桥梁结构的三维建模技术

The Techniques for Building 3D Bridge's Geometric Models

本文针对桥梁结构的具体特点，对不同的几何建模技术进行深入的论述，提出了以人机交互和模板参数化并存的图形建模方法。并且对不同的桥梁施工模型采用面向对象数据库进行管理，使得系统的层次性更加清晰，从而为提高桥梁CAD系统的建模能力奠定了良好的基础。并以一个实现的例子进行深入的阐述。

Some different tecboques of building geometric models of bridge Structures are discussed in this paper.An efficient technique by defining both manmachine interachon and paramters is proposed for building geometric models in accordig to the characteristics of the bridge structures.This technique adopts the objectoriented daboase to manage information of bridge construction stages and enhances the geometrical modeling capacities of a bridge CAD system.An application example isillustrated in the paper