With the route scheme for Zhenning-Shitun Section of Huangtong-Baise Railway as a case for study,three methodologies were used for selecting the optimal route in the paper.At first,the traditional design method was used to compare the high and low station positions for Ziyun Station from multiple aspects such as engineering and economic conditions,to determine the controlling factors.Then,the geological conditions of the two positions were compared by using optimal path technology in ArcGIS software with the established optimal route analysis model for geological conditions.Finally,the Analytic Hierarchy Process(AHP)method was employed to integrate qualitative and quantitative indicators and build an AHP model for calculating a composite evaluation indicator of the two positions.The results show that the recommended schemes determined by the three methodologies are identical.The route selection methods based on ArcGIS software and AHP can objectively and comprehensively consider the impact of multiple factors on railway alignment,and have certain reference values for route scheme design.
route selection for railwayscheme optimizationoptimal pathAnalytic Hierarchy Process
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