Corrosion and fracture of guyed rod used for 220KV transmission tower

This study employed a comprehensive and rigorous methodology to investigate the causes of corrosion and fracture in steel rods of 220kV transmission towers. It involved a macroscopic review, chemical composition analysis, microscopic observation, thickness measurement of the galvanized layer, morphology and energy spectrum analysis, hardness assessment, and soil physical and chemical testing. This approach allowed for a thorough examination of both internal and external factors affecting the materials and external environmental influences. The findings provide a scientific basis and maintenance recommendations for the safe operation of transmission tower structures. It has been highlighted that the alkaline sandy soil, characterised by high levels of chlorine and sulphate, in close proximity to the transmission line is the primary factor contributing to the corrosion and fracture of rod components. Consequently, it is essential to enhance the monitoring of the existing cable rod within the cable tower and to expeditiously replace those that have undergone significant corrosion, in order to guarantee the secure operation and stability of the power transmission system. In order to forestall a recurrence of corrosion failure in the rubber strip of the power transmission facilities, it is necessary to employ high-performance corrosion-resistant materials and concrete reinforcement technology. This will serve to enhance the corrosion resistance of the rubber strip, thereby ensuring the safe and stable operation of the power transmission system.