| 独立模型法点云拼接在建筑倾斜监测中的应用 |
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| 作者姓名： | 王智超 刘尚国 郑硕 |
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| 作者单位： | 山东科技大学测绘科学与工程学院 ,山东 青岛 ,266590;山东科技大学测绘科学与工程学院 ,山东 青岛 ,266590;山东省基础地理信息与数字化技术重点实验室 ,山东 青岛 ,266590;中国科学院测量与地球物理研究所 ,湖北 武汉 ,430060 |
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| 基金项目： | 通用技术集团工程设计有限公司研发项目(RD80)。 |
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| 摘 要： | 针对建造结构复杂高层建筑倾斜监测需求,介绍了一种基于地面三维激光扫描仪,结合独立模型法多站点云拼接的高层建筑倾斜变形的监测方案,研究其点云拼接原理、棱线提取和监测技术路线。通过拟合标靶球点云球心的三维坐标,与同名点控制坐标进行坐标转换,实现点云拼接。提取建筑点云模型两平面的交线即建筑物棱线,计算倾斜度。工程实践表明以独立模型法作为点云拼接的理论基础,点位空间误差为MS=1.743 mm,满足建筑物变形观测要求。可实现对复杂高层建筑倾斜监测,相比于传统倾斜监测方法的外业工作量可缩短近60%,且精度高,可靠性强。
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| 关 键 词： | 倾斜监测 三维激光扫描 点云拼接 球心拟合 坐标转换 |
Independent Model Method of Point Cloud Splicing and Its Application in Building Tilt Monitoring |
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| Authors: | WANG Zhichao LIU Shangguo ZH ENG Shuo |
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| Institution: | (Geomatics College,Shandong University of Science&Technology,Qingdao 266590,China;Shandong Provincial Key Laboratory of Geomatics and Digital Technology,Qingdao 266590,China;Institute of Geodesy and Geophysics,Chinese Academy of Sciences,Wuhan 430060,China) |
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| Abstract: | Aiming at the needs of tilt monitoring of high-rise buildings with complex structures,this paper introduces a monitoring scheme of tilt deformation of high-rise buildings based on three-dimensional laser scanner on the ground and combined with independent model method of multi-site cloud Mosaic,and studies its point cloud Mosaic principle,prism line extraction and monitoring technology route.By fitting the three-dimensional coordinates of the center of the target spherical point cloud,coordinate transformation is carried out with the control coordinates of the same name point to realize point cloud splicing.The intersection lines of the two planes of the building point cloud model are extracted and the inclination is calculated.Engineering practice shows that the independent model method is used as the theoretical basis for point cloud splicing,and the point space error is MS=1.743 mm,which meets the requirements of building deformation observation.It can realize the tilt monitoring of complex high-rise buildings.Compared with the traditional tilt method,the field workload can be shortened by nearly 60%,with high precision and strong reliability. |
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| Keywords: | tilt monitoring 3D laser scanning point cloud splicing spherical fitting coordinate transformation |
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