METHOD FOR REPLACING MAIN POST OF ANGLE STEEL TOWER

摘要

PROBLEM TO BE SOLVED: To provide a method for replacing a main post of an angle steel tower easily and reliably while maintaining a truss structure.SOLUTION: A method for replacing a main post of an angle steel tower is characterized by: providing a support material 4 for making top and bottom ends be supported by other main posts 1 connected to the top and bottom ends of a replacement target main post 1; removing a web member 3 joined to the highest web member drawing point of the replacement target main post 1; cutting and removing the main post 1 of a place to the web member drawing point and an upper second web member drawing point; connecting a new main post short piece 5a to the main post 1 of the higher side of the cutting position; joining the removed web member 3 to the new main post short piece 5a; repeating these work sequentially from the top; and replacing the replacement target main post 1 to a new main post 5 comprising multiple main post short pieces 5a while forming a truss structure.SELECTED DRAWING: Figure 1