| 摘要 |
PURPOSE:To enhance the drawing resistance and frictional force of an anchor by a method in which an anchor whose periphery is provided with plural notches and openings is buried in a hole drilled in a banking, and an expandible agent is injected into the upper end opening of the anchor to expand the peripheral portions of the notches. CONSTITUTION:An anchor A with a closing metal 5 is buried in a hole 8 drilled in a banking 7, and an expandible agent 9 is injected into the upper end opening of the anchor A until it reaches a position where plural notches 2 and 3 are provided. Whereupon, the expandible agent 9 expands and hardens and ?- shaped tongue pieces 4 are erected by the expanding pressure of the agent 9 to give a drawing resistance to the anchor A, and at the same time the peripheral portion of the cylinder 1 is expanded as the notch 3 expands to give a frictional force to the anchor A. After the end of the expandible agent 9, a closing metal is attached to the upper end opening of the anchor A projected from a retaining wall 6 and a tension is also given to each anchor A by a clamping means, e.g., nuts, etc. |
