Investigation of European flexural and lateral torsional buckling interaction.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F19%3APU135549" target="_blank" >RIV/00216305:26110/19:PU135549 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.engstruct.2019.05.045" target="_blank" >https://doi.org/10.1016/j.engstruct.2019.05.045</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jcsr.2019.01.026" target="_blank" >10.1016/j.jcsr.2019.01.026</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Investigation of European flexural and lateral torsional buckling interaction.

Popis výsledku v původním jazyce

The accuracy of the interaction methods for combined flexural and lateral torsional buckling are investigated using statistical data, which has become available after the introduction of Eurocode EN1993-1-1:2005. The freely available statistical data for geometric and material parameters for standard profiles are quite limited and as background documents are based on IPE 160 profile, our investigations are also based on this profile. A semi-probabilistic first order reliability approach is used and the resistance of the member is treated as a stochastic variable. Latin Hypercube Sampling is used for population sampling. This simulation approach for determination of the buckling interaction surface has not previously been reported. The Eurocode handles buckling interaction through two interaction equations. These equations include a number of interaction factors. The calculation of the interaction factors may be performed by one of two methods, referred to as Method 1 and Method 2. Both interaction methods make use of the buckling curves for determination of reduction factors for both flexural and lateral torsional buckling. The flexural buckling curve is well calibrated; however, this is not the case for lateral torsional buckling. It turns out that the methods may lead to unsafe designs when a lateral torsionally slender column is loaded predominantly in bending. The present paper investigates how the Eurocode emulate the complex behavior also for very slender beam-columns. The 0.1% quantile interaction curves are compared to those resulting from the use of Method 1 and Method 2.

Název v anglickém jazyce

Investigation of European flexural and lateral torsional buckling interaction.

Popis výsledku anglicky

The accuracy of the interaction methods for combined flexural and lateral torsional buckling are investigated using statistical data, which has become available after the introduction of Eurocode EN1993-1-1:2005. The freely available statistical data for geometric and material parameters for standard profiles are quite limited and as background documents are based on IPE 160 profile, our investigations are also based on this profile. A semi-probabilistic first order reliability approach is used and the resistance of the member is treated as a stochastic variable. Latin Hypercube Sampling is used for population sampling. This simulation approach for determination of the buckling interaction surface has not previously been reported. The Eurocode handles buckling interaction through two interaction equations. These equations include a number of interaction factors. The calculation of the interaction factors may be performed by one of two methods, referred to as Method 1 and Method 2. Both interaction methods make use of the buckling curves for determination of reduction factors for both flexural and lateral torsional buckling. The flexural buckling curve is well calibrated; however, this is not the case for lateral torsional buckling. It turns out that the methods may lead to unsafe designs when a lateral torsionally slender column is loaded predominantly in bending. The present paper investigates how the Eurocode emulate the complex behavior also for very slender beam-columns. The 0.1% quantile interaction curves are compared to those resulting from the use of Method 1 and Method 2.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA17-01589S" target="_blank" >GA17-01589S: Pokročilé výpočetní a pravděpodobnostní modelování ocelových konstrukcí s ohledem na únavové poškození</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Journal of Constructional Steel Research

ISSN

0143-974X

e-ISSN

1873-5983

Svazek periodika

2019

Číslo periodika v rámci svazku

156

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

17

Strana od-do

105-121

Kód UT WoS článku

000464481400010

EID výsledku v databázi Scopus

2-s2.0-85061059373