考虑绿时损失均衡的公交优先交叉口配时优化  

Timing Optimization for Bus Priority Signalized Intersection Considering Green Loss Equilibrium

作　　者：胡兴华[1] 隆冰 朱晓宁[1] 

机构地区：[1]北京交通大学交通运输学院,北京100044 [2]重庆市交通规划研究院,重庆400000

出　　处：《公路交通科技》2016年第2期96-104,共9页Journal of Highway and Transportation Research and Development

基　　金：国家自然科学基金重大项目(71390332);国家自然科学基金项目(60870014);高等学校博士学科点专项科研基金项目(20130009110001)

摘　　要：为了均衡公交优先信号控制对交叉口延误的负面影响,基于延长绿灯时间、缩短红灯时间和插入优先相位策略,分别提出了3种优先策略的绿时损失均衡方法。采用延误叠加分析方法,考虑进口道车流累积疏散和停车起动过程,分析了相位绿时左端和右端时长变化产生的延误增减,构建了交叉口损失均衡下的延误计算模型。以交叉口减少人均总延误最大为目标函数,以其余相位车辆正常通行为约束条件,建立了考虑绿时损失均衡的公交优先配时优化模型,对各相位绿时均衡参数进行优化,并基于Frank-Wolfe算法,利用对角化技术设计了求解算法。结果表明:新的延误计算方法可更加准确地描述公交优先信号交叉口的延误变化;配时优化模型可有效地均衡各非优先相位的绿时损失,降低交叉口人的总延误。For balancing the negative effect of intersection delay caused by bus priority signal control,3 kinds of green loss equilibrium methods for bus priority strategy are proposed based on green extension,red truncation and phase insertion respectively. By using the method of delay overlay analysis,considering the process of vehicles accumulation,evacuation,stopping and starting in the intersection entrance lane,the delay increase or decrease caused by length variation at left and right ends of the green phase is analysed,and a model of calculating delay under green loss equilibrium is established. Taking maximizing the reduction of total average delay at intersection as the objective function which is subject to the status of vehicles at rest phases may normally move,a bus priority optimal timing model is established to optimize the green time equilibrium parameters of different phases considering the green loss equilibrium. A solving method of the function is designed utilizing the diagonalization algorithm based on Frank-Wolfe algorithm. The result shows that（ 1） the new delay calculation model can describe the delay change at bus priority signalized intersections more precisely;（ 2） the optimal timing model shows an effective result of green loss equilibrium with nonpriority phases and the amount of delay reduction at intersection.

关 键 词：交通工程 配时优化 延误叠加分析 交叉口 损失均衡 公交优先 

分 类 号：U491.51[交通运输工程—交通运输规划与管理]