| 摘要 |
PURPOSE:To construct an underground pile having a high bearing strength by a simplified method in which a cylinder tipped with a nozzle is penetrated into the ground, and while turning the cylinder, a solidifying agent is injected from the nozzle into the surrounding ground. CONSTITUTION:An earth auger 4 provided inside a cylinder 1 is tured and the cylinder 1 is reversely turned to penetrate both the cylinder and the auger 4 into the ground. When the tip of the earth auger 4 reaches the inside of a support layer A and the tip of the cylinder 1 reaches near the support layer A, the earth auger 4 is pulled out while being turned reversely, a solidifying agent a is injected from a nozzle 3 and the cylinder 1 is reversely turned so as to press its tip side into the inside of the support layer A, and thereby the solidifying agent is permeated from the inside and outside of the tip of the cylinder 1 into the ground and coagulated to construct a spherical footing B. Then, the hole formed after pulling out the augeer 4 is embedded with soil and sand to construct an underground pile. |
