基于车流波动理论的匝道达到控制与仿真效果评价  

Ramp Metering and Simulation Effect Evaluation Based on Traffic Fluctuation Theory

作　　者：康诚 潘新福 严欣 范欣炜 KANG Cheng;PAN Xinfu;YAN Xin;FAN Xinwei(CATARC Automotive Proving Ground Co.,Ltd.,Yancheng 224100,China)

机构地区：[1]中汽研汽车试验场股份有限公司,江苏盐城224100

出　　处：《森林工程》2024年第1期191-200,共10页Forest Engineering

基　　金：江苏省科技项目(BF2021067)。

摘　　要：以匝道达到控制为主体的合流区主动交通管控是高速公路与城市快速路在提升交织区通行能力与交通安全采用的重要方法。采用历史真实交通数据,结合优化的速度波动理论模型,构建车辆在拥挤流交织过程中的运行状态模型,量化分析混合控制决策下最优化的管控方案,并通过优化的仿真平台,获取车辆轨迹、分布及冲突状况等信息,验证结论的实际效果。以秦洪立交为例进行模型试验论证,对比匝道单一控制与匝道主线混合控制的优化效果。结果表明,相对于无管控状态,单一匝道控制下冲突减少52.5%,但车辆延误增长20.5%;混合控制下冲突减少68.1%,且车辆延误降低12.0%。由此可知控制模型对匝道交通安全与效率有明显优化效果。其中,采用匝道主线混合控制时效果最佳,有效提升匝道通行效率和交通安全效益。The active traffic control in the merging area,which takes ramp arrival control as the main body,is the main means adopted by the expressway and urban expressway to improve the capacity and traffic safety of the weaving area.In this study,the historical real traffic data and the optimized theoretical model of speed fluctuation are used to build the vehicle arrival model in the process of congestion and queue weaving,and the optimal control scheme under the mixed control decision is quantitatively analyzed.Through the optimized simulation platform,the vehicle trajectory,distribution and conflict status are obtained,and the actual effect of the conclusion is verified.This study takes Qinhong Interchange as an example to demonstrate the model test,and verify the optimization effect of ramp single control and ramp main line mixed control under the optimization effect.The results show that the conflict under ramp control is reduced by 52.5% and the vehicle delay is increased by 20.5% compared with the uncontrolled state.The conflict and vehicle delay under hybrid control are reduced by 68.1% and 12.0%,respectively.It can be seen that the control model has obvious optimization effect on ramp traffic safety and efficiency.One of the most effective control strategies is the ramp mainline mixed control,which leads to significant improvements in ramp traffic efficiency and traffic safety.

关 键 词：车流波动理论 交通组织 入口匝道控制 交通仿真 交通安全评价 

分 类 号：U491[交通运输工程—交通运输规划与管理]