| 摘要 |
PROBLEM TO BE SOLVED: To reduce a labor for center alignment of column bodies. SOLUTION: In a connection pole in which the lower end of an upper column body is inserted into connection holes provided at the upper end of a lower column body, and grout material is filled between the connection holes of the lower column body and the lower end of the upper column body to connect the upper column body to the top of the lower column body, the connection holes 9 of the lower column body fix positioning pieces 10 at the bottom corner parts at intervals in circumferential direction, the connection hole center sides of the positioning pieces 10 are formed slant face falling downward nearing to the center side, and a center aligning mechanism 10 by the positioning pieces 10 in which the lower end of the upper column body is inscribed onto the lower end of the positioning pieces 10 is provide. Also, the connection holes 9 of the lower column body are passed through with a screw shaft 11 provided on a peripheral wall and an interval provided in circumferential direction and, an center alignment mechanism 11 by the screw shaft 11 which, when the screw shaft 11 is rotated, the tip of the screw shaft 11 pushes the upper column body inside the peripheral wall is provided, and the center alignment mechanism 11 by the screw shaft 11 is provided on the upper side of the center alignment mechanism 10 by the positioning pieces 10. |
