The size and load of UHV AC tower in the high altitud and extra heavy ice zone is large

so whether the tower type is reasonable or not directly affects the rationality of the force and the safety of the structure of the towers

and the existing tower design experience can’t meet the requirements.In this paper

the mechanical characteristics of typical tension towers

including gan-type tower

cup-type tower

door-type tower and fission tower are analyzed

the size is planned according to the jumper clearance at 3 000 m altitude

modeling and calculation of different type of towers in 40 mm and 60 mm extra heavy ice zone are carried out

the recommended tower type selection scheme is given from the aspects of economy

terrain adaptability and joint construction difficulty

the research results can provide reference for tower design and engineering construction.