【摘要】 讨论的城市交通体系模型由快速道路网和广布的街区道路连续区域组成 .针对这样特征的城市交通体系 ,建立了满足弹性需求及用户平衡条件的数学规划模型 ,并提出了以有限元算法为基础的迭代求解方法 .最后 ,给出了城市交通体系模型的算例 ,证明了模型和算法的有效性更多还原

【Abstract】 This paper considers a city with a mixed transportation system that consists of a discrete freeway network and a two-dimensional continuum of dense surface streets.An optimization mathematical model is formulated and proved to satisfy the elastic demand and user equilibrium condition.An iterative solution based on finite element algorithm is developed to solve the equivalent model.A numerical sample is given to illustrate the effectiveness of the proposed method.更多还原