基于三维激光扫描技术的古塔变形监测

Deformation monitoring of ancient towers based on 3D laser scanning technology

为探究传统变形监测方法难以满足古塔全部形变特征的解决办法,本文以铜川市延昌塔为研究对象,采用三维激光扫描技术获取塔体点云数据,利用Geomagic软件进行建模,利用Matlab软件拟合计算塔的倾斜变化状况。结果表明:2015—2019年,延昌寺塔各层存在不同程度的扭转现象,古塔整体偏移基本上保持不变,变化趋势基本稳定。三维激光扫描技术获得多期监测数据分析得出的古塔变化趋势与实际吻合,方法可行,精度较高。研究成果以期为同类项目的开展提供参考和技术支持。

In order to explore the traditional deformation monitoring method,it is difficult to satisfy all deformation characteristics of ancient towers.This paper takes Yanchangta of Tongchuan city as the research object,uses 3 D laser scanning technology to obtain the data of the tower’s point cloud,and uses Geomagic software to model.Matlab software is used to fit the tilt variation of the tower.The results show that:from 2015 to 2019,there are different degrees of torsion in each layer of the Yanchang Temple Tower,and the overall offset of the ancient tower remains basically unchanged,and the trend of change is basically stable.3 D laser scanning technology has obtained the change trend of the ancient tower analyzed by multiple monitoring data.The method is feasible and the accuracy is high.The research results are intended to provide reference and technical support for the development of similar projects.