Design Procedure for Stainless Steel Slender I Section Members in Bending

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F22%3A00360022" target="_blank" >RIV/68407700:21110/22:00360022 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/epdf/10.1002/cepa.1790" target="_blank" >https://onlinelibrary.wiley.com/doi/epdf/10.1002/cepa.1790</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/cepa.1790" target="_blank" >10.1002/cepa.1790</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Design Procedure for Stainless Steel Slender I Section Members in Bending

Popis výsledku v původním jazyce

Stainless steel welded I sections are used in structures not as often as cold-rolled hollow sections or laser-welded sections. But the design rules for both local buckling of very slender sections as well as lateral torsional buckling reduction factors are based on a very limited experimental and numerical research. For this reason, a new research covering these phenomena was carried out at the Czech Technical University in Prague. The contribution shows a numerical parametric study of welded slender stainless steel I-section beams as a follow-up of previous experimental program. The numerical study based on a validated FE model was carried out to develop a procedure for LTB of I section beams. The proposal follows the procedure of Taras, which is part of prEN 1993-1-1:2019, where modified constants are proposed. It was also found, that the local buckling reduction factor used in EN 1993-1-4:2006 may be unsafe for ordinary welded sections. The procedure in the Eurocode was developed mainly for SHS/RHS and laser-welded sections. These fabrication methods result in significantly lower geometrical imperfections and slightly lower residual stresses than common welding methods (e.g. MIG). Therefore, a safe procedure proposal for Class 4 welded section resistance was also provided, despite not being the focus of the paper.

Název v anglickém jazyce

Design Procedure for Stainless Steel Slender I Section Members in Bending

Popis výsledku anglicky

Stainless steel welded I sections are used in structures not as often as cold-rolled hollow sections or laser-welded sections. But the design rules for both local buckling of very slender sections as well as lateral torsional buckling reduction factors are based on a very limited experimental and numerical research. For this reason, a new research covering these phenomena was carried out at the Czech Technical University in Prague. The contribution shows a numerical parametric study of welded slender stainless steel I-section beams as a follow-up of previous experimental program. The numerical study based on a validated FE model was carried out to develop a procedure for LTB of I section beams. The proposal follows the procedure of Taras, which is part of prEN 1993-1-1:2019, where modified constants are proposed. It was also found, that the local buckling reduction factor used in EN 1993-1-4:2006 may be unsafe for ordinary welded sections. The procedure in the Eurocode was developed mainly for SHS/RHS and laser-welded sections. These fabrication methods result in significantly lower geometrical imperfections and slightly lower residual stresses than common welding methods (e.g. MIG). Therefore, a safe procedure proposal for Class 4 welded section resistance was also provided, despite not being the focus of the paper.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

<a href="/cs/project/GA20-24563S" target="_blank" >GA20-24563S: Metody globální analýzy pro štíhlé konstrukce z korozivzdorných ocelí a dalších ocelí s nelineárním pracovním diagramem</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

The International Colloquium on Stability and Ductility of Steel Structures (SDSS 2022)

ISBN

—

ISSN

2509-7075

e-ISSN

2509-7075

Počet stran výsledku

8

Strana od-do

555-562

Název nakladatele

Ernst & Sohn

Místo vydání

Berlin

Místo konání akce

Aveiro

Datum konání akce

14. 9. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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