This paper presents an analytical model for the analysis of steel-concrete composite beams including partial interaction within the geometric nonlinear finite deformation theory. Due to the complexity of the formulation the model is afterward simplified within the framework of small strains and moderate rotations, considered acceptable for practical structural problems, and the numerical solution is obtained through the finite element method. A numerical example involving a cantilever subjected to an eccentric axial load, selected to emphasise the nonlinear geometric behaviour, is presented to illustrate the results obtained from the proposed formulation, showing how the geometric nonlinear effects are influenced by the shear connection stiffness.
Geometric nonlinear composite beam model including partial interaction
DALL'ASTA, Andrea;ZONA, Alessandro;
2011-01-01
Abstract
This paper presents an analytical model for the analysis of steel-concrete composite beams including partial interaction within the geometric nonlinear finite deformation theory. Due to the complexity of the formulation the model is afterward simplified within the framework of small strains and moderate rotations, considered acceptable for practical structural problems, and the numerical solution is obtained through the finite element method. A numerical example involving a cantilever subjected to an eccentric axial load, selected to emphasise the nonlinear geometric behaviour, is presented to illustrate the results obtained from the proposed formulation, showing how the geometric nonlinear effects are influenced by the shear connection stiffness.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.