EARTH-ANCHOR-METHOD AND EARTH-ANCHOR APPARATUS FOR SLOPE-REINFORCEMENT-CONSTRUCTION

摘要

An earth anchor method and an earth anchor structure are provided to maximize anchor forces of an earth anchor by press-fitting an expansion anchor into a perforated hole using tensile strength and anchoring the ground using an earth anchor structure itself. An earth anchor method comprises the steps of preparing an expansion anchor(20) projected from an anchor body(14) of an earth anchor structure into a perforated hole, making the expansion anchor contact with a compressor(34) by shifting taper planes(30,32) which convert the tensile strength of an operating steel wire(28) laterally, and press-fitting the expansion anchor into the perforated hole by inserting an earth anchor structure with the expansion anchor into the perforated hole and tensing the operating steel wire connected with the compressor. An earth anchor structure contains: an anchor body coupled with a steel wire(10) by a taper cone(12); an anchor cap installed to the front of the anchor body; an expansion anchor installed between the anchor cap and the anchor body to be projected radially by elastic force of a spring(18) and provided with a hanging projection(22), hanging grooves(24) and a locker(26); and a compressor provided with the shifting taper plane converting the tensile strength of an operating steel wire on the rear of the expansion anchor and the shifting taper plane contacted with the shifting taper plane on the end of the locker.