基于城市信号交叉口直行非机动车膨胀特性研究  

Research on the particular expanding impact of the non-motor vehicles when passing directly through the urban area signal intersections

作　　者：张旭[1] 朱普周 段宇洲[1] ZHANG Xu;ZHU Pu-zhou;DUAN Yu-zhou(School of Civil Engineering,Henan University of Technology,Zhengzhou 450001,China)

机构地区：[1]河南工业大学土木工程学院,郑州450001

出　　处：《安全与环境学报》2021年第5期1978-1984,共7页Journal of Safety and Environment

基　　金：城市交通管理集成与优化技术公安部重点实验室开放课题(2017KFKT02)。

摘　　要：为了研究直行非机动车与直行机动车的冲突,提出了基于非机动车膨胀特性的冲突判别方法。引入非机动车膨胀宽度模型,依据膨胀宽度分析非机动车的膨胀特性;建立了多元回归分析模型,分析影响非机动车膨胀宽度的因素。选取郑州市区两个交叉口进行案例分析,利用摄像机采集非机动车高峰时期的数据,考虑电动自行车混入比例达80%的实际状况,研究了城市信号交叉口直行非机动车膨胀特性。通过分析电动自行车在混入率达到80%时平均每辆车所占横向空间,得出在非机动车通过信号交叉口膨胀宽度为5时与机动车产生冲突;通过数据拟合得出非机动车膨胀宽度与直行非机动车流量的关系,通过建立多元线性回归模型得到非机动车膨胀宽度的影响因素。通过对城市平面交叉口直行非机动车膨胀机理进行研究,为提高交叉口的通行效率和城市管理规划提供了理论依据。The given paper is aimed to investigate the invasion effects of the non-motor vehicles on the motor vehicle traffic flow at the urban signalized intersection,with an expansion model developed for the straight-through motor vehicles and the straightthrough non-motor ones.And,then,the expansion degree model of the non-motorized vehicle has been introduced with the careful analysis of the expansion violent behaviors of the non-motor vehicles in accordance with their expansion width.And,last of all,we have established a multiple regression analysis model to clarify the factors affecting the expansion width of the non-motor vehicles,with the data collected and summarized at the 2 sites in the Zhengzhou(Henan)area with the camera operated to collect the non-motorized vehicle data during the peak hours.And,then,through the establishment of the model,the expansion features of non-motor vehicles have been traced and examined by taking into account the actual situation of the electric bikes mixing proportion up to 80%.The results of our above on-spot observation and examination show that the average horizontal space taken by each e-bike is 1.75 m when the mixing rate reaches 80%.It can thus be concluded that the expansion width of the non-motor vehicles is 5 with lots of conflicts with the motor vehicles.Thus,the relationship between the expansion width and the flowing current of the straight non-motor vehicles can be analyzed through a clearcut data fitting formula.And,next,the multiple linear regression model analysis helps us further conclude that the influential factors of the expansion width should be added up by the number of electric bicycles and ordinary bicycles.And,meanwhile,through the multiple linear stepwise regression analysis,the influential factor analysis model of the expansion width:y=2.917+0.169 x1+0.289 x2.And,furthermore,when the number of electric bicycles reaches about the statistical maximum,the maximum expansion width can be said to reach 9.Thus,it can be said that the given paper can be said to di

关 键 词：安全工程 膨胀特性 电动自行车 信号交叉口 交通冲突 

分 类 号：X951[环境科学与工程—安全科学]