考虑行人过街因素的环形交叉口配时优化方法研究  

Research on Roundabout Timing Optimization Method in View of Pedestrian Overpass

作　　者：马庚华 何瑞[2] 郑长江[2] 方雅君 许晟鑫 Ma Genghua;He Rui;Zheng Changjiang;Fang Yajun;Xu Shengxin(College of Harbour, Coastal and Offshore Engineering,Hohai University Nanjing 210098,China;College of Civil and Transportation Engineering,Hohai UniversityNanjing 210098, China;College of Mechanical adn Electrical Engineering,Northeast Forestry University,Harbin 150040,China)

机构地区：[1]河海大学港口海岸与近海工程学院,江苏南京210098 [2]河海大学土木与交通学院,江苏南京210098 [3]东北林业大学机电工程学院,黑龙江哈尔滨150040

出　　处：《华东交通大学学报》2019年第1期59-65,共7页Journal of East China Jiaotong University

基　　金：国家自然科学基金项目(51608171)

摘　　要：环形交叉口大多位于城市的中心区域,有着美化城市景观和交通疏导的重担。然而环形交叉口存在普遍的交通堵塞问题,给城市中心区域交通通行能力带来重创,并且大量的过街交通流导致严重的人车冲突,给环形交叉口的交通安全带来极大的隐患。本文通过分析道路人行横道行人过街的交通特性等,构建信号控制多目标优化模型,选取遗传算法求解,结合实例表明该模型能有效提高我国环形交叉口通行能力,缓解交通冲突。Roundabout is mostly located in the downtown area, which can beautify the urban landscape and alleviate traffic. However, there is a widespread traffic jam in the ring intersection, which brings heavy traffic capacity in the central area of the city, and a large number of traffic flows lead to serious human and car conflicts, resulting in great hidden danger to the traffic safety of the roundabout. By analyzing the traffic characteristics of pedestrian crossing in road crosswalk, this paper constructs a multi-objective optimization model of signal control and selects genetic algorithm. It shows that the model can effectively improve the traffic capacity of the roundabout and alleviate traffic conflicts in China.

关 键 词：环形交叉口 行人过街 通行能力 多目标优化 交通安全 

分 类 号：U491.4[交通运输工程—交通运输规划与管理]