铁路工程轨道精调现状及改进方法研究

Research on the Present Situation and Improvement Method for Precise Adjustment of Railway Tracks

研究目的:现有轨道精测精调存在难以有效改善中长波幅值及多波不平顺控制的困难,本文从我国铁路轨道精调作业现状及轨道不平顺的变化特性出发,通过分析轨向检测原理及改进方法,研究一种基于垂线偏距法的轨道检测及精调的改进作业方法,以达到综合提高铁路工务轨道精调平顺性的目的。研究结论:(1)基于垂线偏距法定向的检测方式可有效降低轨道中长波不平顺幅值,合理安排作业工序,可在轨向/高低优化改进的前提下,进一步改善其他轨道几何不平顺短波幅值及多波不平顺,整体提高轨道平顺性状态;(2)在轨道状态不良及缓和曲线等区段,轨道检查仪测量的垂线偏距误差会偏大;(3)基于车体敏感波长进行定制化的精调作业,可进一步提高运营动力作用稳定性。

Research purposes:It’s difficult to effectively improve the amplitude of medium and long waves and control multi-wave irregularities with the existing track precision measurement and fine adjustment methods.Based on the current situation of railway precise adjustment in China and the variation characteristics of track irregularities,by analyzing the principle and improvement method of orbit detection,this paper studied on an improved operation method of track detection and fine adjustment based on the vertical deviation,in order to achieve the purpose of comprehensively improving the smoothness of railway works track fine adjustment.Research conclusions:(1)The detection method based on the vertical deviation method can effectively reduce the amplitude of the long-wave irregularity in the track,and reasonably arrange the operation procedures,which can further improve short-wave amplitude and continuous track irregularities,and improve the track smoothness as a whole on the premise of orbit orientation/height optimization and improvement.(2)In the section of poor track condition and easing curve,the vertical deviation error measured by the inspecting instrument for railway track will be too large.(3)The customized adjustment of railway tracks based on the sensitive wavelength of the vehicle body can further improve the stability of the operation dynamic effect.