| 摘要 |
PROBLEM TO BE SOLVED: To provide a friction welding structure of a high strength bolt for steel tube column capable of absorbing the erection error (angle and length errors) of the column in welding by reducing a projected part on the welded part outside the steel column to reduce the effects thereof on the finish treatment of the steel column, providing excellent workability, and stably securing welding strength and its construction method in forming the steel tube column by welding square or circular steel tubes to each other in the longitudinal direction by using reinforcing plates and the high strength bolts. SOLUTION: In this structure, the reinforcing plates having a plurality of over-sized bolt holes corresponding to the bolt holes in the steel tube column and holding nuts on the rear side thereof according to the bolt holes so as to be displaced in the radial direction of the bolt holes in the reinforcing plates and not to be co-rotated with the high strength bolts are tightened by abutting on the inside of the steel tube column and inserting the head tightening torque shear type high strength bolts from the outside of the steel tube column, threading into the nuts held on the reinforcement plates in contact with the inside of the steel tube column, and tightening the heads thereof. COPYRIGHT: (C)2005,JPO&NCIPI
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