城市交通混合流非饱和状态下阻抗函数研究  

Research on Impedance Function of Unsaturated Urban Mixed Traffic

作　　者：查伟雄[1] 王世彬[1] 

机构地区：[1]华东交通大学交通运输与经济研究所,江西南昌330013

出　　处：《公路交通科技》2010年第9期100-104,共5页Journal of Highway and Transportation Research and Development

基　　金：江西省自然科学基金项目(0611022);江西省教育厅重点科技项目(GJJ08235)

摘　　要：从出行者的出行需求出发,在不考虑市内收费站存在的情况下,针对不同道路条件下不同流量之间相互影响的因素,构建路段阻抗函数。在此基础上,对交叉口进口道非饱和状态下的延误进行分析,构造了城市交通混合流非饱和状态下的节点阻抗函数,采用最大似然法对参数进行标定。最后通过简单算例来验证新的综合交通阻抗函数在城市动态交通分配过程中具有一定的科学性与合理性。For travelers＇ travel needs, the link impedance function was built considering influencing factors of traffic flows under different road conditions but without considering the existence of toll stations. On this basis, the delay of unsaturated traffic at approach of intersection was analysed, the node impedance function of unsaturated urban mixed traffic was built, and the parameters were calibrated by using maximum likelihood calibration method. Finally, the scientificalness and rationality of the new integrated impedance function in urban dynamic traffic assignment process were verified through a simple example.

关 键 词：交通工程 阻抗函数 极大似然 非饱和交通流 交通分配 

分 类 号：U491[交通运输工程—交通运输规划与管理]