Simplified Method to Analyse Casting Sequences of Composite Bridge Slabs
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Détails bibliographiques
| Auteur(s): |
Luigino Dezi
Fabrizio Gara Graziano Leoni
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| Médium: | papier de conférence | ||||
| Langue(s): | anglais | ||||
| Conférence: | IABSE Symposium: Long Span Bridges and Roofs - Development, Design and Implementation, Kolkata, India, 24-27 September 2013 | ||||
| Publié dans: | IABSE Symposium Kolkata 2013 | ||||
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| Page(s): | 1-8 | ||||
| Nombre total de pages (du PDF): | 8 | ||||
| Année: | 2013 | ||||
| DOI: | 10.2749/222137813808627325 | ||||
| Abstrait: |
This paper presents a simplified procedure to analyse the effects of construction sequences of slabs in steel-concrete composite bridge decks. The procedure allows accounting for shrinkage and casting sequence effects. The time-dependent behaviour of the concrete is also included to capture the stress relaxation that mitigates the effects of the fast thermal shrinkage. Main features related to modelling of early-age concrete behaviour and tensile creep are discussed. The proposed simplified method is applied to evaluate the stresses in the slab of a realistic three-span composite bridge deck by considering different casting sequences. The comparison between the results obtained with the proposed method and those given by a step-by-step procedure shows the accuracy of the simplified method that can be considered a useful tool for practical applications. |
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