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.
|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|
|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
|Conference||2016 International Colloquium on Stability and Ductility of Steel Structures (SDSS 2016), May 30–June 1, 2016, Timisoara, Romania|
|Abbreviated title||SDSS 2016|
|Period||30/05/16 → 1/06/16|
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.