EVALUATION OF NORMATIVE MODELS INTEGRATED TO NONLINEAR COM- PUTATIONAL MODELS FOR SIMULATION OF STEEL-CONCRETE COMPOSITE BEAMS WITH PARTIAL INTERACTION
Palavras-chave:
Cracking, Partial interaction, Steel-concrete composite beams, Concentrated plasticityResumo
The present study refers to the composite steel-concrete beams analysis considering the vari-
ous nonlinear effects inherent to the structural typology. These effects generate complexity to the design
requiring computational methodologies for the accurate measurement of structural behavior. With good
numerical efficiency, the Refined Plastic Hinge Method also stands out for its simplicity. This method-
ology will be used considering rotational pseudo-springs at the finite elements ends for the simulation
of plasticity. However, this approach was developed for isotropic materials with elastic-perfectly-plastic
behavior, implying loss of precision in the analysis of structures containing concrete in their compo-
sition. Furthermore, the effects of partial interaction can not be simulated by the inherently rotational
behavior of the pseudo-springs. Thus, the introduction of the cracking and partial interaction effects will
be approached through effective moment of inertia defined by normative criteria. The validation of the
implementations will be done based on the comparison with numerical and experimental data present in
the literature through several parameters extracted from the program.
