| 摘要 |
PROBLEM TO BE SOLVED: To provide a connection member capable of correcting a shaft center of an upper side steel pipe arranged on an upper portion in a direction along a vertical direction even if a shaft center of a lower side steel pipe arranged on a lower portion is slightly inclined from the vertical direction when connecting the two steel pipes that need be vertically arranged along the vertical direction.SOLUTION: A connection member 20 for vertically connecting a plurality of steel pipes 10 (10A, 10B) comprises: a box joint 22 as a first joint part which can be joined to a pin joint 11 on an upper end of a lower side steel pipe 10A arranged on a lower portion along a first joint shaft center CA corresponding to a shaft center CA of the lower side steel pipe 10A; and a pin joint 21 as a second joint part which can be joined to a box joint 12 on a lower end of an upper side steel pipe 10B arranged on an upper portion along a second joint shaft center CB corresponding to a shaft center CB of the upper side steel pipe 10B. The pin joint 21 and the box joint 22 are configured so that the second joint shaft center CB has a prescribed inclination angle with respect to the first joint shaft center CA.SELECTED DRAWING: Figure 1 |
