基于国产图形平台的桥梁参数化建模研究

Research on Parameterized Modeling of Bridges Based on Domestic Graphic Platforms

为了使BIM技术自主可控,且更好的服务于桥梁工程,本文以国产平台中桥梁结构参数化建模为研究对象,探索桥梁结构参数化驱动要点和建模方法,提出桥梁批量建模的实现方式和流程。同时基于广联达GDMP建模平台,使用C++语言二次开发技术实现了从形成面域到三维实体的拉伸、放样、融合等建模接口方法,构建利用平台代码驱动的参数化系统模型,并借助QT框架研发桥梁参数化设计系统,连通构件的创建、入库、拼装等全套流程,实现桥梁结构三维参数化建模,验证该技术的可行性和适用性。

In order to achieve independent and controllable BIM technology and better serve bridge engineering,this paper focuses on the research of parameterized modeling of bridge structures in domestic platforms,explores the key points and modeling methods of parametric driving for bridge structure,and proposes the implementation method and process of batch modeling for bridges.Meanwhile,based on the Glodon Design Modeling Platform(GDMP)as the modeling platform,the C++language secondary development technology is used to realize modeling interface methods such as stretching,lofting,and fusion from forming surface domain to three-dimensional solid,and build a parameterized system model driven by platform code.With the help of the QT framework,a parameterized design system for bridges is developed,which connects the whole process of component creation,storage,and assembly,and realizes three-dimensional parametric modeling of bridge structures.The feasibility and applicability of this technology are verified,providing references for the application and development of domestic platform modeling technology in the future.