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- 2016
一种铁路既有线纵断面圆曲线拟合新方法
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Abstract:
为保持或提高轨道的平顺性，需要经常对轨道进行整正。纵断面线形拟合是铁路既有线纵断面整正的关键步骤，纵断面拟合线形决定了轨道纵断面调整的合理性。圆曲线拟合是铁路既有线纵断面拟合的重要组成部分，铁路纵断面上的圆曲线具有弧长短、半径大的特点，难以拟合出准确的、符合铁路纵断面线形特点的圆曲线参数。针对上述问题，结合铁路纵断面圆曲线圆心在与其相邻的直线坡段所夹的内角平分线上和圆心到相邻直线坡段的距离等于圆曲线半径的特点，提出了一种适用于铁路纵断面圆曲线拟合的方法。该方法具有拟合参数少、拟合准确度高的特点，且所得圆曲线参数符合铁路纵断面线形特点，可为铁路既有线纵断面圆曲线拟合提供参考
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