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Stabilization of thin‐walled profiles under uplift loads

Stabilization of thin‐walled profiles under uplift loads EDITOR’S RECOMMENDATIONS Sandwich panels are able to support their sub-structure against failure due to loss of stability. Especially for thin-walled Z-pro- files used in lightweight metal construc- tion as purlins, customary span-lengths often only can be reached by taking into account stabilization effects, which can be described as a combination of dia- phragm and torsional restraint. However, for the load combination of dead weight and wind suction, the diaphragm is usual- ly located on the flange under tensile stress, which means that only marginally stabilization effects can be added to the system. In addition, acc. to the German NA to DIN EN 1993-1-3, no stabilization due to a torsional restraint may be used Mechanical model to descri- for the aforementioned load combina- be the connection stiffness tion. Recent investigations showed on the one hand that the reduction of the tor- the past. Thus, a qualified estimation of Krieglstein, T.; Lener, G.; Naujoks, B.; the applicable torsional restraint under Kühn, B. (2022) Stabilisierung von Z- sional restraint under uplifting loads stat- ed in the literature is true, but on the oth- uplifting loads is possible, based on com- Kantprofilen unter abhebenden Lasten. er hand the investigations also provides a ponent tests and FE-calculations and de- Stahlbau 91, H. 3, S. 162–171. rived from a mechanical model. The pa- https://doi.org/10.1002/stab.202100100 quantification of this reduction others than the rough engineering assumptions per describes the scientific background as of 100 % to 50 % reduction often used in well as the mechanical model. 120 Steel Construction 15 (2022), No. 2 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Steel Construction: Design and Research Wiley

Stabilization of thin‐walled profiles under uplift loads

Steel Construction: Design and Research , Volume 15 (2) – May 1, 2022

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Publisher
Wiley
Copyright
© 2022 Ernst & Sohn GmbH
ISSN
1867-0520
eISSN
1867-0539
DOI
10.1002/stco.202270204
Publisher site
See Article on Publisher Site

Abstract

EDITOR’S RECOMMENDATIONS Sandwich panels are able to support their sub-structure against failure due to loss of stability. Especially for thin-walled Z-pro- files used in lightweight metal construc- tion as purlins, customary span-lengths often only can be reached by taking into account stabilization effects, which can be described as a combination of dia- phragm and torsional restraint. However, for the load combination of dead weight and wind suction, the diaphragm is usual- ly located on the flange under tensile stress, which means that only marginally stabilization effects can be added to the system. In addition, acc. to the German NA to DIN EN 1993-1-3, no stabilization due to a torsional restraint may be used Mechanical model to descri- for the aforementioned load combina- be the connection stiffness tion. Recent investigations showed on the one hand that the reduction of the tor- the past. Thus, a qualified estimation of Krieglstein, T.; Lener, G.; Naujoks, B.; the applicable torsional restraint under Kühn, B. (2022) Stabilisierung von Z- sional restraint under uplifting loads stat- ed in the literature is true, but on the oth- uplifting loads is possible, based on com- Kantprofilen unter abhebenden Lasten. er hand the investigations also provides a ponent tests and FE-calculations and de- Stahlbau 91, H. 3, S. 162–171. rived from a mechanical model. The pa- https://doi.org/10.1002/stab.202100100 quantification of this reduction others than the rough engineering assumptions per describes the scientific background as of 100 % to 50 % reduction often used in well as the mechanical model. 120 Steel Construction 15 (2022), No. 2

Journal

Steel Construction: Design and ResearchWiley

Published: May 1, 2022

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