基于约束线路群的铁路枢纽数字化关联选线方法

摘要

针对枢纽区域线路种类和数目繁多、线路间约束关系复杂的特点,提出一种关联选线设计方法.首先,分析并总结线路间各种参照关系,建立线路参照关系矩阵和交点信息矩阵,基于两矩阵构建复合参照线型模型；然后,将线路间的约束关系分为引出、接入、参照、最小线间距和交叉约束,并给出相应的表达式；在此基础上,设计线路关联图的数据结构,将各线路的几何属性及相互间的约束关系集成为整体,从而建立枢纽约束线路群,并研制枢纽约束线路群的构建与关联选线的实现算法；最后,基于上述方法,开发枢纽选线系统,并在多个铁路枢纽选线中应用.研究结果表明:枢纽中各线路均可贯通设计,几何线位里程及约束关系可自动实时动态解算,显著提高工效.%Based on the fact that railway terminal routes are various and numerous,and the constraint relationships among them are complex,a relational location method was put forward.Firstly,various reference relationships among the routes were analyzed and summarized.The routes reference relationships matrix and intersection points (IPs) matrix were proposed.Based on the two matrixes,the composite reference alignment model was built.Secondly,the constraint relationships among the routes were classified as outgoing,incoming,reference,minimum line space and intersection.The corresponding formulations were given.The relational graph data structure of routes was designed.All the routes geometry properties and constraint relationships were integrated,and the constraint routes group was built.The creating algorithm for constraint routes group and the relational location algorithm were worked out.Finally,a railway terminal digital location system was developed,which was applied in many railway terminal locations.The results show that all kinds of routes in railway terminal can be designed,and spatial positions,mileages and constraint relationships can be worked out real-timely and automatically,the work efficiency is improved significantly.