面向高速列车耦合仿真的三维虚拟高速铁路精细化实体环境建模研究

The coupling simulation of the high speed railway is an effective approach to establish 350km/h railway technology standard. For the purpose of making the simulation result more accurate and reliable, it should be supported by the entity environment of the refine railway. Therefore, this paper carries out in-depth research on the key technology of the refine entity environment modeling of 3D virtual high speed railway. It is aimed at forming refine entity environment modeling approach for high speed railways. The research achievements not only can be applied in the coupling simulation of the high speed train, but also are expected to provide new thought and theoretical basis for the modeling of complex linear distribution system.. The main research content includes the following aspects: based on the bridge building information models, carry out research on the detailed entity expression method of high speed railway bridges in 3DGIS, break through the simple expression of complex bridge types in 3DGIS,so as to reflect the constitution semantics and shape of the actual bridge; carry out research on the entity modeling particle division of specific long linear continuous distribution articles of the high speed railway (e.g. seamless rails of high speed railway), confirm the reasonable model dimension, enable the constructed models to meet the demands of simulation and the demands of visible effect of the railways; carry out research on the rapid generating algorithm of the railway entity model space location and space direction data, so as to provide support for rapidly building the refine entity environment of 3D virtual high speed railway.

高速列车耦合仿真是一种制定350km/h铁路技术标准的有效途径，为了使仿真结果更加准确与可靠，需要精细化铁路实体环境支撑。为此，本课题拟对三维虚拟高速铁路精细化实体环境建模的关键技术方法展开深入研究，旨在形成高速铁路精细化实体环境建模方法，研究成果不仅可用于高速列车耦合仿真，也有望为复杂线状分布系统的精细化实体环境建模提供新思路和理论依据。. 主要研究内容包括：基于桥梁建筑信息模型，研究高速铁路桥梁系统在3DGIS的详细实体表达方法，突破以往复杂桥梁类型在3DGIS中的简化表达，以如实反映现实桥梁的组成语义与形状；开展高速铁路特有的长线状连续分布物体，比如高铁全线无缝钢轨的实体建模粒度划分研究，确定合理的模型尺寸，使构建的各类模型既能满足仿真需要，又能顾及铁路可视化效果等需求；研究铁路实体模型空间位置与方位数据快速生成算法，为快速构建三维虚拟高速铁路精细化实体环境提供支持。

为了使高速列车耦合仿真仿真结果更加准确与可靠，需要精细化铁路实体环境支撑，为此，本课题开展了三维虚拟高速铁路精细化实体环境建模研究。本课题建立了一套适应于高速列车耦合仿真的三维虚拟高速铁路精细化实体环境建模理论与方法，主要研究成果如下：.①构建了高速铁路模型组件库及其语义描述，实现了高速铁路特有的长线状连续分布物体实体建模粒度划分，可更好地支持高速铁路精细化建模；.②实现了铁路实体模型空间位置与方位数据快速生成算法，为快速构建三维虚拟高速铁路精细化实体环境提供支持；.③基于OSG平台实现了三维虚拟高速铁路精细化实体环境构建，为高速列车耦合仿真提供了基础；.研究成果可直接用于高速列车耦合仿真的科学实验和管理分析，对我国高铁核心技术的自主创新具有重大意义。