精细化交叉口数据模型的建模方法

Modeling approach of precise intersection data model

针对现阶段交通网络数据模型对交叉口处物理几何形态以及交通组织渠化描述不足的现状,提出了一种面向精细化交叉口的路网数据模型,从物理、逻辑和几何三个层面对交叉口的逻辑拓扑、标线规则等信息进行描述,以支持交通分析的计算需求;同时,提出了一种基于物理拓扑和逻辑拓扑采用基于要素的线性参考技术,构建交叉口几何拓扑的建模方法;最后对平面交叉口进行建模实验。实验结果表明该方法能够有效地支持精细化交叉口几何数据的自动生成。

Aiming at the deficiency of physical geometry and traffic organization canalization description in traffic network data model at present,this paper presented a road network data model oriented to refined intersections.The model described logical topology and rule of markings of intersections from physical,logical and geometric levels.It also could support the calculation requirements of traffic analysis.At the same time,based on physical topology and logical topology,this paper presented a modeling method of intersection geometry topology by using linear reference technology based on elements.The results show that the proposed method can effectively realize the automatic generation of precise intersection models.