| 摘要 |
PURPOSE:To smoothly penetrate a foundation pile into the ground by penetrating a cylindrical foundation pile having a Y-shaped blade on its lower end into the stirred ground while being turned. CONSTITUTION:In driving a cylindrical foundation pile 7 having a Y-shaped blade 8 slightly longer than its radius on its lower end face, th ground is first stirred to a given depth by a stirring screw 6 and the screw 6 is taken out of the ground. Afterwards, the pile 7 with the blade 8 is penetrated into the stirred ground while being turned. Since the stirred soil goes into the pile 7 through the blade 8 in this case, the pile 7 can be smoothly penetrated into the ground without resistance. |
