| 摘要 |
PROBLEM TO BE SOLVED: To further improve a drag force against a pulling force or the like. SOLUTION: Each pile 10 composing a batter pile foundation 1 is driven so that an extension line of an axial center A of the respective pile 10 extended above the respective pile head 11 does not cross each other, and the respective pile head 11 is fixed with a head part 20 in that state. Preferably, the respective pile 10 is driven, while being twisted a predetermined angle circumferentially, against the direction for setting the extension lines of the axial centers to cross each other (reference axial center Y). When a drawing load by a gust wind or the like, that is, a load for making afloat the head 20 above the ground is applied, a drag works in the direction perpendicular to the axial center A of each pile 10 while the drag force also works in the direction for eliminating the twist of each pile 10 in the twisted position. COPYRIGHT: (C)2010,JPO&INPIT
|
