Publication detail

Strengthening of Steel Beam by Inclined Stiffeners

VILD, M. BAJER, M. BARNAT, J. HOLOMEK, J.

Original Title

Strengthening of Steel Beam by Inclined Stiffeners

Type

conference paper

Language

English

Original Abstract

There are several ways how to increase the bending resistance of a beam. The simplest method is to increase the cross-section size. But this method may not be the most efficient or feasible, especially in the case of an existing building in need of strengthening. In this paper, the method of strengthening a beam by welded inclined stiffeners is investigated. The beam is susceptible to lateral-torsional buckling. A sensitivity study is prepared for the beam length and cross-section size, boundary conditions, and the number and position of stiffeners. A validated numerical model using Component-based Finite Element Method is used. The model combines shell elements for analyzed member and bar elements for related members. The joints are included in the model. Bolts and welds are simulated by special nonlinear elements with resistance based on codes. Validation and verification of the model is presented. It is based on the experiment performed at AdMaS center at Brno University of Technology of a beam with semi-rigid joints loaded by three-point bending. The model is verified by comparing critical buckling load and buckling resistances of columns and beams with clear boundary conditions. The results are also compared to those by another general finite element software, ANSYS and ABAQUS.

Keywords

CBFEM; GMNIA; Lateral-torsional buckling; Stiffener; Strengthening; Verification and validation

Authors

VILD, M.; BAJER, M.; BARNAT, J.; HOLOMEK, J.

Released

14. 9. 2022

Publisher

Wiley

ISBN

2509-7075

Periodical

ce/papers

Year of study

5

Number

4

State

Federal Republic of Germany

Pages from

258

Pages to

263

Pages count

6

URL

https://onlinelibrary.wiley.com/doi/full/10.1002/cepa.1754

BibTex

@inproceedings{BUT179480,
  author="Martin {Vild} and Miroslav {Bajer} and Jan {Barnat} and Josef {Holomek}",
  title="Strengthening of Steel Beam by Inclined Stiffeners",
  booktitle="Special issue: SDSS 2022",
  year="2022",
  journal="ce/papers",
  volume="5",
  number="4",
  pages="258--263",
  publisher="Wiley",
  doi="10.1002/cepa.1754",
  issn="2509-7075",
  url="https://onlinelibrary.wiley.com/doi/full/10.1002/cepa.1754"
}