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Steel and Composite Structures
  Volume 9, Number 3, June 2009 , pages 275-301

Thin-walled composite steel-concrete beams subjected to skew bending and torsion
Francesca Giussani and Franco Mola

    The long-term behaviour of simply supported composite steel-concrete beams with deformable connectors subjected to skew bending and torsion is presented. The problem is dealt with by recurring to the displacement method, assuming the bending and torsional curvatures and the longitudinal deformations of each sectional part as unknowns and obtaining a system of differential and integro-differential equations. Some solving methods are presented, in order to obtain exact and approximate solutions and evaluate the precision of the approximate ones. A case study is then presented. For the sake of clearness, the responses of the composite beam under loads applied in different directions are studied separately, in order to correctly evaluate the effects of each load condition.
Key Words
    creep; composite steel-concrete beams; deformable connectors; skew bending; torsion; thin-walled section.
Francesca Giussani and Franco Mola; Department of Structural Engineering, Milan University of Technology (Politecnico), L. da Vinci, 32, 20133 Milan, Italy

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