信号控制交叉口布局型式适应性评价  

Applicability Evaluation on Signalized Intersection Layouts

作　　者：徐志红[1] 陈学武[1] 

机构地区：[1]东南大学交通学院,江苏南京210096

出　　处：《城市交通》2009年第4期73-77,共5页Urban Transport of China

基　　金："十一五"国家科技支撑计划(2006BAJ18B07)

摘　　要：交叉口布局型式是空间(车道数量及功能)和时间(相位组合及相位时长)两大资源的整合。为了定量描述城市道路信号控制交叉口布局型式的适应性,提出静态适应度和动态适应度的定义及计算方法。借助VISSIM软件对南京市3个典型信号控制交叉口进行仿真,分析适应度指标与每车平均信控延误、饱和度(v/c比)指标的相关性,得出适应度评价标准。以南京市北京东路—丹凤街交叉口为例,验证了利用适应度指标评价信号控制交叉口布局型式适应性是可行的,同时,在对交叉口时空资源进行优化设计时,适应性指标可为合理选择改善措施提供依据。The geometric layout of an intersection is the integration of resources in terms of space （number of lanes and their functionality） and time （signal phasing and timing）. In order to quantitatively evaluate the adaptability of various forms of urban signalized intersection layouts, this paper presents a definition of static- and dynamic-applicability of different layouts and their computational method. Based on a VISSIM simulation of 3 typical signalized intersections in Nanjing, the paper analyzes the correlations of applicability indicator with average delays per vehicle due to signal control, and v/c ratios, which yields a set of standard values of applicability indicator. A case study of an intersection at Beijing Donglu Rd. and Danfengjie Street in Nanjing illustrates that these standard indicators are suitable to evaluate intersection layouts. Meanwhile, these applicability indicators can be helpful as well in identifying improvement measures to make optimal use of time and spatial resources of an intersection.

关 键 词：交通工程 信号控制交叉口布局型式 适应性 

分 类 号：U491.54[交通运输工程—交通运输规划与管理]