INCREASE IN LATERAL–TORSIONAL BUCKLING RESISTANCE OF BEAMS BY APPLICATION OF STIFFENERS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F19%3APU133754" target="_blank" >RIV/00216305:26110/19:PU133754 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.dec.uc.pt/corass2019/downloads/CoRASS2019_proceedings.pdf" target="_blank" >https://www.dec.uc.pt/corass2019/downloads/CoRASS2019_proceedings.pdf</a>

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

INCREASE IN LATERAL–TORSIONAL BUCKLING RESISTANCE OF BEAMS BY APPLICATION OF STIFFENERS

Popis výsledku v původním jazyce

The paper focuses on possible types of strengthening of steel beams. Various kinds and numbers of stiffeners, haunches, doublers etc. may be applied to current steel beams. The effectivity varies greatly and must be evaluated in the design. Lateral-torsional buckling is often a very important factor determining the beam resistance. The critical buckling load of plain beams with clearly defined boundary conditions are thoroughly investigated and their design is codified. However, the finite element method finds its use for complicated geometry and semi-rigid supports. Newly developed software using CBFEM (Component Based Finite Element Method) dedicated to a design of steel members including their joints is introduced. Boundary conditions are modelled and there is no need to estimate. Two types of analyzing beam stability are presented: General method, using a combination of materially non-linear analysis and linear buckling analysis, and geometrically and materially non-linear analysis with imperfections. Both analyses show that inclined stiffeners are more effective than vertical transverse stiffeners. The most effective is the first pair of stiffeners and their effectivity decreases with their added numbers. Other dependencies of longitudinal and transverse stiffeners are also quantified in the paper.

Název v anglickém jazyce

INCREASE IN LATERAL–TORSIONAL BUCKLING RESISTANCE OF BEAMS BY APPLICATION OF STIFFENERS

Popis výsledku anglicky

The paper focuses on possible types of strengthening of steel beams. Various kinds and numbers of stiffeners, haunches, doublers etc. may be applied to current steel beams. The effectivity varies greatly and must be evaluated in the design. Lateral-torsional buckling is often a very important factor determining the beam resistance. The critical buckling load of plain beams with clearly defined boundary conditions are thoroughly investigated and their design is codified. However, the finite element method finds its use for complicated geometry and semi-rigid supports. Newly developed software using CBFEM (Component Based Finite Element Method) dedicated to a design of steel members including their joints is introduced. Boundary conditions are modelled and there is no need to estimate. Two types of analyzing beam stability are presented: General method, using a combination of materially non-linear analysis and linear buckling analysis, and geometrically and materially non-linear analysis with imperfections. Both analyses show that inclined stiffeners are more effective than vertical transverse stiffeners. The most effective is the first pair of stiffeners and their effectivity decreases with their added numbers. Other dependencies of longitudinal and transverse stiffeners are also quantified in the paper.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

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 statě ve sborníku

3rd International Conference on Recent Advances in Nonlinear Design Resilience and Rehabilitation of Structures

ISBN

9789892098388

ISSN

—

e-ISSN

—

Počet stran výsledku

9

Strana od-do

187-195

Název nakladatele

University of Coimbra, INESC‐C, Portugal

Místo vydání

Coimbra

Místo konání akce

Coimbra

Datum konání akce

16. 10. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—