Analysis on the Mechanical Stability of the Leg Joints in UHV Transmission Tower

Abstract

Transmission line pole tower, whose safety and reliability will directly affect the safe and stable operation of the entire transmission line, is a rod-shaped and tower-shaped structure that supports overhead transmission line conductors and ground lines and maintains a certain distance between them and the ground. Moreover, the stress stability of the leg structure joints in UHV transmission towers is mainly analyzed in the paper. With the help of the finite element analysis software, taking the arrangement of the long and short legs in the actual structure of the tower as an example, the influence of different angles of the tower on the bending moment is compared and analyzed under the condition that the main material slenderness ratio is the same. Meanwhile, in order to eliminate the influence of horizontal force on the height of different tower legs, only the bending moment generated by the structural system at the tower legs under axial pressure is considered to continuously improve the stability and reliability of the line pole tower structure, so that the power safety can be guaranteed to a large extent.