摘要
为避免无砟轨道精调对外部几何参数测量的过度依赖,提出了一种基于轨道不平顺的精调量计算方法.该方法通过对轨道检查仪的惯性轨迹建立轨道不平顺的向量模型,构造了以恢复平顺性为目标的无砟轨道精调量的逐次超松弛迭代算法,并分析了算法的收敛性和收敛速度.提出的方法已在某高速铁路精调作业中规模试用,并通过动态检查验证了方法的有效性.研究表明:该方法具有收敛性,对轨道惯性轨迹进行有限次迭代即可获得满足平顺性要求的精调量;动态检查结果轨道质量指数为2.26,与绝对测量作业效果相当.
To avoid the over-reliance on measuring track outer geometry for ballastless track fine adjustment, a computing method of track realignment on the basis of track irregularities was proposed. Through establishing the vector models of track irregularities based on the inertia trajectory of track inspecting instrument, a successive over-relaxation iteration algorithm was constructed for the numerical solution of realignment value, and its convergence and its convergence rate were analyzed. The proposed method has been applied to the fine adjustment of ballastless track in certain high-speed railway to prove its effectiveness by kinematical survey. The research indicates that the computing method is convergent, and after finite iteration, the realignment value to meet the requirements of track irregularities can be obtained. The track quality index obtained by the kinematical survey is 2.26, being comparable to absolute adjustment.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2015年第1期131-136,共6页
Journal of Southwest Jiaotong University
基金
国家自然科学基金资助项目(51468042)
江西省自然科学基金资助项目(20142BAB206003)
江西省科技支撑计划资助项目(20132BBE50036)
关键词
高速铁路无砟轨道
轨道整正
平顺性
中点弦测模型
迭代算法
HSR （high-speed railway） ballastless track
track adjustment
irregularity
MCO （mid-chord offset） model
iterative algorithm
