水利水电工程的图形信息模型研究

Research of hydropower project information modeling

在水利水电工程领域,应用信息技术较普及的是计算机辅助设计技术,然而这些研究和应用仅仅表现的是图形本身的几何属性,并没有将一些关键的物理属性、拓扑等信息融入到图形之中,忽略了图形和信息的融合。本文基于BIM理论,提出水利水电工程的图形信息模型(HPIM,Hydropwer Project Information Modeling)的总体框架,通过CAD中的三维几何造型引擎(ACIS)和拓扑运算用基本图元构造出工程几何形态,并将图形运算与图元扩展数据贮存相结合,实现图形与信息的融合。构造出的图形信息模型为水利水电工程不同阶段的应用提供简洁的共享的方法。

The application of existing graphics technology in the field of water and hydropower projectsdoes not have the integration of graphics and related attribute information,which is not conducive to thepreservation and transmission of information. Based on BIM theory,this paper puts forward the essence andthe overall framework of the hydropower project information modeling(HPIM), constructs the geometricalform of the project through the 3D geometry modeling engine and topology operation, and combines thegraph cut operation with the data storage of the extended attribute,using the'XDATA'extended data toadd the physical parameters and construction information as the additional attributes to the CAD graphics.The hydropower project information model is constructed,which lays the foundation for the application anddata transfer in different stages of water and hydropower projects,and its development and needs are dis-cussed.