Reinforced steel structure at joint of steel structures

The utility model relates to the technical field of steel structures, in particular to a reinforced steel structure at the joint of the steel structures, which is convenient to disassemble and convenient for subsequent reuse, and avoids waste of resources. Comprising longitudinal I-shaped steel and transverse I-shaped steel, four sets of fixing lock nuts are symmetrically and fixedly arranged at the front end and the rear end of the longitudinal I-shaped steel correspondingly, sinking grooves are formed in the left end and the right end of the longitudinal I-shaped steel correspondingly, and four sets of connecting screw holes are formed in the two sets of sinking grooves correspondingly; the two sets of inserting rods are fixedly installed on the two sets of sliding blocks correspondingly, second hinge bases are fixedly arranged on the two sets of clamping frames correspondingly, one ends of the two sets of supporting plates are hinged to the two sets of first hinge bases correspondingly, the other ends of t