地铁线路纵断面优化系统设计与实现

Design and implementation of optimized system for vertical alignment of metro track

针对线路纵断面设计复杂、耗时长的特点,提出一种地铁线路纵断面优化系统,在给定平面设计方案的前提下可自动高效设计高质量的线路纵断面。系统允许对线路平面方案与车辆数据进行编辑,通过构建列车运行仿真模型和线路纵断面自动优化模型,设计改进的遗传算法自动求解满足设计规范要求、工程约束的地铁线路纵断面方案,节约全生命周期的建设成本和列车能耗成本。同时,系统允许对自动求解得到的纵断面方案进行手动调整,并自动验算调整后的方案是否满足相关规范。广州地铁2号线案例表明,相较实际纵断面方案,系统优化方案在保持建设成本不变的同时节约列车运行能耗3.2%,有利于降低全生命周期成本。

The design of the vertical alignment of metro tracks(VAMTs)is complex and time-consuming.To address this issue,an optimization system is developed for VAMTs.This system automatically and efficiently designs optimized VAMTs for a given horizontal alignment of metro tracks.The proposed system allows editing the track alignment and cars data,and proposes a train operation-based simulation model on train operation and an optimization model on the VAMT for minimizing the life-cycle cost and energy consumption of metro cars.The system allows manual adjustment of the vertical alignment of metro track plan obtained by the automatic solution,and automatically checks whether the adjusted plan meets the relevant specifications.A study case involving Guangzhou Metro Line 2 shows that the optimized VAMT reduces energy consumption by 3.2%relative to the actual VAMT for the same construction cost,indicating that the optimized VAMT can save life-cycle costs.