高速磁浮轨道功能件适用范围分析

Analysis of Application Scope of High-speed Maglev Track Functional Parts

研究目的:为探明高速磁浮轨道功能件拟合曲线线路时所产生轨道形位偏差的规律,指导高速磁浮轨道功能件的设计、选型,提升磁浮线路的拟合效果,满足高速磁浮线路高平顺性的要求,建立功能件拟合曲线线路的几何模型,探究不同曲线半径工况下功能件的功能面的位置、偏转值的理论偏差变化规律,提出功能件的适用范围。研究结论:(1)功能件在曲线段的拟合效果与功能件的长度、定子排列方式、导向面曲率半径、曲线线路参数有关;功能件长度越短、曲线半径越大拟合效果越好,定子径向(折曲)排列曲线拟合效果优于定子直线排列,带有曲率半径导向面对改善小半径平面曲线的拟合效果明显;(2)2.064 m、3.096 m、6.192 m长的定子直线(折曲)排列的功能件能够拟合的竖曲线半径应分别大于1900 m(950 m)、2800 m(950 m)、5700 m(1950 m),直线型、R=790 m和R=1550 m导向面的功能件,在平面曲线半径分别为∞、790 m、1550 m的线路上拟合效果最优;(3)本研究成果可为功能件的设计/选型、施工误差控制、优化功能件拟合磁浮线路的效果等提供参考。

Research purposes:In order to find out the law of track shape and position deviation caused by the fitting curve line of high-speed maglev track functional parts,guide the design and selection of high-speed maglev track functional parts,improve the fitting effect of maglev line,and meet the requirements of high smoothness of high-speed maglev line,the geometric model of the fitting curve line of the functional part is established,and the theoretical deviation variation law of the position and deflection value of the functional surface of the functional part under different curve radius conditions is explored,and the applicable scope of the functional part is proposed.Research conclusions:(1)The fitting effect of the functional part in the curve segment is related to the length of the functional part,the arrangement of the stator,the radius of curvature of the guide surface,and the curve line parameters.The shorter the length of the functional parts and the larger the radius of the curve,the better the fitting effect.The fitting effect of the stator radial(bending)arrangement curve is better than that of the stator straight line arrangement.The fitting effect of the small radius plane curve with the curvature radius guide surface is obvious.(2)The fitting vertical curve radius of 2.064 m,3.096 m,6.192 m long stator straight line(bending)arrangement function parts should be greater than 1900 m(950 m),2800 m(950 m),5700 m(1950 m)respectively.The fitting effect of linear,R=790 m and R=1550 m guide surface function parts is the best on the line with plane curve radius of∞,790 m and 1550 m respectively.(3)The research results have applicability in the design or selection of functional parts,construction error control,and optimization of the effect of functional parts fitting maglev lines.