基于三维激光点云的钢结构变形分析

钢结构变形是工程、工业领域常见问题,若变形超过设计允许值,将影响工程的正常实施及工业的正常运转。采用全站仪等传统方式检测钢结构变形,不仅效率低,且难以全面、精确地反映钢结构的空间整体变形情况。本文以一个海上钻井平台钢结构变形为例,介绍采用三维激光扫描仪进行钢结构变形检测分析的方法,通过对外业采集的点云进行滤波、分割处理,并基于钢结构设计模型对三维点云进行拟合处理,根据实测的三维点云与拟合模型进行碰撞分析,即可得到钢结构的空间变形情况。

Analysis of steel structure deformation based on 3D laser point cloud

The deformation of steel structure is a common problem in engineering and industrial fields. If the deformation exceeds the allowable value of design, it will affect the normal implementation of engineering and the normal operation of industry. Traditional methods such as total station are used to detect the deformation of steel structure.But it is not only inefficient, but also difficult to fully and accurately reflect the overall deformation of steel structure. Taking the deformation of steel structure of a offshore drilling platform as an example, this paper introduces the method of detecting and analyzing the deformation of steel structure by using 3D laser scanner, filters and divides the point cloud collected in the field, and fits the 3D point cloud based on the steel structure design model.According to the collision analysis of the measured 3D point cloud and the fitting model, the spatial deformation of the steel structure can be obtained.