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针对传统城市交通流模型仅适用于非拥挤城市交通路网规划,无法拟合路段行驶时间依赖于交通负荷变化的城市交通流时空分布网络问题的缺陷,运用GERT随机网络对城市交通流进行仿真模拟.将普通动态交通规划模型无法反映的各路径交通流之间相互影响的内在逻辑关系考虑在内,使得动态交通规划更具现实指导意义.对贵阳喷水池交通枢纽路段的实际案例分析表明,该方法可以为城市交通规划提供有力地决策支持.
The traditional urban traffic flow model is only suitable for non-crowded urban traffic network planning, and can not fit the shortcoming that the traffic time is dependent on the urban traffic flow spatial-temporal distribution network. The GERT stochastic network is used to simulate the urban traffic flow Taking into account the inherent logical relationship between the traffic flow of each path, which can not be reflected by the general dynamic traffic planning model, the dynamic traffic planning is more realistic and practical.Analysis of the actual case of the fountain junction in Guiyang shows that this method Can provide strong decision support for urban transport planning.