道路水浸事件下的应急疏导配流  

Traffic assignment of urgent dispersion for road flooding

作　　者：胡继华[1,2] 梁嘉贤 高立晓[1] HU Jihua;LIANG Jiaxian;GAO Lixiao(Research Centre of Intelligent Transportation System, School of Engineering, Sun Yet-sen University, Guangzhou 510006, China;Guangdong Provincial Key Laboratory of Intelligent Transportation System, Sun Yet-sen University, Guangzhou 510006, China)

机构地区：[1]中山大学工学院智能交通研究中心,广东广州510006 [2]中山大学广东省智能交通系统重点实验室,广东广州510006

出　　处：《武汉大学学报（工学版）》2018年第6期504-509,552,共7页Engineering Journal of Wuhan University

基　　金：国家自然科学基金项目(编号:41271181);广东省科技计划项目(编号:2016A010101015)

摘　　要：为减缓道路水浸下交通拥堵影响,提出一种水浸事件下的应急疏导配流方案生成方法,使用分流路径查询算法和自适应动态交通流分配算法实现疏导区域的确定和相应交通流的分配,从而生成应急疏导配流方案.以广州市番禺区为例,调查不同峰期下的交通流数据（含18个交叉口）,生成区域内两个水浸黑点在不同水浸深度下的应急疏导配流方案,并利用VISSIM实现疏导仿真.结果表明,使用应急方案实行疏导配流可有效降低疏导区域内的平均延误,并随水浸深度上升,效果越明显,适用于缓解道路水浸引起的交通拥堵等问题.The paper proposes a method to generate a traffic assignment scheme of urgent dispersion in order to minimize the impact of congested traffic induced by flooded roads.In the method,Shunt Paths Search and Adaptive Dynamic Assignment algorithm are developed to determine an urgent dispersion area and its traffic assignment to generate the traffic assignment scheme in urgent dispersion area.The proposed methodology has been applied to Panyu district of Guangzhou,China,with traffic-volume data in 18 intersections collected by a traffic survey in morning and evening peak/non-peak periods.The traffic assignment schemes of urgent dispersion are generated according to different depths of water spots of two incident area,due to the reduction of road capacity caused by the water spots.In order to evaluate the feasibility of the schemes in the study area,they are implemented in VISSIM.As expected,the average delay had contributed to a reduction in urgent dispersion area after using the traffic assignment schemes and the effect of the schemes became more obvious with the increasing depth of the water spots.It is proved that the method can be utilized to solve the problem of urban road flooding.

关 键 词：交通工程 应急疏导 分流路径查询 自适应动态交通流分配 道路水浸 

分 类 号：U491.4[交通运输工程—交通运输规划与管理]