| 摘要 |
PURPOSE:To prevent the occurrence of vibration in forming a pile by a method in which grains to be expanded during shearing breakage are packed into a hollow pile connected to one opening of a cylinder, the pile is driven, together with the cylinder, into the ground, and a water-permeable material is packed into the cylinder. CONSTITUTION:A hollow pile 2 is connected to one opening of a cloth made cylinder 1, and grains 3, e.g., sand, slag, or gravel, etc., are packed into the pile 2. The grains 3 are compacted through the cylinder 1 by a rammer 5, and the pile 2 is driven, together with the cylinder 1, into the ground 4 to form a space 6. Reinforcing materials 7 are set in the space 6, and sand and fine gravels 8 are packed into the space 6 or a water-permeable material 9, e.g., porous cement mortar or concrete, etc., is packed into the space 6 to form a drain pile. Cement mortar or concrete 10 is further packed into the cylinder 1 to form a support pile or friction pile. |
