| 摘要 |
PROBLEM TO BE SOLVED: To provide highly reliable steel pipe connection structure and steel pipe connection method without making a rotation suppressing key fall off, even when falling off or being ruptured by loosening of a bolt for fixing the rotation suppressing key straddlingly provided in a joint of both steel pipes for suppressing relative rotation around the axis of a vertically arranged steel pipe for constituting a steel pipe pile in erection construction of the steel pipe pile.SOLUTION: A steel pipe connection structure constitutes a key arranging part 40 by cooperating between an upper side cutout part 40A formed along the circumferential direction on the peripheral edge of a lower end part of an upper side steel pipe 10A and capable of inserting a rotation suppressing key 50 upward from the lower end part and a lower side cutout part 40B formed in a position corresponding to the upper side cutout part 40A along the circumferential direction on the peripheral edge of an upper end part of a lower side steel pipe 10B and capable of inserting the rotation suppressing key 50 downward from the upper end part, and is provided with a falling-off preventive mechanism for suppressing the rotation suppressing key 50 from falling off from the key arranging part 40, on a side surface of the rotation suppressing key 50 and a side surface of the key arranging part 40. |
