| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint structure for upper and lower box-shaped section materials for satisfying both conditions, at the same time, of securing a size of a handhole and of securing strength by splice plates and high strength bolts. SOLUTION: In a joint structure for joining upper and lower steel pipe poles (the box-shaped section materials) using the splice plates and the high strength bolts, the splice plates 6, 7 are arranged inside and outside the upper and lower steel pipe poles 3, 4 and on parts close to the center of each side to bridge mutual joint ends 3a, 4a of the upper and lower steel pipe poles 3, 4. The handhole 12, through which the high strength bolts 5 are inserted, is formed in either joint end 3a or 4a or both at the corner 13 of the upper and lower steel pipe poles 3, 4, so that the high strength bolts 5 are inserted into bolt holes formed inside the upper and lower steel pipe poles 3, 4 through the handhole 12 formed at the corner 13. COPYRIGHT: (C)2005,JPO&NCIPI
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