【作者】 魏连雨；

【导师】 孟广文；

【作者基本信息】 河北工业大学 ， 建筑与土木工程， 2010， 硕士

【摘要】 枢纽型互通式立交是快速路系统中的重要交通节点,是决定快速路能否发挥最大功能的关键。本文以天津卫昆立交为例,对城市立体交叉通行能力进行研究。研究通过先进的交通数据采集仪器,对卫昆互通立交交通流进行观测,采集了大量互通立交的道路条件与交通状况数据库,获得基本路段、分/合流区、交织区,以及匝道的交通流特征参数,并依据可穿插间隙理论,建立分/合流区和交织区通行能力理论模型,推导其通行能力。通过实测和仿真数据对美国HCM2000速度和密度经验模型进行标定结合互通立交实际交通状况,通过实测数据对主线和匝道进行典型车型期望速度标定、合流区加速车道与交织区集散车道换车道模型标定、典型车辆加减速特性标定。通过仿真试验,建立互通立交流量-密度-速度统计分析模型,提出互通立交各部分和整体的通行能力和服务水平指标。更多还原

【Abstract】 Hub-based Interchange is an important transport node in expressway system, which is the key to determine whether the rapid way most function. In this paper, make WeiKun Interchange in Tianjin as an example, to study the urban capacity of interchange. Through advanced traffic data collection equipment, the research observations traffic flow of Wei-Kun Interchange, collecting a large number of Interchange road conditions and traffic conditions database, access to basic sections, sub/confluence area, cutting area, as well as the ramp of the traffic flow characteristics parameters and based on the Acceptable gap theory, establishment theoretical model of sub/confluence zone and cutting zone capacity, derived its capacity.Through measured and simulation data experience the speed and density calibration model of the United States HCM2000 combined with the actual traffic conditions of the Interchange, through the measured data the study experience the main line and model expectations of a typical ramp rate of calibration, the convergence zone and the acceleration lane to change lanes intertwined area distribution model calibration typical characteristics of the vehicle speed calibration. Through simulation experiments, the establishment of Interchange Flow - density - velocity model of statistical analysis, the Interchange and the various parts of the overall traffic capacity and service level indicators.更多还原