| 摘要 |
PURPOSE:To give a drawing resistance to an anchor by a method in which an anchor with ?-shaped notches is driven into a banking and then an expanding agent is injected into the upper end opening of the anchor so as to erect the ?-shaped tongue pieces of the notches by its expanding pressure. CONSTITUTION:An anchor A is driven through a hole 8 into a banking, and then an expanding agent 10 is injected from the upper end opening of the anchor A to a position where notches 2 and 3 are provided. Whereupon, the ?-shaped tongue pieces 4 and 5 of the anchor A are erected by the expanding pressure of the expanding agent 10, whereby conferring a drawing resistance originated from the tongue piece 4 and a bearing force originated from the tongue piece 5 upon the anchor A. After the expansion of the expanding agent 10, a closing metal is attached to the upper end opening of the anchor A projected from a retaining wall 7, and a tension is given to the anchor by a clamping means, e.g., nut, etc. |
