Axial Compressive Strength Experimental and Numerical Studies of Full-Scale Specimens Simulating GFRP Composite Bushing Column

摘要

With the construction of smart grids for electric power and the application of new transmission technologies, such as multi-circuit lines in single towers and extra-high voltage (EHV) transmission lines, the height and load of transmission towers have been constantly increasing. Traditional transmission tower materials cannot satisfy the requirements of new technologies in terms of strength grade, electrical insulation performance, and thus they are gradually being replaced by materials with the merits of environmental protection and high strength. GFRP (glass fiber reinforced plastic or polymer) is mainly composed of the resin and fiber or fabric, and possesses such advantages as light weight, high strength, corrosion resistance, fatigue resistance and good insulation properties. Several studies indicate that GFRP is an ideal material for the construction of green power grids, which have considerable market prospect. Therefore, conducting the related mechanic performance research of GFRP offers important theoretical significance and engineering application value.