摘要
通过对现有城市道路模型的分析,提出了使用ArcGIS软件构建三维城市道路仿真模型。构造了道路几何网络模块、交通检测模块和控制管理设施模块的二维和三维模型。重点介绍了交叉口节点的二维模型建立,以及基于数字高程图得到城市道路的三维模型。最后将该模型应用于微观交通仿真系统中,可以为仿真系统中其它仿真模型提供空间参照、几何模型和逻辑模型,为各类交通行为数学模型提供存储空间和作用空间,为各种程序算法提供调度接口。与其它道路模型比,该模型能更准确、细致地反映道路网的拓扑关系和道路几何条件,从而为交通仿真模型真实地反映路网交通状态奠定了基础。
After analyzing the current urban traffic network model, this paper presents a new method for building the new 3D simulation model by using ArcGIS software. We developed the 2D and 3D models of topology network, traffic inspection, traffic control and management. The 2D model of traffic intersection and 3D model of urban road network based on DEM are described in detail. At last, the results of simulation are analyzed, which shows that the road model effectively provides special reference, geometrical model and logical model for other mathematic models in the simulation system,and provides storage - space and operation - space for various traffic behavior models and scheduler interface for diversified arithmetics. As compared with forepassed urban traffic model, these models give a more accurate and detailed description of the road network topology and geometry, and lay a good foundation for the traffic simulation models to describe the network traffic state more realistically.
出处
《计算机仿真》
CSCD
2005年第12期214-217,221,共5页
Computer Simulation
基金
广东省自然基金(020163)
关键词
交通仿真
三维
城市道路模型
Traffic simulation
Three - dimension
Urban traffic network model
