Nonlinear Behaviour of Under-Deck Cable-Stayed Bridges with Steel−Concrete Composite Decks
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Bibliographic Details
| Author(s): |
Fernando Madrazo-Aguirre
(Research student, Imperial College London, London, UK)
Ana Maria Ruiz-Teran (Senior Lecturer in Bridge Engineering, Imperial College London, London, UK) M. Ahmer Wadee (Professor of Nonlinear Mechanics, Imperial College London, London, UK) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Conference: Structural Engineering: Providing Solutions to Global Challenges, Geneva, Switzerland, September 2015 | ||||
| Published in: | IABSE Conference Geneva 2015 | ||||
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| Page(s): | 542-549 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2015 | ||||
| DOI: | 10.2749/222137815818357610 | ||||
| Abstract: |
The effect of geometric nonlinearities in the response of under-deck cable-stayed bridges with steel−concrete composite decks is studied. Influence lines for deflections and bending moments at different sections of the deck are obtained, and these are found to be different to those for conventional bridges. Nonlinearities affect principally the response of lateral subspans, in which both deflections and bending moments are amplified. The permanent state should be studied by taking nonlinearities into account. Deflections under further loads can be obtained with linear models. Geometric nonlinear effects increase design bending moments under ultimate loads by 12% when compared with linear models. Some additional design criteria for designers aiming to design under-deck cable-stayed bridges are hence provided. |
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| Keywords: |
bridges composite construction cable-stayed non-linear response innovative cable-staying systems under-deck cable-staying systems
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