### Abstract

To perform geometrically and materially nonlinear analyses including imperfec-tions for steel beam lateral torsional buckling, the size and shape of the geometric imperfec-tion can be obtained from EN 1993-1-1. The shape is prescribed as an initial bow along the weak axis of the section, excluding torsion of the cross-section. The shape of the imperfection can alternatively be taken equal to the lateral torsional buckling mode, including torsion. Sev-eral tables and formulas exist to determine the size of the imperfection. Different imperfection approaches were applied in finite element simulations to evaluate the lateral torsional nonlin-ear buckling resistances and to compare them to the results obtained with design rules.

Original language | English |
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Title of host publication | Proceedings of the International Colloquium on Stability and Ductility of Steel Structures |

Editors | Dan Dubina, Viorel Ungureanu |

Place of Publication | Timisoara |

Publisher | Wiley Ernst & Sohn |

Pages | 549-556 |

Number of pages | 8 |

ISBN (Print) | ISBN 978-92-9147-133-1 |

Publication status | Published - 2016 |

Event | 2016 International Colloquium on Stability and Ductility of Steel Structures (SDSS 2016), May 30–June 1, 2016, Timisoara, Romania - Timisoara, Romania Duration: 30 May 2016 → 1 Jun 2016 http://www.ct.upt.ro/sdss2016/ |

### Conference

Conference | 2016 International Colloquium on Stability and Ductility of Steel Structures (SDSS 2016), May 30–June 1, 2016, Timisoara, Romania |
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Abbreviated title | SDSS 2016 |

Country | Romania |

City | Timisoara |

Period | 30/05/16 → 1/06/16 |

Internet address |

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## Cite this

Snijder, H. H., van der Aa, R. P., Hofmeyer, H., & van Hove, B. W. E. M. (2016). Design imperfections for steel beam lateral torsional buckling. In D. Dubina, & V. Ungureanu (Eds.),

*Proceedings of the International Colloquium on Stability and Ductility of Steel Structures*(pp. 549-556). Timisoara: Wiley Ernst & Sohn.