Based on five specimen tests of interior slab-column connections under low-cycle reversed loads,hysteretic behaviors,ductility,and energy dissipation of interior slab-column connections are studied.

In this paper,the experimental study on three interior beam-column joints of RC frame with split columns and one interior beam-column joint of ordinary RC frame under higher axial compressive ratio and cyclic loading for comparison are performed.

Experimental Study of Beam-Column Joints Strengthened with CFS;

Analysis of ratio of axial compressive force to resisting shear strength of reinforced concrete beam-column joints;

Research into fracture of steel frame beam-column joints;

The influence factor to the ultimate bearing capacity of concrete beam-column joints with placed ducts under axes-pressure;

The seismic resistant design method of reinforced concrete beam-column connections based on compression strut and softened truss models;

Therefore, the study on the behavior of the beam-column connections to improve ductility as well as to prevent brittle failure was carried out in this research.

Three-dimensional finite element method was employed toinvestigate the effect of the strength mismatching of the groove heamflange welds on the fracture toughness requirements in terms of crack tipopening displacement in welded beam-column connections, which pro-vides valuable suggestions for the design of beam-column connections andselecting welding materials.