Study of lateral-torsional buckling in truss beams and lattice portal frames

In this work, we used a FEM software to study the buckling in truss structures. In the study, we considered different models of truss definitions, changing the boundary conditions and the load type, using a point load or distributed load. The software we used was ConSteel 16, a FEM software for stru...

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Detalhes bibliográficos
Autor: Alòs Pascual, Pau
Formato: tesis de maestría
Fecha de publicación:2023
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10459.1/463958
Acesso em linha:https://hdl.handle.net/10459.1/463958
Access Level:acceso abierto
Palavra-chave:Lateral-torsional buckling
Eurocode 3
Truss beams
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spelling Study of lateral-torsional buckling in truss beams and lattice portal framesAlòs Pascual, PauLateral-torsional bucklingEurocode 3Truss beamsIn this work, we used a FEM software to study the buckling in truss structures. In the study, we considered different models of truss definitions, changing the boundary conditions and the load type, using a point load or distributed load. The software we used was ConSteel 16, a FEM software for structural analysis and design. To check if the FEM software worked properly, we used published experimental results of testing real trusses, and verified that the results obtained by the FEM software when modelling these trusses, under the same boundary and load conditions, were close enough to the experimental results. Then we used this software to get the critical instability load for the studied structures, and compared the ones obtained following Eurocode 3. We used the FEM software to optimize lattice portal frames. The optimized structures that we get were much lighter than the original ones designed according to the Eurocode 3. The main conclusions that we got was that the standards oversize the profiles in trusses, only considering the compressed chord on the buckling analysis, and not the whole structure. In these standards, we also missed the method to calculate the critical axial force or critical bending moment, so we needed to search for methods in other sources. The FEM software is a really good substitute to analyse the instability in different kind of structures. They allow a very accurate results in a short calculation time, for complex structures, in that using another method would be impossible.Lampurlanés Castel, JorgeCots Call, Josep M.Universitat de Lleida. Escola Politècnica Superior2023info:eu-repo/semantics/masterThesishttps://hdl.handle.net/10459.1/463958reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Ingléscc-by-nc-ndAttribution-NonCommercial-NoDerivatives 4.0 Internationalinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/oai:recercat.cat:10459.1/4639582026-05-29T05:05:01Z
dc.title.none.fl_str_mv Study of lateral-torsional buckling in truss beams and lattice portal frames
title Study of lateral-torsional buckling in truss beams and lattice portal frames
spellingShingle Study of lateral-torsional buckling in truss beams and lattice portal frames
Alòs Pascual, Pau
Lateral-torsional buckling
Eurocode 3
Truss beams
title_short Study of lateral-torsional buckling in truss beams and lattice portal frames
title_full Study of lateral-torsional buckling in truss beams and lattice portal frames
title_fullStr Study of lateral-torsional buckling in truss beams and lattice portal frames
title_full_unstemmed Study of lateral-torsional buckling in truss beams and lattice portal frames
title_sort Study of lateral-torsional buckling in truss beams and lattice portal frames
dc.creator.none.fl_str_mv Alòs Pascual, Pau
author Alòs Pascual, Pau
author_facet Alòs Pascual, Pau
author_role author
dc.contributor.none.fl_str_mv Lampurlanés Castel, Jorge
Cots Call, Josep M.
Universitat de Lleida. Escola Politècnica Superior
dc.subject.none.fl_str_mv Lateral-torsional buckling
Eurocode 3
Truss beams
topic Lateral-torsional buckling
Eurocode 3
Truss beams
description In this work, we used a FEM software to study the buckling in truss structures. In the study, we considered different models of truss definitions, changing the boundary conditions and the load type, using a point load or distributed load. The software we used was ConSteel 16, a FEM software for structural analysis and design. To check if the FEM software worked properly, we used published experimental results of testing real trusses, and verified that the results obtained by the FEM software when modelling these trusses, under the same boundary and load conditions, were close enough to the experimental results. Then we used this software to get the critical instability load for the studied structures, and compared the ones obtained following Eurocode 3. We used the FEM software to optimize lattice portal frames. The optimized structures that we get were much lighter than the original ones designed according to the Eurocode 3. The main conclusions that we got was that the standards oversize the profiles in trusses, only considering the compressed chord on the buckling analysis, and not the whole structure. In these standards, we also missed the method to calculate the critical axial force or critical bending moment, so we needed to search for methods in other sources. The FEM software is a really good substitute to analyse the instability in different kind of structures. They allow a very accurate results in a short calculation time, for complex structures, in that using another method would be impossible.
publishDate 2023
dc.date.none.fl_str_mv 2023
dc.type.none.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
dc.identifier.none.fl_str_mv https://hdl.handle.net/10459.1/463958
url https://hdl.handle.net/10459.1/463958
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv cc-by-nc-nd
Attribution-NonCommercial-NoDerivatives 4.0 International
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
rights_invalid_str_mv cc-by-nc-nd
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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