摘要
针对高速铁路数字化工务工程虚拟环境建设过程中,基元模型管理分散,层次结构不清晰,文件系统存储查询低效、安全性低,模型显示缺乏沉浸感等特点,同时考虑基于BIM的三维实体选线设计需求,提出构建高速铁路工务工程基元模型库,对基元模型进行集中组织与管理的方法。研究基元模型分类编码方法,并以此为基础设计基元模型库的层次结构。给出基元模型立体显示方案和数据库存储方案。基于Visual C++、Oracle数据库及OSG图形库开发基元模型库管理系统。在西部某高速铁路的三维实体选线设计及视景仿真中对基元模型库系统进行应用,结果表明利用该系统能有效简化工务工程虚拟环境的构建流程,显著提高线路构造物实体模型实时动态建模的速度,模型交互沉浸感强,有助于提高三维实体选线设计的效率。
In view of the primitive model with decentralized management, unclear hierarchical structure, inefficient querying file system, low security and insufficient model displaying when the virtual environment of the digitizing permanent way engineering of high-speed railway is being established, and of the requirements for 3D railway location design, this paper establishes a primitive model bank for the permanent way engineering of high speed railway and proposes the method to organize and manage the model. In additions, this paper puts forward a coding method to classify primitive models and also design the hierarchical structure of the primitive model bank in accordance with the coding method. The three-dimensional displaying scheme and the database storage scheme for the primitive model are provided. Furthermore, the management system for the primitive model is developed based on Visual C＋＋, Oracle database and OSG graphics library. The system of the primitive model bank is applied in 3D railway route selection and visual simulation for a high speed railway in West China. The result indicates that the system can simplify the process to set up virtual environment of the permanent way engineering, significantly improve the real-time dynamic modeling speed for solid models of railway line structures, reinforce model interaction and improve the efficiency of 3D railway route selection.
出处
《铁道标准设计》
北大核心
2015年第5期5-10,共6页
Railway Standard Design
基金
国家自然科学基金(51278316)
西南交通大学高速铁路线路工程教育部重点实验室开放研究基金(2010-HRE-02)
铁道部科技开发计划项目(重大-33-2011)
关键词
高速铁路
选线
虚拟环境
基元模型库
High-speed railway
Route selection
Virtual environment
Primitive model bank
