Abstract:Research purposes: In comparison and selection of overseas railway alignment, due to the private ownership of land, difficulties in land acquisition and demolition, high environmental protection requirements and other constraints, meanwhile, different demands of stakeholders such as government departments and social organizations, the difficulties in comparison and selection of railway alignment are increased. How to choose the alignment reasonably, balance the demands of all stakeholders as far as possible, and maximize the group interests has become a big problem in overseas railway alignment selection. Research conclusions: (1) According to the characteristics of overseas projects, a multi-objective decision-making model is established based on following evaluation aspects: technical benefit, economic benefit, environmental benefit, social benefit and project executable benefit. (2) The multi-criteria compromise ranking method is proposed to calculate the model, and priority and ranking of alignment options are obtained by the comparison. (3) The method is verified by a case study. This method has the characteristics of simple principle, stable results and high resolution, and has a certain application prospect in the research of overseas railway alignment selection.
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