustment of the ballastless track irregularity. Research conclusions:The theoretical analysis and relevant experiments proved that using the adjustment method of absolute survey with high accuracy ETS could meet the accuracy requirements of within ±2 mm for the horizontal irregularity adjustment of the ballastless track of high-speed railway.