Construction of 3D Architectural Design Model Based on Computer CAD-3D

With the continuous progress of computer technology, CAD-3D design has become a unique new model in the field of architectural design. It can not only realize the optimization and innovation of building structure and function, but also enhance the use value of buildings to a considerable extent. This paper firstly analyzes and studies the process of constructing two-dimensional internal business map, and then discusses the fusion relationship between CAD software and traditional software, as well as their respective characteristics and advantages. Then this paper uses computer graphics editing technology to carefully process all kinds of information contained in the three-dimensional model to meet the needs of users. Finally, the virtual building template is drawn and vividly displayed through CAD, and the performance of the model is tested and analyzed. The test results show that the measurement data of the model building is evenly distributed between -1 and 1. The measurement data range of the actual building is between -1 and 1.5, and the error of the detection data is smaller than that of the actual data, which indicates that the accuracy of the model is quite high, showing that the model can accurately simulate and reproduce to ensure the consistency and reliability between the design and the actual building.