| 摘要 |
PURPOSE: A load-bearing structure of an expansion anchor and an installation method thereof are provided to secure a stable tensile force even in soft ground. CONSTITUTION: A load-bearing structure of an expansion anchor comprises a multi-expansion rod, top and bottom couplers(40,50), and a nozzle(60). The multi-expansion rod comprises outer and inner expansion rods(10,20) having a plurality of expansion wings(12). The top and bottom couplers are installed on the top and bottom of the multi-expansion rod. The nozzle, having a plurality of discharge holes(61), is installed on the leading end of a grout hose(70) inserted into the top coupler so that the leading end is reached to the bottom coupler. |
