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在线路平面已定的条件下,不同的变坡点位置和不同的设计高程决定了不同的纵断面设计方案。线路纵断面优化设计就是从众多的设计方案中确定一组最佳的变坡点位置和设计高程,并在满足《铁路线路设计规范》及其它技术经济要求的前提下,使线路纵断面设计最优化。
Under the condition that the line plane has been set, different slope changing points and different design elevations determine different design schemes of the longitudinal section. Line longitudinal section optimization design is determined from a number of design options to determine the best position and design elevation of the slope, and to meet the “Railway Design Code” and other technical and economic requirements of the premise, the design of the line profile optimization.