Automatic 3D modelling of metal frame connections from LiDAR data for structural engineering purposes |
| |
| Institution: | 1. Department of Materials Engineering, Applied Mechanics and Construction, School of Industrial Engineering, University of Vigo, C.P. 36208 Vigo, Spain;2. Department of Natural Resources and Environmental Engineering, School of Mining Engineering, University of Vigo, C.P. 36310 Vigo, Spain;3. Department of Mechanical Engineering, Heat Engines & Machines and Fluids, School of Industrial Engineering, University of Vigo, C.P. 36200 Vigo, Spain;1. Department of Materials Engineering, Applied Mechanics and Construction, School of Industrial Engineering, University of Vigo, C.P. 36208 Vigo, Spain;2. ISISE, Department of Civil Engineering, University of Minho, 4800-058 Guimarães, Portugal;1. EA 4592 G&E, ENSEGID, University of Bordeaux, 1 Allée F. Daguin, 33607 Pessac Cedex, France;2. INRA, UMR1391 ISPA, 33140 Villenave d’Ornon, France;1. Geodetic Institute, Leibniz Universität Hannover, Hannover 30167, Germany;2. Jiangsu University of Science and Technology, Zhenjiang City 212003, Jiangsu Province, PR China |
| |
| Abstract: | The automatic generation of 3D as-built models from LiDAR data is a topic where significant progress has been made in recent years. This paper describes a new method for the detection and automatic 3D modelling of frame connections and the formation of profiles comprising a metal frame from LiDAR data. The method has been developed using an approach to create 2.5D density images for subsequent processing using the Hough transform. The structure connections can be automatically identified after selecting areas in the point cloud. As a result, the coordinates of the connection centre, composition (profiles, size and shape of the haunch) and direction of their profiles are extracted. A standard file is generated with the data obtained from the geometric and semantic characterisation of the connections. The 3D model of connections and metal frames, which are suitable for processing software for structural engineering applications, are generated automatically based on this file. The algorithm presented in this paper has been tested under laboratory conditions and also with several industrial portal frames, achieving promising results. Finally, 3D models were generated, and structural calculations were performed. |
| |
| Keywords: | Automatic 3D modelling LiDAR Point cloud Structural analysis Metal frame |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
