基于地基激光雷达的塔式古建形变分析方法  

Deformation Analysis Method of Ancient Pagoda Based on Ground Lidar

作　　者：李登科 郭明 王新征[4] 乔禹 Li Dengke*;Guo Ming;Wang Xinzheng;Qiao Yu(School of Geomatics and Urban Spatial Informatics,Beijing University of Civil Engineering and Architecture,Beijing,China;Representative Architecture and Ancient Architecture Database Engineering Research Center of Ministry of Education,Beijing,China;Beijing Key Laboratory of Architectural Heritage Monitoring,Beijing,China;Chinese Academy of Cultural Heritage,Beijing,China;CIGIS(CHINA)LIMITED,Beijing,China)

机构地区：[1]北京建筑大学测绘与城市空间信息学院,北京 [2]代表性建筑与古建筑数据库教育部工程研究中心,北京 [3]建筑遗产精细重构与健康监测北京市重点实验室,北京 [4]中国文化遗产研究院,北京 [5]建设综合勘察研究设计院有限公司,北京

出　　处：《科学技术创新》2023年第9期9-12,共4页Scientific and Technological Innovation

基　　金：国家自然科学基金项目(41971350,42171416)。

摘　　要：为实现塔式古建筑全部特征的定量形变分析,以传统单点高精度测量方法作为精度控制,采用两种不同测程的地基激光雷达获取塔式古建筑的内外多视点云数据,基于坐标转换和可迭代整体配准算法,得到绝对坐标系下的整体点云模型。点云数据处理包括单柱点云的提取、整体纵向剖切和单层横向剖切,使用三维建模软件和Auto CAD绘图平台,获取单柱几何信息以及绘测出塔体线剖图和各层平面图。以杭州某古塔的形变分析为例,验证了该方法对塔式古建筑定量形变分析的可行性与准确性。In order to realize the quantitative deformation analysis of all features of the tower,the traditional single-point high-precision measurement method is used as the accuracy control,and two different ranges of ground-based LiDAR are used to obtain the internal and external multi-view point cloud data of the tower,based on the coordinate conversion and iterative overall alignment algorithm to obtain the overall point cloud model in absolute coordinate system.The point cloud data processing includes single column point cloud extraction,overall longitudinal sectioning and single-story transverse sectioning,using 3D modeling software and Auto CAD drawing platform to obtain single column geometric information and plot the tower body line profile and each floor plan.Taking the deformation analysis of an ancient pagoda in Hangzhou as an example,the feasibility and accuracy of the method for quantitative deformation analysis of pagoda-type ancient buildings are verified.

关 键 词：点云 地基激光雷达 坐标转换 塔式古建筑 形变分析 

分 类 号：TU973.2[建筑科学—结构工程]