Cyclic Behavior of Composite Joints Between Circular Hollow Steel Tube-Reinforced Concrete Columns and H-shaped Steel Beam

Abstract

Hollow steel tube-reinforced concrete columns have been more and more used in real structures. However, the researches on these kinds of composite joints are still relatively less. Based on the appropriate selection of material constitutive relation, element type and contact model, 3 nonlinear finite element analysis models are set up which are used for the whole loading process of hollow steel tube-reinforced concrete column to steel beam joints under constant axial load on the top of column and cyclic load at the beam ends. Based on these finite element analysis results, an intensive research can be done for the stress and strain relation of each component.