Mechanical Analysis on the Splicing Form of Cross-Section Multiple Angle Steel for Transmission Line

Abstract

The stress inside and outside the traditional cross-section angle steel in transmission lines are uneven, resulting in the deviation of the actual carrying capacity and the theoretical design value. This paper proposes the use of improved splicing form of the cross-section angle steel to improve the structure’s mechanical properties. Two spliced forms of cross-section multiple angle steel are analyzed by finite element simulation analysis, so as to compare two different forms’ coordination of component displacement, uniform of force, and stress status on the maximum stress control section. It is pointed out that double angle splicing forms’ displacement compatibility and bearing capacity are better than single angle splicing forms. Especially for towers with different height legs, the maximum stress of the main members of the two splicing forms in the control section is respectively 4.7% and 13.7%.