城市轨道交通建设时序确定方法

Development of a Method for the Construction Schedule of Urban Rail Transit Lines

为科学合理地安排城市轨道交通线路的建设时序,提出了城市轨道交通建设时序TOPSIS模型。分析了城市轨道交通建设时序的6大影响因素,运用主观赋权法和客观赋权法相结合的思想,采用AHP与熵值法确定了轨道交通建设时序影响因素指标权重;构建了城市轨道交通建设时序决策矩阵,并采用极差变换法对其进行了标准化,结合影响指标权重,构建了加权标准化决策矩阵;运用TOPSIS方法,确定了城市轨道交通线路的正负理想建设时序方案,通过线路与负理想方案的贴近度确定城市轨道交通线路的建设时序。最后以西安市轨道交通为案例,验证了模型的可行性与有效性。结果表明,运用所提出模型计算的结果与实际建设次序一致,该模型有效可行,具有较好的应用前景。

In order to arrange the urban rail transit lines construction project reasonably, a model of the construction schedule of urban rail transit lines based on TOPSIS was proposed. Six influencing indexes of the construction schedule of urban rail transit were analyzed and the weights of that were determined by AHP and entropy using the idea of combining subjective and objective weighting methods. The decision matrix was build up and standardized by range transformation method. Also, the weighted standardized decision matrix was build up by combing the decision matrix and the indexes＇ weights. Using the TOPSIS model, the positive and negative ideals construction schedule of the urban rail transit lines was determined. And the construction schedule of urban rail transit lines were determined by calculating the close degree of the urban rail transit lines and the negative ideal construction schedule. Finally, a case of Xi＇ an rail transit was to verify the feasibility and effectiveness of the model. The result shows that the construction schedule of Xi＇an rail transit lines calcu- lated by the model is the same as the actual situation; the method is effective and feasible and has good application prospects.