Mixed tower structure of steel tower and steel shell concrete combined tower

The invention discloses a mixed tower structure of a steel tower and a steel shell concrete combined tower, which comprises an upper tower column, a combination section and a lower tower column which are sequentially arranged from top to bottom, the upper tower column is a steel tower, the lower tower column is the steel shell concrete combination tower, and the upper tower column is transited to the lower tower column through the combination section. The mixed tower structure can be used for a main tower with a complex appearance, the appearance quality is good, the crack resistance and durability of the tower wall are good, the construction period is short, the lower tower column is the steel shell concrete combined tower, the plate thickness can be reduced, the machining difficulty is lowered, and the manufacturing cost is saved; the upper tower column is a steel tower, can solve the problem that the dead weight of the structure is increased along with the increase of the modeling size, or can adapt to the