Research on BIM Model Construction Method of Cable Engineering Based on Parametric Modeling

The characteristics of 3D digital model of cable engineering are analyzed. In view of the difference of the model in the infrastructure operation and inspection stage. For the necessity of local update, the parametric modeling method is analyzed to update and manage the model. The model is saved in the form of family library, including cable engineering model with adjustable parameters and prefabricated model that needs manual adjustment. The model is constructed as a whole by combining the location, orientation and other attributes of each model unit in the form of assembly. The proposed method improve the efficiency of model display and rendering, and can realistically display the site conditions.