Steel pipe inclined strut welding joint structure bearing large eccentric fatigue load

The invention relates to a steel tube diagonal bracing welding joint structure bearing large eccentric fatigue load, which comprises a steel tube, a joint plate and filled concrete, and the steel tube can be a square steel tube, a rectangular steel tube and a round steel tube. The section of the steel pipe is divided into two cavities by a middle steel partition plate, concrete is filled in the cavity on the compression side, and the gusset plate is connected with the concrete by arranging holes and penetrating ribs. Long-strip-shaped grooves are formed in the tension sides and the compression sides of the steel pipes and the middle steel partition plates, so that the gusset plates can be inserted into the long-strip-shaped grooves and are welded with the long-strip-shaped grooves, round holes are formed in the ends of the long-strip-shaped grooves in the tension side steel pipes, and the compression side steel pipes and the ends of the gusset plates are welded in a surrounding mode. According to the steel pi