Comparative review of possible alternatives for performing safety assessment of design rules for steel structures

Detalhes bibliográficos
Autor(a) principal: Tankova, Trayana Stoykova
Data de Publicação: 2014
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10316/38527
Resumo: Dissertação de Mestrado em Construção Metálica e Mista apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra
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spelling Comparative review of possible alternatives for performing safety assessment of design rules for steel structuresEstruturas metálicasSegurança de estruturasDissertação de Mestrado em Construção Metálica e Mista apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbrasem informaçãoCurrently, safety assessment is not consistently considered throughout Eurocode 3, mainly due to lack of guidance and existing databanks containing information on distribution of relevant basic variables and steel properties. In addition, some rules are not thoroughly validated, leading to higher uncertainties. In establishing the partial safety factor - γM of a design procedure, scatter related to material and geometrical properties may be isolated from resistance model. Simplified safety assessment procedures are analysed and further tested in which the basic variables are assumed independent from each other, with basis on EN 1990 safety assessment procedure. In this dissertation, firstly, a theoretical overview is proposed in order to introduce the basic principles in the probability theory; secondly, the basic principles of design codes are presented, focusing on the current European design codes EN 1990 to EN 1999. The design methodologies are listed and their background is discussed, and furthermore focus is given to the procedures applicable to Eurocode 3. The safety assessment procedure, given in Annex D of EN 1990 is also presented and its theoretical background is clarified. Subsequently, an analytical review of existing methodologies for safety assessment of design rules for steel structures is carried out. The procedures are presented and their field of application is detailed. Furthermore, numerical validation of simplified procedures, based on assumed distributions of basic variables such as material and cross-section properties, is performed focusing on stability failure modes, in particular flexural buckling of columns. In addition, a numerical example is presented, which aims at further clarifying latter methodologies. Sensitivity analysis is performed in order to assess the influence of different basic variables. In this example, statistical distributions of the imperfections are also considered. Finally, the statistical dependence of basic variables is discussed, based on correlation between yield stress and plate thickness. In order to obtain a reasonable correlation coefficient, statistical data from real experiments is used. This dissertation is part of European research project SAFEBRICTILE RFS-PR-12103 – SEP nº 601596, where safety assessment procedure is developed for brittle to ductile failure modes. Therefore, it is considered a valuable contribution for achieving the project goals and further improvement of the design methodologies in the Eurocodes.2014-01-28info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesishttp://hdl.handle.net/10316/38527http://hdl.handle.net/10316/38527TID:201658453engTankova, Trayana Stoykovainfo: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:10316/38527Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:57:41.510845Repositório 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 Comparative review of possible alternatives for performing safety assessment of design rules for steel structures
title Comparative review of possible alternatives for performing safety assessment of design rules for steel structures
spellingShingle Comparative review of possible alternatives for performing safety assessment of design rules for steel structures
Tankova, Trayana Stoykova
Estruturas metálicas
Segurança de estruturas
title_short Comparative review of possible alternatives for performing safety assessment of design rules for steel structures
title_full Comparative review of possible alternatives for performing safety assessment of design rules for steel structures
title_fullStr Comparative review of possible alternatives for performing safety assessment of design rules for steel structures
title_full_unstemmed Comparative review of possible alternatives for performing safety assessment of design rules for steel structures
title_sort Comparative review of possible alternatives for performing safety assessment of design rules for steel structures
author Tankova, Trayana Stoykova
author_facet Tankova, Trayana Stoykova
author_role author
dc.contributor.author.fl_str_mv Tankova, Trayana Stoykova
dc.subject.por.fl_str_mv Estruturas metálicas
Segurança de estruturas
topic Estruturas metálicas
Segurança de estruturas
description Dissertação de Mestrado em Construção Metálica e Mista apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra
publishDate 2014
dc.date.none.fl_str_mv 2014-01-28
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/10316/38527
http://hdl.handle.net/10316/38527
TID:201658453
url http://hdl.handle.net/10316/38527
identifier_str_mv TID:201658453
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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