Bulletin of Surveying and Mapping ›› 2021, Vol. 0 ›› Issue (5): 155-158.doi: 10.13474/j.cnki.11-2246.2021.0163

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

ZHAO Yabo1,2,3, WANG Zhi1,3,4   

  1. 1. Qingdao Surveying & Mapping Institute, Qingdao 266032, China;
    2. Shandong Joint Innovation Center of Coast Survey and Monitor Engineering, Qingdao 266032, China;
    3. Qingdao Engineering Research Center of Geographical Information of Underground Space, Qingdao 266032, China;
    4. West Coast Geomatics Center of Qingdao, Qingdao 266555, China
  • Received:2021-02-22 Published:2021-05-28

Abstract: 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.

Key words: 3D scanning, point cloud, steel structure, deformation detection, fitting

CLC Number: