Research on Seismic Performance of Spatial Beam to Column Connection with T-Stubs

摘要

This paper studies the seismic performance of spatial semi-rigid beam-column connections with T-stubs. The middle column connection of steel frame as the research objects and there is one spatial T-stub connection specimen and one plane T-stub connection specimen. Spatial quasi-static tests and finite element analysis are carried out, which load is applied to the column. According to the results of quasi-static tests and finite element calculations, difference of joints' rotational stiffness, hysteretic property, ductility coefficient and energy dissipation characteristics are analyzed. It is verified that the mechanical characteristics of spatial semi-rigid joint under spatial load are different from plane semi-rigid joint under plane load.