| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of correcting a channel-shaped steel sheet pile in which warpage of the channel-shaped steel sheet pile can be reduced and width can be adjusted.SOLUTION: Upper rolls 21, 23, 25, and 27 which each have a roll surface 20 in a shape along an upper surface 10a of a channel-shaped steel sheet pile 10 in an inverted channel attitude, and restrain a web 1 and a flange 2 from the side of the upper surface 10a by bringing the roll surface 20 into contact with the upper surface 10a, and lower rolls 22, 24, and 26 which each have a roll surface 20 in a shape along a lower surface 10b of the channel-shaped steel sheet pile 10 and restrain the web 1 and flange 2 from the side of the lower surface 10b by bringing the roll surface 20 into contact with the lower surface 10b are arranged zigzag alternately across a material passage path for the channel-shaped steel sheet pile 10. Then the channel-shaped steel sheet pile 10 is passed through the material passage path with the web 1 and flange 2 held between the roll surface 20 of the upper roller and the roll surface 20 of the lower roll so as to bend and bend back the web 1 in vertical directions alternately and also to increase and decrease the width between joint parts 3 alternately. |
