数字化工务工程基元模型库建模方法研究

Study on model establishment method in digital primitive model bank belong to maintenance department

数字化工务工程虚拟环境是数字铁路系统的重要组成部分。通过建立工务工程基元模型库来构造线路实体构造物,可有效简化工务工程虚拟环境的构建流程。提出了参数化三维建模方法建立简单模型基元,采用AutoCAD及3DS MAX软件建立复杂模型基元,并研究了模型简化算法。针对异质异构模型来源,设计了一个通用的模型读取接口,并给出了模型Oracle数据库存储解决方案。通过在铁路数字化选线系统和高速列车数字化仿真系统中模型基元的应用对虚拟场景构建方法和使用效果进行了研究,结果表明,基元模型库的使用有效简化了工务工程虚拟环境的构建流程。

The digital track maintenance program has created a virtual environment that stands imperative to digital railway .The construction of an element bank dedicated to this area may ease the recreation of the track structure,which further simplifies the working flow in building up the virtual environment for digital track maintenance.In this sense,the paper proposes the parameterized 3D modeling method for the construction of simple model elements ,and suggests the use of AutoCAD and 3 DS MAX software in case of complicated elements.Accordingly,an in-depth study is conducted to work out a simplified calculation approach .The heterogeneous origin of the model gives inspirations to a compatible interface for the model reading and the solutions to the Oracle database storage .At the same time,the paper,with the help of the digital route-selection system and the HSR digital simulation system ,studies the construction methods of the virtual environment and its working effect .The results indicate that the application of the element database effectively trim the construction flow of the environment .