| 摘要 |
PURPOSE:To provide a great bearing force for the tip of a pile as well as easily penetrate the pile even by comparatively small loads of a penetrator by a method in which penetrating cones are penetrated into the bottom of an excavated pit in a divided manner. CONSTITUTION:A penetrating cone 1, formed by combining closely a concentric columnar part 11 and plural cylindrical parts 12-15, is hung down and set on the bottom of an excavated pit after setting a casing on the wall of the excavated pit and finishing the treatment of slime. The penetrating cone 1 is orderly penetrated in the order of the central columnar part 11 and the cylindrical parts 12-15 by means of a penetrator. Since a divided penetration system is used, the penetrating cone 1 can be easily penetrated even by comparatively small loads of the penetrator, and slime on the downside of the penetrating cone 1 can be replaced toward the upside of the penetrating cone 1 forcibly. |
