基于参照关系的既有线改建平面设计模型  

Horizontal Alignment Model for Existing Railway Reconstruction Based on Reference Relations

作　　者：李伟[1,2] 蒲浩[1,2] 

机构地区：[1]中南大学土木工程学院,长沙410075 [2]高速铁路建造技术国家工程实验室,长沙410075

出　　处：《高速铁路技术》2013年第5期46-50,共5页High Speed Railway Technology

基　　金：国家自然科学基金资助项目(51378512);交通运输建设科技项目(20113187851460)

摘　　要：针对既有线改建设计中线路关系复杂、计算繁琐等问题,提出了基于参照关系的既有线改建平面设计模型;将线路间各类复杂参照关系分为广义并行和广义绕行两大类;定义了6类基于参照关系的交点,并建立线路局部参照关系矩阵表示线路间的参照关系;研制了线路平面几何形位、线路里程与坐标间相互转换等算法,开发了既有线铁路改建设计数字选线系统,并在数十条既有线增改建设计中成功应用。应用结果表明,该模型可全面描述线路间的各类参照关系,进行全线贯通设计,无需分段处理,设计过程简单,可显著提高工效。Aiming to the complex reference relations and tedious calculation in existing railway reconstruction alignment design, a horizontal alignment model for existing railway reconstruction based on reference relations is put forwarded. Complex reference relations among alignments are divided into two types： generalized parallel and round. Six kinds of intersection points are defined and the alignment local reference relations matrix is built to indicate the complex reference relations among alignments. The algorithms for horizontal alignment geometrical position and mutual conversion between mileage and horizontal coordinate are worked out. Benefitted from that, the software for existing railway reconstruction a- lignment design is developed out, which has been applied to more than 10 railway alignment designs successfully. The application results verified that the model can describe all kinds of reference relations among alignments and can design by through mode instead of separate mode. The design procedure is simplified and working efficiency is significantly im- proved.

关 键 词：铁路选线 计算机辅助设计 既有线改建 参照关系 线形模型 

分 类 号：U212.33[交通运输工程—道路与铁道工程] TP319[自动化与计算机技术—计算机软件与理论]