Seismic performance of flange plate connections between steel beams and box columns

Cyclic performance of flange-plate connection to box column with finger shaped plate

“…This can result in a greater potential for fracture at the K-area region of the beam (Fig. 1), which was also proven by the experimental tests [10]. As shown in Fig.…”

Seismic performance of box-plate, box-plate with UNP, box-plate with L-plate and ordinary rigid beam-to-column moment connections

“…Fig. 7 shows comparing FEM model with the laboratory test that carry out with Tehranizadeh et al [3,11,9]. Fig.…”

“…Other findings worth noting in their study are: 1) some kind of fracture or rupture was observed in the flange-web connection line around the plastic hinge, 2) an increase in the plate length caused an improvement in the required plastic bending moment which increased the local buckling of the web and flange around the plastic hinge, 3) an expansion in the local buckling caused an increase in the failure potential of the plastic hinge, 4) in the web plate connection, since the plastic hinge was formed at the end of the upper plate, no damage occurred to the upper plate-to-web slot weld, and 5) in models with longer flange connection plates, the slot weld rupture in the web-to-flange line occurred around the plastic hinge; the reason being the plate length which increased the plastic strain in that area. Accordingly, they suggested that it would be beneficial if the flange plates had the shortest lengths, welding materials would be high-strength (resistant), so the upper and lower plates' thicknesses for welding were the highest allowable [3].…”

“…To do this research, use was made of the restrained connection utilized in the models. To make sure of the manual model dimensions, use was made of the AISC for the sections and sizes of the welding and connection plates with no loading combination coefficients; these sections were then modeled in the finite element software [3,4,[6][7][8].…”

Introducing box-plate beam-to-column moment connections

“…The results, validated through simulations in the ABAQUS Software, revealed that the deformations were nearly similar in all three models. Accordingly, they suggested that it would be beneficial if the flange plates had the shortest lengths, welding materials were high-strength (resistant), and the upper and lower plates' thicknesses for welding were the highest allowable [3].…”