一种基于中线拓扑关系的巷道节点自适应平滑建模方法

A self-adaptive smoothing modeling method for tunnel nodes based on centerline topology relationship

地下空间中的三维巷道结构复杂,模型数据庞大,为解决巷道交叉口等特殊位置的精细化表达问题,本研究提出一种基于中线拓扑关系的巷道节点自适应平滑建模方法。该方法根据巷道中心线数据,自适应判别根结点下各子结点间的拓扑关系以区分各类型巷道,并设计一种半拱形曲面构建相应的模型组件,通过组件拼接的方式,实现精细化平滑建模。最后,通过对某一段巷道数据进行验证,建立了一个由三通、四通等各类交叉口平滑相连的完整巷道模型,为地下空间中复杂巷道的精准建模提供了有效的解决途径。

The three-dimensional roadway structure in underground space is complex and the model data is huge.In order to solve the problem of fine expression of roadway at special locations such as intersections,this study proposed a self-adaptive smoothing modeling method for tunnel nodes based on centerline topology relationship.Based on the roadway centerline data,the method adaptively discriminates the topological relationship between the child nodes under the root node to distinguish different types of roadway.A semi-arch surface was designed to build corresponding model components and the method of component splices was used to realize fine and smooth modeling.Finally,by verifying the data of a certain section of roadway,a complete roadway model smoothly connected by various intersections such as three-way and four-way intersections was established,which provides an effective solution for the accurate modeling of complex roadway in underground space.