Abstract：Research purposes：Guangzhou Nansha port railway is a freight railway which start from Heshan Railway Station of Guangzhou—Zhuhai railway and end of the Guangzhou Nansha port．Because the control factors such as existing and planned expressway，existing and in the construction of the railway，high—voltage wire corridor，factories and mines，both the layout and planning of city，navigable river and SO Off spread all over the railway which has caused a great influence on the feasibility of railway line scheme and has seriously hindered construction progress of the project． This paper attempts to combine the construction reality of Guangzhou Nansha port railway by expanding the route scheme of route design and reasonably avoiding or treating along the control factors that in order to ensure the feasibility and rationality of the railway line scheme and vigorously promote the process of projeet construction and provides valuable experience for the construction of similar projects．
Research conclusions：(1)Comparison and selection of route scheme is an important content of design of railway line selection．When we conduct the comparison and selection of route scheme must synthetically considering the influencing factors such as project investment，difficulty of project implementation，project risk and local government opinion and SO on in order to make sure the selected line scheme optimal．(2)The analytic hierarchy process and muhi-objective decision-making model can effectively assist making decision for comparison and selection of route scheme．(3)In this paper，the study on the design of line selection of route scheme basing on Guangzhou Nansha port railway has comprehensively discusses the ideas and methods of comparison and selection of route scheme that has the typical scientific rationality and could provide reference and application for similar program．
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2013, Vol. 30 
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