高速公路出口匝道地面衔接部功能区的界定  

Functional Area Definition of Off-ramp Connective Road

作　　者：宁静 项乔君[1] 陆键[1] 沙静[1] 

机构地区：[1]东南大学交通学院,南京210096

出　　处：《交通运输工程与信息学报》2010年第4期49-53,76,共6页Journal of Transportation Engineering and Information

基　　金：国家自然科学基金项目:高速公路出口匝道几何特征及控制方式对交通安全和通行效率的影响研究(项目编号:50778040);西部交通项目:高速公路出口匝道交通安全保障技术(项目编号:200831800008)

摘　　要：匝道设计的合理与否,直接关系到高速公路的交通安全和运行效率。由于高速公路主线与出口匝道之间交通流运行速度存在较大的差异,导致在出口匝道上交通流运行极不稳定,并产生大量的交通冲突,成为高速公路拥堵和事故多发地带。为改善高速公路出口匝道的安全现状,本文在提出出口匝道地面衔接部功能区概念的基础上,给出了功能区的界定方法,并最终给出了典型出口匝道衔接部功能区范围的建议值,为改善高速公路匝道出口功能区内交通安全水平提供了必要的理论支撑和技术依据。The reasonableness of off-ramp design is related to the freeway traffic safety and efficiency.Because of the great difference in speeds of the vehicles on the off-ramps and the highway,the traffic flow was unsteady and many traffic conflicts were brought out.So,off-ramp is an area of traffic congestion and accident taking place frequently.To improve the safety status of freeway off-ramp,a definition method for the functional area was proposed based on presented a function area concept.At last,the lengths of the representative functional area were suggested,which provided a reference to further improve the efficiency and safety of the traffic stream.

关 键 词：高速公路 出口匝道 地面 衔接 功能区 界定方法 交通安全 运行效率 交通流 运行速度 理论支撑 交通冲突 技术依据 极不稳定 合理与否 公路主线 安全水平 建议值 事故 设计 

分 类 号：U[交通运输工程]