基于引力模型的中小型城市铁路客运站选址研究

Research on Location Selection of Passenger Stations in Small and Medium-sized Cities Based on Gravity Model

中小城市铁路客运站在服务对象、范围及客运流量等方面均与大型铁路客运站有所不同,针对中小城市铁路客运站选址布局的特殊性,建立最大系统引力和最小系统费用的双目标优化模型。在模型的优化求解上,首先运用线性规划法求出系统引力和系统费用最优值,其次建立方案评价模型,引入偏差值为约束,得到合理的最优选址方案和客流集散点分配方案。最后设计相应的算例,验证了模型具有实用性和有效性。

Small and medium-sized city passenger stations are different from large-scale passenger stations in terms of service objects,scope and passenger traffic.Therefore,it is necessary to re-examine their site selection studies.Aiming at the particularity of the site layout of small and medium-sized passenger transport stations,this paper establishes a dual-objective optimization model of maximum systematic gravity and minimum systematic cost.So,in the optimization of the model,the linear programming method is used to obtain the optimal value of the systematic gravity and systematic cost.Secondly,the scheme evaluation model is established,and the deviation value is introduced into the constraint.At last,the reasonable optimal location scheme and the passenger flow distribution point allocation scheme are obtained.Finally,the corresponding examples are designed to verify the practicability and effectiveness of the model.