Rigidity-variable steel structure joint

The utility model discloses a rigidity-variable steel structure node, which is arranged between a concrete buttress and a steel member, the rigidity-variable steel structure node comprises an embedded part, a cushion block, a bolt and a disc spring group, the embedded part is arranged on the top surface of the concrete buttress, the cushion block is arranged between the embedded part and the steel member, and the disc spring group is arranged between the cushion block and the steel member. The head end of a screw rod of the bolt is embedded in the concrete buttress, the connecting end of the screw rod protrudes out of the embedded part and extends into the steel member, and the disc spring set is assembled at the connecting end of the screw rod of the bolt and fastened through a nut. The steel structure node has the advantages that the steel structure node is used in a steel structure to achieve rotation of the steel structure node, the variable rotation rigidity of the node is achieved through different comb