主线机动容量合理分配的匝道协同控制  

Reasonable allocation of flexible capacity for ramp coordinated metering

作　　者：李健[1,2,3] 贾元华[1] 敖谷昌[1] 

机构地区：[1]北京交通大学交通运输学院,北京100044 [2]乔治亚大学富兰克林理学院 [3]北京市轨道交通指挥中心,北京100101

出　　处：《深圳大学学报（理工版）》2012年第5期466-470,共5页Journal of Shenzhen University(Science and Engineering)

基　　金：国家高技术研究发展计划资助项目(2007AA11Z 213)~~

摘　　要：结合进出城道路拥堵特征,提出道路主线机动容量的概念和对其进行合理利用的思想,采用多匝道协同控制方法实施,并以最优控制理论设计实现.通过调整入口匝道计量控制的周期,提高机动容量的利用率,根据设计的冗余等待时间和冗余周期数等指标进行定量对比,仿真结果表明,该方法有效,尤其在减少冗余等待周期数方面可以实现更优的控制品质.The idea of flexible capacity and the problem of its reasonable allocation for ramp coordinated metering are put forth in consideration of the traffic characteristics of periphery road. The optimal coordinated control mete- ring of multi-ramps is discussed, and the efficiency and equity of flexible capacity allocation is analyzed by modif- ying the length of control cycle. A modified ramp latency model is posed using the method of queuing theory, and the related redundancy latency cycle amount is designed to evaluate the consequence quantitatively. With in-situ traffic flow data, two scenarios of no-control and coordinated with different flexible capacity using strategies are compared. Results demonstrate the advantages of the new method.

关 键 词：交通控制 高速公路 匝道协同 机动容量 最优控制 冗余等待周期数 

分 类 号：N945.21[自然科学总论—系统科学] U491.5[交通运输工程—交通运输规划与管理]