铁路三维空间智能选线研究及开发  

Research and Development of Three-dimensional Spatial Intelligent Line Selection for Railway

作　　者：龙喜安[1,2] 蒲浩[1,2] 胡建平[3] 孟存喜[4] 杨新林[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 [3]中铁二院工程集团有限责任公司,成都610031 [4]中铁第一勘察设计院集团有限公司,西安710043

出　　处：《高速铁路技术》2013年第6期1-8,13,共9页High Speed Railway Technology

摘　　要：文章提出了一种基于遗传算法的铁路三维空间智能选线方法。建立铁路三维空间信息模型,为指定区域内铁路空间线位的智能搜索提供了基础信息条件;以铁路空间线位几何参数作为设计变量,充分考虑线路几何约束与环境影响约束作用,建立以最小综合代价为目标函数的多目标数学优化模型;应用基因浮点编码方式,提出以交点偏移距、链式变坡点标高作为基因的三维空间编码方法,设计了适应于铁路三维空间线形整体优化的遗传算子,对三维空间线路进行全局搜索与多目标寻优,合理控制线路方案的取舍,保持线路方案群的多样性。基于本研究所提出的理论和方法,开发了铁路三维空间智能选线系统,测试结果表明,搜索出的线路方案经济合理,验证了铁路三维空间智能优化算法的合理性与实用性。A three-dimensional spatial intelligent approach for railway alignment optimization was developed, which xs based on genetic algorithms. The 3D spatial information model for railway alignment was built to provide basic information in assigned region for intelligent searching of the railway spatial alignment. The geometric parameters of railway spatial alignment were taken as the design variables, and the geometric constraint and environmental impact constraint of railway line were fully considered for establishment of the multi-objetive mathematical optimization model, with the minimum integrate-cost of railway as the objective. A genetic real encoding method was devised, which took the cutting distance of intersection point and the elevation of chain-linked fold lines as its gene series. The genetic operator which adapted to the whole optimization of the railway spatial alignment was designed. The global search and multi-objective optimization for the railway three-dimensional spatial alignment were conducted, controlling the choices of line scheme reasonably and maintaining the diversity of the scenarios. Based on the theories and methodology reviewed in this paper, a three-dimensional spatial intelligent route selection system was developed and had been widely applied to many railway projects. The scenarios also showed that the railway scheme searched was economic and reasonable, and that the rationality and practicability of the 3D spatial intelligent optimization algorithm was verified.

关 键 词：智能选线 遗传算法 空间信息模型 多目标优化模型 三维整体优化 铁路选线 

分 类 号：U212.32[交通运输工程—道路与铁道工程]