交通事故影响下路段排队长度模型  

Queue Length Model of Road Sections Casued by Traffic Accidents

作　　者：杨育捷[1,2] 张幸幸[1] 李思嘉[3] 

机构地区：[1]河南师范大学计算机与信息工程学院,河南新乡453007 [2]智慧商务与物联网技术河南省工程实验室,河南新乡453007 [3]河南师范大学物理与信息工程学院,河南新乡453007

出　　处：《河南科技大学学报（自然科学版）》2015年第4期37-41,6,共5页Journal of Henan University of Science And Technology:Natural Science

基　　金：河南省基础与前沿技术研究基金项目(142300410169);河南省教育厅科学技术研究重点项目基础研究计划(14A510016);新乡市重点科技攻关计划基金项目(ZG14022)

摘　　要：为描述交通事故引起的多车道路段排队现象,以及它与事故横断面实际通行能力、事故持续时间、路段上游车流量之间的关系,提出一种新的模型。此模型利用流量守恒方程,根据二流理论和三检测器原理将事故上游交通流实际运行状态转化为二流运行状态,同时转换变量,建立多车道路段的平均当量排队模型。在此基础上,推导出多车道路段平均当量排队长度的变化率公式。为验证模型的有效性,采用Matlab软件设计了交通事故占2/3车道的排队模拟方案。仿真结果表明:当量排队长度模型能够定量地描述交通事故引起的多车道路段拥挤程度,与实际排队长度变化趋势一致。The phenomenon of multi-lane links queuing caused by traffic accidents as well as its relationship with the actual passing through capacity in the accident cross-section,the duration of the accident and the traffic flow of upstream section were described in this paper. Based on two-fluid theory and three detector principle,the thought of translating the traffic flow state in accident upstream into two-fluid operational state was put forward. According to flow conservation equation,the average equivalent queue model of multi-lane road section was built. The change rate of the queue length was derived. To verify the validity of the proposed model,the queue of the traffic accident taking up 2 /3 lane was simulated by Matlab. The results show that the proposed model can quantitatively describe the crowded degree of multi-lane road caused by traffic accident,and agrees about the actual situation.

关 键 词：二流理论 三检测器 平均当量排队 排队长度变化率 

分 类 号：U491.2[交通运输工程—交通运输规划与管理]