Aerostructural Optimization of Long Span Bridges: Current Advances and Challenges
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Aerostructural Optimization of Long Span Bridges: Current Advances and ChallengesData
2020Cita bibliográfica
Aerostructural Optimization of Long Span Bridges: Current Advances and Challenges. Santiago Hernandez, Felix Nieto, Miguel Cid Montoya, José A. Jurado. Structures Congress 2020, p. 742-756. 2020
Resumo
[Abstract] This paper describes the evolution of deck shape of long span bridges since the Tacoma Narrows collapse trying to avoid undesirable aerodynamic behavior under wind flow and the trend in the last decades to increase the length of the main span of suspension and cable stayed bridges. The necessity to use advanced technologies to help the engineer to obtain the best possible design is highlighted and the advantages of applying optimization methodologies is encouraged. It is explained that this approach requires to use only numerical tools and hence to eliminate experimental studies, as wind tunnel tests using reduced models of full bridge of a segment of the deck, and their substitution by computational fluid dynamics (CFD) simulations. After doing so, the current capabilities of this approach are presented and, finally, the problems that need to be solved to have a fully operational methodology able to be implemented in real structures are outlined.
Palabras chave
Bridge decks
Numerical analysis
Cable stayed bridges
Cables
Span bridges
Suspension bridges
Numerical models
Computational fluid dynamics technique
Washington
United States
Tacoma
Numerical analysis
Cable stayed bridges
Cables
Span bridges
Suspension bridges
Numerical models
Computational fluid dynamics technique
Washington
United States
Tacoma
Descrición
Structures Congress 2020. 5-8 abril, 2020. St. Louis, Missouri
Versión do editor
Dereitos
Copyright ASCE. Só para uso persoal, todos os dereitos reservados.
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