可变车道的城市路网备用容量模型  

Reserve Capacity Model for Urban Road Network with Variable Lanes

作　　者：张鹏[1,2] 李文权[1] 常玉林[2] 

机构地区：[1]东南大学交通学院,江苏南京210096 [2]江苏大学汽车与交通工程学院,江苏镇江212013

出　　处：《西南交通大学学报》2010年第2期255-260,共6页Journal of Southwest Jiaotong University

基　　金：国家"十一五"科技支撑计划项目(2006BAJ18B03);国家自然科学基金资助项目(50978057)

摘　　要：为了研究车道分配对路网容量的影响,通过分配道路的双向车道数和设置交叉口的信号配时参数,建立了双层规划的路网备用容量模型.上层模型用于路网车道分配和信号配时参数联合优化,以使路网容量最大;下层模型是用户均衡分配模型,可预测司机对于某种路网车道分配和信号设置的择路行为.用基于灵敏度的启发式算法进行了算例分析.结果表明,该模型可以合理调节路网路径的阻抗,使交通量的分布更均衡,路网备用容量比现有模型增大了32%.To study the influence of lane allocation on road network capacity,a bi-level programming model of network reserve capacity was established by allocating lane numbers in both directions of two-way roads and setting traffic signal-timing parameters at individual intersections.The upper-level problem is the integrated optimization of lane allocating and signal timing to maximize the reserve capacity of road network.The lower-level problem represents a network equilibrium model,which predicts the reaction（i.e.,route choice behaviors） of drivers to any given lane allocation and signal control pattern.Then,a heuristic solution algorithm based on sensitivity analysis was proposed to solve the bi-level programming model.The numerical test results show that,compared with the traditional model,the bi-level model proposed in this paper can increase network reserve capacity by 32%,because it can regulate road impedance to make the distribution of traffic flows more balanced in all lanes.

关 键 词：可变车道 备用容量 信号配时 用户均衡 双层模型 

分 类 号：U491.1[交通运输工程—交通运输规划与管理]