Axial Bearing Capacity of Angle Parallel Reinforcement for High Voltage Transmission Towers

The risk of transmission tower collapse can be effectively controlled by improving the bearing capacity of its local stability. Through the test of six-angle parallel reinforcement under axial compression, a single-angle axial compression test and the analysis of 13 finite element models, the load-displacement curves of the specimens, the load-strain curves and Mises stress nephogram are obtained. Further the laws of stress and strain of the specimens and how design parameters affect the component bearing capacity are explored. The results show that the local buckling instability is the main failure mode of the specimens. The maximum strength of the reinforced angle unit reaches 223.1 MPa, and the maximum strength of the board clamp element reaches 83.7 MPa. The overall strain of the specimen is mainly vertical strain, and that of the board clamp is mainly shear strain. The buckling formula of uniform plate theory can calculate the ultimate bearing capacity of the reinforced specimen. The parallel reinforcement can improve the bearing capacity of single angle by 40%.