基于组合赋权-二维云模型的铁路线路方案优选研究OA

In view of the limitations of the single-weight method of the route scheme selection and the problem of unilateral consideration of engineering construction results in the decision-making process,this paper proposes a route scheme evaluation method based on combination weighting method and two-dimensional cloud model.According to the example of route scheme selection in Tonghua section of Shenyang-Changbaishan Railway,17 factors affecting route direction are selected in 4 aspects of route design,natural and human landscape destruction,water and soil resources and environmental pollution,construction difficulty and safety as the guide for technical feasibility and ecological balance constructing the route scheme evaluation index system;then the combination of IGAHP and entropy power method is used to assign weights to determine the index weights and the engineering construction results and post-construction restoration cost as two sets of basic variables of the two-dimensional cloud.The use of MATLAB positive cloud generator can output evaluation cloud map and determine the membership grade of different route schemes.The results show that:the evaluated membership grade of the route scheme via Xinbin and Tonggang is between good and excellent,closer to good(grade Ⅱ),and the evaluated membership grade of the route scheme via Xinbin and Tonghua County West and the scheme via Huanren North and Tonghua County West is between average and general,closer to general(grade Ⅲ),recommending the scheme via Xinbin and Tonggang as the railway construction scheme,which is consistent with the actual engineering choice.