【作者】 宋超；

【导师】 吴建清；

【作者基本信息】 山东大学 ， 道路与铁道工程， 2025， 硕士

【摘要】 在右转交通量高的路段,普通单右转车道难以满足通行需求,双右转车道提供了解决思路。然而,目前双右转车道设计在道路通行能力及交通冲突方面存在一定缺陷,亟需基于道路通行能力及交通冲突分析优化双右转交叉口设计。道路交叉口通行能力分析可以指导交叉口设计方案评估、布局优化、信号控制优化、容量评估和设计效果验证等工作,为交叉口设计提供科学依据。交通冲突分析在交叉口设计中可以用于评估交叉口的安全性、指导设计优化、评估通行能力和验证交通管理措施效果。本文设计了两种双右转车道的交叉口渠化方式,基于Unity 3D对两种渠化方式进行了交通仿真,并获得了每条车道的通行能力及车辆轨迹数据,提出了基于轨迹数据的交通冲突判别方法。设定了不同右转交通量以及行人和非机动车通行量,并以通行能力和交通冲突频次为评价指标,将两种双右转车道设计与普通交叉口设计在不同情况下进行了对比。以非机动车与行人量为4000辆(人)/h且右转到达交通量为2000为例,三种交叉口的通行能力分别为4006、4153、4391辆/h,交通冲突次数分别为464、442、423次。因此,最终结果表明双右转交叉口 2(双独立右转车道)的通行能力最强,单右转车道的通行能力受行人和非机动车交通量影响,行人和非机动车交通量的增加将降低右转车道的通行能力。随着右转交通量的增长,右转相关的交通冲突均增加。普通交叉口的冲突次数最多,其次是双右转交叉口 1(直右车道+独立右转车道),最后是双右转交叉口 2。因此,当右转车辆交通量大于一定值(该值与行人和非机动车交通量相关)时,应考虑建设双右转车道以缓解单右转车道的交通压力。双右转交叉口 2的设计方式在道路通行能力和交通冲突方面均具有优势。本文的研究成果对于实际交叉口双右转车道设计具有一定的指导意义。更多还原

【Abstract】 In areas with high right-turn traffic volumes,a single right-turn lane often fails to meet demand,whereas dual right-turn lanes offer a potential solution.However,current dual rightturn lane designs exhibit certain deficiencies in terms of road capacity and traffic conflicts,necessitating optimization based on capacity and conflict analysis.Intersection capacity analysis aids in evaluating design schemes,layout optimization,signal control improvement,capacity assessment,and design validation,thereby providing scientific basis for improving efficiency and safety.Traffic conflict analysis can assess intersection safety,guide design optimization,evaluate capacity,and validate traffic management measures.This study designed two dual right-turn lane intersection channelization methods and conducted traffic simulations using Unity 3D.The simulations provided capacity and vehicle trajectory data,leading to a traj ectory-based traffic conflict identification method.Various rightturn traffic volumes,pedestrian,and non-motorized traffic volumes were considered,and the two designs were compared with a standard intersection based on capacity and conflict frequency.For instance,with a non-motorized and pedestrian volume of 4000 units/h and a right-turn traffic volume of 2000 units/h,the capacities of the three intersection designs were 4006,4153,and 4391 units/h,respectively,with conflict frequencies of 464,442,and 423 times.Thus,the results indicate that Dual Right-Turn Intersection 2 has the highest capacity,and single right-turn lane capacity is significantly affected by pedestrian and non-motorized traffic.Increasing right-turn volumes leads to more conflicts in all intersection designs.Dual Right-Turn Intersection 2 demonstrates advantages in both capacity and conflict reduction,making it preferable when right-turn traffic exceeds a certain threshold related to pedestrian and non-motorized volumes.The research results of this paper have certain guiding significance for the design of dual right-turn lanes at actual intersections.更多还原