铁道标准设计
鐵道標準設計
철도표준설계
RAILWAY STANDARD DESIGN
2015年
5期
5-10
,共6页
高速铁路%选线%虚拟环境%基元模型库
高速鐵路%選線%虛擬環境%基元模型庫
고속철로%선선%허의배경%기원모형고
High-speed railway%Route selection%Virtual environment%Primitive model bank
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。
針對高速鐵路數字化工務工程虛擬環境建設過程中，基元模型管理分散，層次結構不清晰，文件繫統存儲查詢低效、安全性低，模型顯示缺乏沉浸感等特點，同時攷慮基于BIM的三維實體選線設計需求，提齣構建高速鐵路工務工程基元模型庫，對基元模型進行集中組織與管理的方法。研究基元模型分類編碼方法，併以此為基礎設計基元模型庫的層次結構。給齣基元模型立體顯示方案和數據庫存儲方案。基于Visual C++、Oracle數據庫及OSG圖形庫開髮基元模型庫管理繫統。在西部某高速鐵路的三維實體選線設計及視景倣真中對基元模型庫繫統進行應用，結果錶明利用該繫統能有效簡化工務工程虛擬環境的構建流程，顯著提高線路構造物實體模型實時動態建模的速度，模型交互沉浸感彊，有助于提高三維實體選線設計的效率。
침대고속철로수자화공무공정허의배경건설과정중，기원모형관리분산，층차결구불청석，문건계통존저사순저효、안전성저，모형현시결핍침침감등특점，동시고필기우BIM적삼유실체선선설계수구，제출구건고속철로공무공정기원모형고，대기원모형진행집중조직여관리적방법。연구기원모형분류편마방법，병이차위기출설계기원모형고적층차결구。급출기원모형입체현시방안화수거고존저방안。기우Visual C++、Oracle수거고급OSG도형고개발기원모형고관리계통。재서부모고속철로적삼유실체선선설계급시경방진중대기원모형고계통진행응용，결과표명이용해계통능유효간화공무공정허의배경적구건류정，현저제고선로구조물실체모형실시동태건모적속도，모형교호침침감강，유조우제고삼유실체선선설계적효솔。
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.
