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Steel and Composite Structures
  Volume 6, Number 2, April 2006, pages 123-138

Construction sequence modelling of continuous steel-concrete composite bridge decks
Luigino Dezi, Fabrizio Gara and Graziano Leoni

    This paper proposes a model for the analysis of the construction sequences of steel-concrete composite decks in which the slab is cast-in-situ for segments. The model accounts for early age shrinkage, such as thermal and endogenous shrinkage, drying shrinkage, tensile creep effects and the complex sequences of loading due to pouring of the different slab segments. The evolution of the structure is caught by suitably defining the constitutive relationships of the concrete and the steel reinforcements. The numerical solution is obtained by means of a step-by-step procedure and the finite element method. The proposed model is then applied to a composite deck in order to show its potential.
Key Words
    steel-concrete composite decks; fractionated casting; construction sequence; shrinkage and creep effects; finite element method.
Luigino Dezi and Fabrizio Gara; Dept. of Architecture, Construction and Structures, Marche Polytechnic Univ., via Brecce Bianche 60131, Ancona, ItalyrnGraziano Leoni; PROCAM, Univ. of Camerino, Viale della Rimembranza, 63100, Ascoli Piceno, Italy

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