基于三维激光扫描测绘技术的BIM逆向建筑建模方法研究

Research on BIM Reverse Building Modeling Method Based on 3D Laser Scanning Mapping Technology

简要介绍了三维激光扫描测绘技术BIM逆向建模流程和理论,重点研究了参数族创建附属构建的方法,并以此建立完整的从点云数据采集、处理、传递到模型建立的BIM逆向建筑建模流程。为验证本文研究的BIM逆向建模方法,利用三维激光扫描技术采集某高校教学楼点云数据并处理,利用Revit建模软件构建了教学楼BIM模型。最后采用内外业结合测量方法,评价了三维模型精度,结果表明,各测量点误差结果较小,满足建筑实景三维模型建模需求,可以为建筑改造维护工作提供参考。

Three-dimensional laser scanning technology can be used to obtain the point cloud data of the building surface by firing laser beams at the building.Accurate point cloud data can be used to realize reverse building modeling in BIM software,that is,to form a complete building model through the model of important building components.Based on this,a reverse building modeling method based on 3D laser scanning is proposed in this paper.Based on point cloud data,BIM reverse building modeling process,reverse modeling of important building components and establishment of point cloud BIM model“family”two important reverse building modeling links are described.Finally,taking actual buildings as an example,the practical application effect of 3D laser scanning mapping technology is studied.