三维激光扫描结合BIM技术的古建筑三维建模应用

完备的图纸资料是古建筑加固、修缮的关键，当前大量古建筑的现存资料不能满足修缮的要求，因此对古建筑建立电子信息档案意义重大。原有建筑信息获取方法通过传统人工测绘结合CAD来实现，此方法效率低、成本高且测量过程中容易对古建筑造成二次破坏。鉴于此，依托青岛市广兴里里院，将三维激光扫描技术与BIM技术相结合，对古建筑从获取点云数据到特征线提取再到创建三维模型全过程进行研究，以期为损坏的古建筑进行恢复、再现和重建提供技术支持。研究表明，该技术能够达到建模精度，效率高，在测量过程中可避免对古建筑的破坏，可以为类似工程提供借鉴参考。

Research on the application of ancient architecture based on 3D laser scanning and BIM

The complete drawing data is the key factor to the reinforcement and restoration of ancient architecture. The existing materials of the ancient architecture can not satisfy restoration, therefore it's urgent work to establish electronic record for ancient architecture. The traditional method is usually getting electronic record by surveying and mapping combined with CAD. There are some disadvantages such as low efficiency, high cost and new damage to ancient architecture during the measurement process. Based on the problems mentioned above, taking Guangxingli inner courtyard in Qingdao as the research object, the 3D laser scanning technology is combined with the BIM technology in order to investigate point cloud acquisition, feature lines caching, 3D model creation, so as to provide technical support for the restoration and reconstruction of damaged ancient architecture. The research shows that the technology can fulfill the modeling accuracy requirement with high efficiency, what's more, new damage during the measurement process can be avoided, furthermore, it can provide a reference for similar ancient architecture restoration.