Power towers are steel frameworks used in transmission lines to support conductors at a safe distance from each other, ground conductors, and ground structures. They are generally categorized by shape into five types: wine glass-shaped, cat's head-shaped, up-letter-shaped, cross-shaped, and drum-shaped. By function, they are divided into: tension type, straight type, corner type, transposition type (conductor phase change position tower), terminal tower, and overhead crossing tower, etc. Their structural features include all tower types being spatial truss structures, with members primarily composed of single equal-leg angle steel or combined angle steel. Materials typically used are Q235(A3F) and Q345(16Mn). Connections between members are made with heavy-duty bolts, which are subjected to shear force. The entire tower is assembled from angle steel, connecting steel plates, and bolts, with some components like the tower base being焊接 from several steel plates into a composite part, making hot-dip galvanizing for corrosion protection, transportation, and construction easier. For towers with a height of less than 60 meters, a foot钉 is installed on one of the main members of the tower to facilitate climbing for construction workers.