铁路桥梁BIM程序的设计与实现

针对桥梁工程设计的特点,自主开发一款具有二维交互设计,及三维显示功能的铁路桥梁BIM设计程序。阐述了在建筑信息模型(BIM)模式下桥梁程序开发不易完全抛弃二维设计视图及传统设计的理念。着重介绍了该程序的MVC框架、桥梁设计功能,以及在二维、三维显示视口开发中所使用的OPENGL VBO、四叉树空间索引等技术。通过工程项目应用,表明该程序具备BIM铁路桥梁方案设计功能,三维场景直观生动,并且结合二维视图辅助,使用户能够直接、实时地掌握桥梁结构高程、尺寸等数据,更好地帮助决策合理的桥梁方案。

Design and implementation of BIM program for railway bridges

In view of the characteristics of bridge engineering design, a BIM design program for railway bridges with two-dimension interactive design and three-dimension display function was independently developed. This article described the development of bridge programs in BIM mode, emphatically introduced the MVC framework, bridge design function, OPENGL VBO, quadtree spatial index and other technologies used in the development of two-dimensional and three-dimensional display viewport. Through the project application, it shows that the program has BIM railway bridge design function, three-dimensional scene is intuitive and vivid, and combined with twodimensional view assistance, users can directly grasp the bridge structure elevation, size and other data in real time, better help decision-making reasonable bridge scheme.