【摘要】 通过对混凝土结构表观裂缝、表层缺损和结构变形变位方面的表观损伤特征分析,提出了结构表观损伤特征对象的描述方法和表征模型,并建立了在满足相似性及精度要求下的结构表观裂缝的化简数据模型。在以矢量与栅格集成的空间数据模型的基础上,以B-Rep模型及其3D FDS数据结构为核心和面向对象的混凝土结构表观损伤特征的三维数据模型,并实现了原型系统基本功能。更多还原

【Abstract】 The apparent damage features are described from the aspects of apparent crack,apparent defect and structural distortion,and the shape,description and feature data model of these objects are analyzed,shape feature of apparent crack is analyzed with the method of fractal geometry,and the simplification model is provided for structural apparent cracks meeting for the similarity and precision.The ways of 3-D model construction are analyzed deeply on the basis of the spatial model composed of vector and grid,the suitable apparent features are extracted and its’ spatial data structure is also given,which is helpful for spatial analysis based on the research of B-Rep model with 3D FDS data structure that is a object oriented spatial model.更多还原