Fine Alignment for Parallel Sections of New High Speed Railways and Existing Lines
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.
railway alignment selectionparallel to existing railwaysdynamic programmingfine designland use area
万方数据
维普
