Journal of Japan Society of Civil Engineers, Ser. F3 (Civil Engineering Informatics)
Online ISSN : 2185-6591
ISSN-L : 2185-6591
Special Issue (Paper)
AUTOMATED FE MODELING FROM 3D POINT CLOUD MODEL OF A DAMAGED STEEL STRUCTURAL MEMBER
Sanae SUZUKIYasunori MIYAMORITakehiko SAITOTomoyuki YAMAZAKIMunkhjargal DAMBIIBALJIRShuichi MIKAMI
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2019 Volume 75 Issue 2 Pages I_141-I_149

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Abstract

 The recent development of the SfM technique is improving the efficiency of infrastructure management and quantitative evaluation of structural members using such technique is ongoing problems. In this paper, a dense point cloud model of a damaged T-shape steel structural member was constructed from still digital photographs. The 3D point cloud model was converted to an FE model by downsampling of the dense cloud in 3D lattice space and continuous 2D Delaunay triangulation of each section of the member. The reference FE model based on the measured dimension of the specimen was also composed. From comparisons among static loading test of the specimen, and FE analyses of both the point cloud FE model and the reference FE model. Fundamental availability of the FE modeling from SfM was confirmed that the distribution of stress in the web of the steel member consistent with the reference FE model. For the future study, the modeling accuracy of the thickness of the web plate in the point cloud FE model needs to be improved and the modeling algorithm is also modified to avoid defectiveness of solid elements.

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© 2019 Japan Society of Civil Engineers
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