Discrete optimum design of cable-stayed bridges

Detalhes bibliográficos
Autor(a) principal: Đerek, Andrea
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/10316/97110
Resumo: Dissertação de Mestrado em Engenharia Civil apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra.
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spelling Discrete optimum design of cable-stayed bridgesDissertação de Mestrado em Engenharia Civil apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra.Cable-stayed bridges are highly redundant structures in which the deck behaves like a continuous beam elastically supported by the inclined stays. They represent an aesthetically appealing and efficient structural solution for medium-to-long spans and are widely used all over the world. Their behaviour is governed by the stiffness of the load-bearing elements (pylons, deck and cable stays) and the cable force distribution. The structural design of cable-stayed bridges is iterative process in which designers have to satisfy all criteria’s relating to safety, use, economy, by changing certain structural parameters. In case of cable-stayed bridges the design of bridge includes solving a lot of different problems such as the choice of structural system, nonlinearity, construction process, dynamic behaviour, etc. Project of such structures generate massive amount of information during analysis and design process. The optimization algorithm can include as design variables mechanical, geometrical and sectional properties. Thus, they can be used in design process to allocate cross-sections of structure elements and/or determine the prestressing forces of cables to obtain optimal length and height of towers and spans. Most of the methods for the optimum design of engineering structures make the assumption that member size variables are continuous. Generally, designers are restricted to choosing member sizes from a discrete set of commonly available sizes and this problem is solved here. The rigorous discrete optimum design is a NP-hard problem (exponential time vs polynomial time for continuous optimization) significantly more difficult than the continuous problem. In this work it is presented structural analysis and discrete optimization of concrete cable-stayed bridge. As optimization method is used segmental optimization method to obtain optimal dimensions of deck and tower cross-section and adjustment cable forces.2015-07info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesishttp://hdl.handle.net/10316/97110http://hdl.handle.net/10316/97110engĐerek, Andreainfo: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:RCAAP2022-05-25T04:28:27ZPortal AgregadorONG
dc.title.none.fl_str_mv Discrete optimum design of cable-stayed bridges
title Discrete optimum design of cable-stayed bridges
spellingShingle Discrete optimum design of cable-stayed bridges
Đerek, Andrea
title_short Discrete optimum design of cable-stayed bridges
title_full Discrete optimum design of cable-stayed bridges
title_fullStr Discrete optimum design of cable-stayed bridges
title_full_unstemmed Discrete optimum design of cable-stayed bridges
title_sort Discrete optimum design of cable-stayed bridges
author Đerek, Andrea
author_facet Đerek, Andrea
author_role author
dc.contributor.author.fl_str_mv Đerek, Andrea
description Dissertação de Mestrado em Engenharia Civil apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra.
publishDate 2015
dc.date.none.fl_str_mv 2015-07
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/10316/97110
http://hdl.handle.net/10316/97110
url http://hdl.handle.net/10316/97110
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)
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