METHOD AND DEVICE FOR BURYING PRECAST PILE

• Main Author: ENOKI TOSHIO
• Format: Patent
• Language: English
• Published: 26.12.2002
• Edition: 7
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

PROBLEM TO BE SOLVED: To provide a method of burying a precast pile that can improve the efficiency of precast pile burying work and reducing the burying cost of the precast pile by eliminating the pollution of a work site caused by the overflow of soil cement onto the ground and dispensing with the disposal of waste soil by making effective use of excavated soil. SOLUTION: A casing 5 and an auger screw 6 positioned in the casing 5 are rotated to drill a hole from the ground to the prescribed underground depth, and when the tip of the casing 5 reaches an underground bearing layer, cement milk of rich mix is filled into the tip part inside the casing 5 from the tip of the auger screw 6 to form a cement milk column of the cement milk and excavated soil A. Then the rotation of the auger screw 6 is stopped to pull up the auger screw 6. The excavated soil A on the blades of the auger screw 6 is thereby removed from the inside of the casing 5. The existing pile 8 is then inserted in the casing 5, and the tip part is subjected to foot protection with the soil cement column 9. Soil cement B is prepared using the excavated soil A previously discharged from the casing 5, and the soil cement B is filled between the casing and the existing pile 8, thereby dispensing with the disposal of waste soil of the excavated soil A.