... Oxytropis type, the font, dry five kinds of fonts, and barrel, according to zoning are: Tension tower, straight-line tower, corner tower ... across the towers and so on, their structural features are all kinds of tower-type space truss structure, and bars mainly ... , material generally used Q235 (A3F) and Q345 (16Mn) are two types of inter-connected using crude bar bolts, through bolts shear connection ...