| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a joint structure of a rotary press-in steel pipe pile, which dispenses with field welding while enabling bidirectional rotation transfer, which can be mechanically connected by simple operations, and which hardly requires work on the steel pipe pile itself by virtue of a simple constitution. <P>SOLUTION: A joint pipe 3 for being fitted into inner peripheries of steel pipe piles is provided throughout a lower portion of an upside steel pipe pile 1A and an upper portion of a downside steel pipe pile 1B, which are connected to each other. A part in a circumferential direction of the joint pipe 3 is provided with a groove-shaped portion 5 which is formed by plastically deforming a pipe wall in a groove shape. Engaging protrusions 6 and 6, which make an axial entry into the groove-shaped portion 5 of the joint pipe 3 to be engaged in a circumferential direction, are provided on the inner peripheral surfaces of the upper and lower steel pipe piles 1A and 1B, respectively. The joint pipe 3 is provided with a steel pipe pile receiving flange 4 which transfers a downward axial load to a section between the upper and lower steel pipe piles 1A and 1B. <P>COPYRIGHT: (C)2012,JPO&INPIT |
