Flexural Capacity of Cross-Shaped Concrete-Filled Steel Tubular Column–Steel Beam Joints with Side-Plate Connections

The application of connection joints between a cross-shaped concrete filled steel tubular column and beam can improve the seismic performance, which also provides an effective way for saving building space. In this paper, models flexural capacity joint with without side plates were designed evaluated, respectively. A refined mechanical analysis model subjected to low-cycle reciprocating loading was established using finite element software ABAQUS. failure characteristics compared. influence axial compression ratio, plate height, thickness on studied. Moreover, mode force transfer mechanisms these analyzed. Based results (FEA), ultimate tensile tube flange calculated according yield line theory; tension transmitted by simplified calculation via static equilibrium method. Subsequently, formula calculating is established. show that bearing increased 41.5% due effect, decreased increasing ratio. increase slightly height plate, maximum only 6.2%. addition, obtained proposed are consistent FEA.