In urban areas with limited land and high demolition costs,when new railways share stations and corridors with existing railways,the difficulty of line design is greatly increased.In response to this issue,this article proposed a method for fine optimization design of railway lines based on manual line schemes.By improving the existing dynamic programming algorithm,the alignment parameters of the horizontal and vertical sections of the line were finely adjusted,with the total cost of the line engineering as the objective function,and the global optimal solution was obtained under specific constraints,search range,and accuracy conditions.Finally,the proposed alignment optimization model framework was applied to a section of a high speed railway project in Shandong Province.The results show that this optimization method can effectively optimize the alignment parameters of railway design,reducing the area of house demolition and the land area between new and existing lines by 4.61%and 3.39%,respectively,and saving 2.75%of the total project cost.
关键词
铁路选线/既有线并行/动态规划/精细化设计/用地面积
Key words
railway alignment selection/parallel to existing railways/dynamic programming/fine design/land use area
维普
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