The Application of 3D Laser Scanning in the Comparison of Historical Building Translation

建筑平移技术越来越多地运用在城市更新背景下的历史建筑保护及再利用中，与此同时平移前后对建筑主体的对比评估显得尤为重要。本文以某实际历史建筑平移项目为例，详细阐述采用三维激光扫描技术，基于前后两次的三维点云数据模型，在建筑平面轮廓、外立面损伤识别、墙面倾斜度中的对比应用。此外，在外立面损伤识别应用中，同时引入无人机倾斜摄影进行方法比对，突出了三维激光扫描技术在外立面损伤识别应用中具有更优的适用属性，上述可为今后类似的平移比对项目提供参考。The technology of building relocation is increasingly applied in the protection and reuse of historical buildings in the context of urban renewal. Meanwhile, the comparative assessment of the building’s main structure before and after relocation is particularly important. This paper takes a real historical building relocation project as an example to elaborate on the application of 3D laser scanning technology in the comparison of building plane contours, facade damage identification, and wall inclination based on the 3D point cloud data models before and after relocation. In addition, in the application of facade damage identification, unmanned aerial vehicle oblique photography is introduced for method comparison, highlighting the superior applicability of 3D laser scanning technology in facade damage identification. The above can provide a reference for similar relocation comparison projects in the future.