Contenuto in:
Capitolo

Construction of a Practical Finite Element Model from Point Cloud Data for an Existing Steel Truss Bridge

  • Nao Hidaka
  • Naofumi Hashimoto
  • Tetsuya Nonaka
  • Makoto Obata
  • Kazuya Magoshi
  • Ei Watanabe

The objective of this paper is to develop a semi-automatic method for constructing a practical finite element model from point cloud data of an entire span of a through-type steel truss bridge. In the first step, we introduced practical finite element models for truss bridges based on structural experiments and numerical analyses of a sway bracing located at the end support. We also proposed a basic method for semi-automatically constructing a finite element model of a sway bracing using point cloud data. This method was then extended for an entire of steel truss bridge. The point cloud data is converted to individual data structures which, in turn, are connected to construct a whole structure. The main members, such as upper chords, lower chords, and diagonals, are converted to fiber-based models by automatically creating central axis lines and cross-sections from the point cloud. The slab is converted to shell models by obtaining surfaces and thickness from the point cloud. The effectiveness of the proposed method was confirmed by comparing the analysis results from the finite element model manually created from the design drawing (drawing-model) with those obtained from the model generated by this method (point-cloud-model). The proposed method is more efficient than reading drawings and creating the models manually, and it was confirmed that the point-cloud-model shows response values close to those of the drawing-model within the design load. However, the reproducibility of the response values with more than the design load remains an issue, which can be solved by tuning plate thickness

  • Keywords:
  • Point Cloud,
  • Fiber-based model,
  • Steel Truss Bridge,
  • Structural Analysis Model,
  • Semi-Automatic Method,
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Nao Hidaka

Nagoya Institute of Technology, Japan

Naofumi Hashimoto

Nagoya Institute of Technology, Japan

Tetsuya Nonaka

Nagoya Institute of Technology, Japan

Makoto Obata

Nagoya Institute of Technology, Japan

Kazuya Magoshi

Earthquake Engineering Research Center Inc., Japan

Ei Watanabe

Aichi Prefectural Government, Japan

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  2. Suzuki, S., Miyamori, Y., Saito, T., Yamazaki, T., Dambiibaljir, M., and Mikami, S., (2019). Automated FE Modeling From 3D Point Cloud Model Of A Damaged Steel Structural Member (in Japanese), Journal of Japan Society of Civil Engineers F3, 75(2), I_141-I_149. DOI: 10.2208/jscejcei.75.2_I_141
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  4. Hidaka, N., Hashimoto, N., Nakamura, M., Magoshi, K., Nonaka, T., Obata.M, (2023). Construction analysis model of steel bridge by using point cloud data and accuracy verification (in Japanese), Journal of structural engineering. A, 69A, 637-647. DOI: 10.11532/structcivil.69A.637
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  • Anno di pubblicazione: 2023
  • Pagine: 1147-1158

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  • Anno di pubblicazione: 2023

Informazioni sul capitolo

Titolo del capitolo

Construction of a Practical Finite Element Model from Point Cloud Data for an Existing Steel Truss Bridge

Autori

Nao Hidaka, Naofumi Hashimoto, Tetsuya Nonaka, Makoto Obata, Kazuya Magoshi, Ei Watanabe

DOI

10.36253/979-12-215-0289-3.114

Opera sottoposta a peer review

Anno di pubblicazione

2023

Copyright

© 2023 Author(s)

Licenza d'uso

CC BY-NC 4.0

Licenza dei metadati

CC0 1.0

Informazioni bibliografiche

Titolo del libro

CONVR 2023 - Proceedings of the 23rd International Conference on Construction Applications of Virtual Reality

Sottotitolo del libro

Managing the Digital Transformation of Construction Industry

Curatori

Pietro Capone, Vito Getuli, Farzad Pour Rahimian, Nashwan Dawood, Alessandro Bruttini, Tommaso Sorbi

Opera sottoposta a peer review

Anno di pubblicazione

2023

Copyright

© 2023 Author(s)

Licenza d'uso

CC BY-NC 4.0

Licenza dei metadati

CC0 1.0

Editore

Firenze University Press

DOI

10.36253/979-12-215-0289-3

eISBN (pdf)

979-12-215-0289-3

eISBN (xml)

979-12-215-0257-2

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Proceedings e report

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2704-601X

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2704-5846

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