中文摘要：

随机用户均衡交通分配模型统一了随机分配和Wardrop均衡的概念，可以获得更加符合实际的交通流分配结果．但传统的随机用户均衡模型既没有考虑弹性需求，也没有考虑出行者的社会经济特性．利用路网均衡建模理论构建了多用户类弹性需求随机用户均衡交通分配模型，证明了模型解的等价性和唯一性．基于无环简单路径搜索方法，设计了模型求解算法，并进行了算例计算与分析．

英文摘要：

Based on the network equilibrium modeling approach, a stochastic user equilibrium model with multiple classes and variable demand is established in this paper. The equivalence and uniqueness of the equivalent mathematic planning model is also proved. A correspondent algorithm is designed for the model with the searching technique of routes and computation is carried out by the algorithm.