Research and Application of Key Technologies for Three-dimensional Drawing Based on BIM Model
To solve the issue of generating 3D forward-designed drawings in BIM models,this study systematically investigated essential drawing and annotation techniques through secondary development on the MicroStation 3D design platform.The approach involved extracting model cross-sections at designated cutting positions and 3D models within the section view scope to facilitate the creation of profile map backgrounds.Material attribute information was associated with profile maps,and automated profile map filling was achieved with a predefined fill symbol library.A dynamic linkage was achieved by establishing a correlation between customized data structures within models and drawings,allowing for mutu-al updates between drawings and models.Adjusting the display style of invisible edges within the forward view range of the section view resulted in the presentation of dashed lines for unseen borders in 2D section views.The development also encompassed rapid annotation of elevations,slopes,station numbers,and other parameters for 2D and 3D drawings,as well as a swift frame invocation tool,ensuring expeditious diagram generation.Practical project applications showcased a noticeable enhancement in the efficiency of generating 2D drawings based on BIM models.The outcomes demonstrated applicability to batch slicing of linear and polyline-type section-line drawings.This method met the simultaneous slicing requirements for structural,terrain,and geological models.It catered to diverse scaling demands of drawing slices and satisfied the need for bulk updates of drawings after model modifications.The research methodology and software devel-opment approach offers valuable insights for similar projects,serving as a reference for future endeavors.
万方数据
维普
