Supporting structure for fabricated steel structure building

The utility model provides a supporting structure for an assembly type steel structure building, which relates to the technical field of supporting structures and comprises a steel structure body, supporting frames are arranged on the top of the outer surface of the steel structure body, outer frames are arranged on two sides of the steel structure body, adjusting frames are arranged on the inner sides of the outer frames, and clamping frames are arranged on the side surfaces of the adjusting frames. A concave groove is formed in the side surface of the clamping frame in a penetrating mode, and a limiting rod is installed on the side surface of the clamping frame. By arranging the steel structure body, the outer frame, the adjusting frame, the clamping frame, the concave groove, the limiting rod, the screw rod, the inserting groove and the inserting block, the position adjusting function of the clamping frame can be achieved through cooperation of the outer frame, the adjusting frame, the screw rod, the limit