ABSTRACT
A numerical simulation of a composite Moment Resisting Frame is presented. Fibre elastoplastic finite elements are used to simulate the frame elements, integrating the real stress-strain behaviour of component materials. A sophisticate finite-element is also incorporated in order to model the behaviour of beam-to-column joints, whose calibration is based on a real moment-rotation curve of a tested specimen. A parametric study is performed by varying the resistance and the stiffness of the joints. Three accelerograms are considered for the time-history analyses. The interpretation of the numerical simulations involves the required inelastic rotations of the composite beams and joints, the storey drifts and the consequences in terms of the q factor and the structural performance factor η.
