Research on Seismic Performance of New Type Beam-Column Steel Joints with Double Loops

In recent years, box steel column and box steel beam have been used more and more widely in steel structure system because of their good overall stability and convenient construction. However, due to the influence of welding technology and the working environment of the construction site, it is difficult to ensure the quality of the weld at the joint of the beam and column. Therefore, in this paper, two new types of joints were proposed for steel structure connection: double ring hoop sleeve joints and double ring hoop π-shape joints, and two groups of components were designed to be analyzed by changing the ratio of the thickness of the double ring hoop and the size of the slotted hole of reaming-type beams, and the finite element simulation analysis of seismic performance was carried out by applying ABAQUS software. The results showed: the flexural strength of the joints increases with the increase of the ratio of the thickness of the double ring hoop to the columns; the two joints showed a better sliding effect when using the slotted holes type, which helps to improve the energy-consuming capacity of the structure. In conclusion, the double ring hoop sleeve joints and double ring hoop π-type joint have good force seismic performance, reflecting good seismic performance, and provided reference for the practical application of steel frame with new beam-column joints.