| 可直接计算转向流量的改进型DIAL交通分配算法 |
| |
| 引用本文： | 任刚,王炜. 可直接计算转向流量的改进型DIAL交通分配算法[J]. 中国公路学报, 2005, 18(4): 83-86 |
| |
| 作者姓名： | 任刚 王炜 |
| |
| 作者单位： | 东南大学,交通规划与管理江苏省重点实验室,江苏,南京,210096 |
| |
| 基金项目： | 国家自然科学基金项目(50378016) |
| |
| 摘 要： | 为了在交通分配中直接计算转向流量而不是通过事后推算获取,利用转向—路段拓扑关系及其衍生路段上流量守恒的规律,对Logit交通分配中最常用的DIAL算法进行改进。改进后的DIAL算法既继承了原算法的基本结构和全部优点,又可在得到路段流量的同时直接计算转向流量,且能避免传统的FURNESS、FRATOR等事后推算模型在进行路段流量至转向流量迭代推算时的过大计算量及其他缺点。最后通过一个经典算例验证了该算法的有效性。
|
| 关 键 词： | 交通工程 转向流量 改进的DIAL算法 路段流量守恒 交通分配 |
| 文章编号： | 1001-7372（2005）04-0083-04 |
| 收稿时间： | 2004-11-06 |
| 修稿时间： | 2004-11-06 |
Improved DIAL''''s traffic assignment algorithm for directly computation on turning flows |
| |
| REN Gang,WANG Wei. Improved DIAL''''s traffic assignment algorithm for directly computation on turning flows[J]. China Journal of Highway and Transport, 2005, 18(4): 83-86 |
| |
| Authors: | REN Gang WANG Wei |
| |
| Affiliation: | Key Laboratory of Transportation Planning and Management of Jiangsu Province, Southeast University, Nanjing 210096, China |
| |
| Abstract: | To directly compute turning flows instead of estimating them from link flows in traffic assignment,authors improved DIAL's algorithm which was the most popular algorithm for logit traffic assignment,utilizing the turn-link incidence relationship and the conservation of flow on links.While inheriting the basic structure and all advantages of the original one,the improved algorithm directly computed turning flows as well as link flows,and it avoided abundant computation and other shortcomings of those methods of FURNESS's model and FRATOR's model,which estimated turning flows iteratively from link flows after traffic assignment.The improved algorithm was validated by a classical numerical example. |
| |
| Keywords: | traffic engineering turning flow improved DIAL's algorithm conservation of flow on link traffic assignment |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
