给定周期条件下环型交叉口优化控制方法研究  

Optimization of Control Method for Roundabout at Fixed Cycle

作　　者：薛昆[1] 杨晓光[1] 白玉[1] 

机构地区：[1]同济大学道路与交通工程教育部重点实验室,上海200092

出　　处：《公路交通科技》2004年第5期83-87,共5页Journal of Highway and Transportation Research and Development

基　　金：国家自然科学基金资助项目(70122201 G0114);国家重点基础研究发展规划"973"资助项目(G1998030408)

摘　　要：环形交叉口左转二次控制理论自提出以来,在国内得到了一定的应用,同时也暴露出诸多问题,如原对称式控制方法易导致饱和度不均衡、部分进口绿灯时间利用不充分等。本文在环形交叉口左转二次控制理论的基础上,针对环型交叉口各流向的不对称性,以环型交叉口各流向饱和度均衡为优化目标,提出了基于非对称性的环型交叉口优化控制方法。并以各进口道饱和度方差为评价指标,对该优化方法进行评价。文章的最后,以该方法在厦门市的实际应用为例,说明该方法的正确性及实用价值。The Left-turn with two stops control method has been applied in some cities in China with some benefits.However,it still has some problems,such as the disequilibrium of saturation-degree caused by symmetrical control method and the low using rate of the green time.In this paper,the optimization of control method based on the dissymmetry of roundabout at coordinated control system is put forward.This new method,which is based on the Left-turn with two stops control method,takes the equilibrium of saturation-degree as a target and optimize the control method of roundabout.By using the square deviation of the saturation-degree of the roundabout,this new method is evaluated.A practical application in a roundabout in Xiamen is proposed to verify the feasibility and practicability of this optimum control method.

关 键 词：环型交叉口 优化控制方法 饱和度 非对称性 均衡 

分 类 号：U491.54[交通运输工程—交通运输规划与管理]