Top structure of concrete-filled steel tube combined tower, concrete-filled steel tube combined tower and bridge

The invention relates to a top structure of a concrete-filled steel tube combined tower, the concrete-filled steel tube combined tower and a bridge, the top structure comprises a stiff skeleton column and a steel truss, the steel truss comprises a bottom steel plate and a top steel plate, a main steel tube of the stiff skeleton column is connected to the bottom of the bottom steel plate, and a longitudinal web and a transverse web are connected between the top steel plate and the bottom steel plate; first through holes are formed in the bottom steel plate, the top steel plate, the longitudinal webs and the transverse webs correspondingly, first steel bars penetrate through the first through holes to form PBL shear keys, and the top area of the stiff framework column and the steel truss girder are wrapped with concrete. The steel truss girder, the main steel pipe and the encased concrete are connected into a whole through the PBL shear keys, huge pressure at the cable saddle can be transmitted ...