Steel frame structure device with self-resetting beam column joints

The invention discloses a steel frame structure device with a self-resetting beam-column joint, relates to the technical field of steel frame structures, and aims to solve the problems that a support in a central support steel frame is easy to yield, poor in anti-seismic property, large in residual deformation, weak in self-resetting capability and the like, and the steel frame structure device comprises a steel column, a cantilever steel beam and a middle steel beam; the steel columns, the cantilever steel beams, the middle steel beams, the connecting beams I, the connecting beams II, the connecting angle steel, the cover plate, the SMA, the springs and the high-strength bolts are used in cooperation, and it can be effectively guaranteed that beam-column joints in the steel frame are stably connected; the middle steel beam rotates around a center round hole in the connecting beam I to dissipate energy, meanwhile, the arranged SMA and springs can provide reset capacity for the self-reset beam column joint und