CONSTRUCTION METHOD FOR SYNTHETIC PILE HAVING KNOT AND PILE AND PROTRUSION TOOL USED FOR SAID CONSTRUCTION METHOD

摘要

PURPOSE:To construct a synthetic pile having a high support force, by a method wherein a pile having protrusion arms radially protruded because of rotation is placed in an excavated hole, and after the pile is rotated to form knotform expansion parts, soil cement is cured between a hole wall and the pile. CONSTITUTION:A pile periphery curing solution, e.g., cement milk, is injected in a pile hole excavated by an earth auger, a pile 7 having protrusion arms 6 radially protruded occasioned by rotation is placed in the pile hole, and is rotated to form knots 10. Cement milk is injected between a pile hole 3 and the pile 7, and is cured as soil cement 9. This constitution enables facilitation of construction of a synthetic pile having knots.