| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a connection structure of a steel pipe pile, in which insertion of a nut can be easily performed. <P>SOLUTION: A cylindrical connection member N comprises: a lower half part internally fitted into the upper end part of a pile body 1 below the connection member N; and an upper half end part internally fitted into the lower end part of a pile body 1 above the connection member N. Bolt insertion holes 7 are provided at constant intervals in the circumferential direction in each of the upper end part of the pile body 1 below the connection member N and the lower end part of the pile body 1 above the connection member N. In the upper and lower end sides of the connection member N, bolt insertion holes 8 are provided at the respective positions corresponding to the bolt insertion holes 7 of the pile body side when the connection member N is inserted internally fitted into the connection end part of the pile body 1, while in the upper and lower parts of the inner peripheral surface of the connection member N, nut holding parts 9 for holding nuts 10 at the opposite positions axially facing the bolt insertion holes 8 on the connection member side. Each of the nut holding parts 9 on the upper end part consists of a pair of holding walls 11 and 11 on both sides, which receive the nut 10 at the opposite position and restrict rotation of the nut 10, and a slipout prevention arm 12, which is elastically deformed by striking the nut 10 from an inlet O, when inserting the nut 10, so as to expand the inlet O to allow the nut 10 to be inserted and is restored to prevent slipout of the nut 10. <P>COPYRIGHT: (C)2012,JPO&INPIT |
