Research on the material properties of corroded angle steel members of the in-service transmission tower

The number of old transmission lines in China is increasing, and corrosion is a common problem on old transmission towers, which reduces the load-bearing performance of the tower and leads to potential safety hazards. The paper conducts investigation and sampling of the actual engineering line towers, analyzes the reasons for the corrosion of the towers, and carries out the tensile test of the specimens, and obtains the relationship curve of the elongation loss ratio, the yield strength loss ratio, the tensile strength loss ratio and the elastic modulus loss ratio with the cross-sectional loss ratio, which provides a basis for the evaluation of the load-bearing performance of the old transmission tower.

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