Assessment of Eurocode methodologies for verification of flexural and lateral torsional buckling of prismatic beam-columns

Detalhes bibliográficos
Autor(a) principal: Anwar, Gulzaib
Data de Publicação: 2015
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10316/38641
Resumo: Dissertação de Mestrado em Engenharia Civil, Construção Metálica e Mista, apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra.
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spelling Assessment of Eurocode methodologies for verification of flexural and lateral torsional buckling of prismatic beam-columnsVigas de açoColunasFlambagem em flexãoDissertação de Mestrado em Engenharia Civil, Construção Metálica e Mista, apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra.At present, EC3 provides several methodologies for the stability verification of members and frames. Each of these methodologies has its own scope of applicability. The rules provided in clause 6.3.1 are for flexural buckling of uniform members and are based on the famous Ayrton-Perry type of formulation which is of straight-forward application and it has a clear mechanical background. Clause 6.3.2 of the Eurocode deals with lateral torsional buckling of uniform members. In this thesis focus is given to prismatic beam-columns. They can be designed using clause 6.3.3 which gives the interaction formulae for stability verification of a member subject to bending moment and axial force; as an alternative – in clause 6.3.4 the General Method is suggested. However, application of this method has been shown not to be reliable in many scientific studies – either due to the lack of mechanical consistency or due to the lack of clarification in adopting certain decisions for non-standard situations. It was the purpose of this study to review the application of existing procedures for verification of flexural and lateral-torsional buckling of simply supported prismatic beamcolumns. This included recent proposals for lateral-torsional buckling of beams (Taras, 2010), the consideration of cross-section classification along member length (Greiner et al, 2011) and safety assessment and comparison of existing procedures in EC3-1-1 by a parametric study consisting of I-shaped cross sections ranging from class 1 to class 3, with different lengths, loading types (uniaxial bending with axial force) and height over width (h/b) ratios. Results from clauses 6.3.1 to 6.3.3, general method and GMNIA were calculated for 4144 cases. In comparison with results from 6.3.1 to 6.3.3, the general method is more unsafe. Its results were found to vary with increasing cross sectional slenderness and increasing length. On the other hand results from clauses 6.3.1 to 6.3.3 are more conservative. In comparison, the general method was found to have a higher spread as indicated by the standard deviation of its results than from 6.3.1 to 6.3.3. Results from general method varied when calculated from different alternatives in the general method. When interpolation criteria was used in the general method, the results were more un-conservative in comparison to the minimum criteria. The spread of the general method included both safe and unsafe results whereas the results from 6.3.1 to 6.3.3 remained mostly conservative.2015-01-22info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesishttp://hdl.handle.net/10316/38641http://hdl.handle.net/10316/38641TID:201659565engAnwar, Gulzaibinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-01-21T17:17:23Zoai:estudogeral.uc.pt:10316/38641Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:57:45.371752Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Assessment of Eurocode methodologies for verification of flexural and lateral torsional buckling of prismatic beam-columns
title Assessment of Eurocode methodologies for verification of flexural and lateral torsional buckling of prismatic beam-columns
spellingShingle Assessment of Eurocode methodologies for verification of flexural and lateral torsional buckling of prismatic beam-columns
Anwar, Gulzaib
Vigas de aço
Colunas
Flambagem em flexão
title_short Assessment of Eurocode methodologies for verification of flexural and lateral torsional buckling of prismatic beam-columns
title_full Assessment of Eurocode methodologies for verification of flexural and lateral torsional buckling of prismatic beam-columns
title_fullStr Assessment of Eurocode methodologies for verification of flexural and lateral torsional buckling of prismatic beam-columns
title_full_unstemmed Assessment of Eurocode methodologies for verification of flexural and lateral torsional buckling of prismatic beam-columns
title_sort Assessment of Eurocode methodologies for verification of flexural and lateral torsional buckling of prismatic beam-columns
author Anwar, Gulzaib
author_facet Anwar, Gulzaib
author_role author
dc.contributor.author.fl_str_mv Anwar, Gulzaib
dc.subject.por.fl_str_mv Vigas de aço
Colunas
Flambagem em flexão
topic Vigas de aço
Colunas
Flambagem em flexão
description Dissertação de Mestrado em Engenharia Civil, Construção Metálica e Mista, apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra.
publishDate 2015
dc.date.none.fl_str_mv 2015-01-22
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10316/38641
http://hdl.handle.net/10316/38641
TID:201659565
url http://hdl.handle.net/10316/38641
identifier_str_mv TID:201659565
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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