STRACTURAL SIMULATION ON AN OPEN-WING-TYPE GROUND ANCHOR

Abstract

The anchor method involves connecting a structure or a slope with the anchorage zone by
using the frictional force between the grouting material and the surrounding ground to stabilize the structure
or slope. However, over a long period of time said friction from traditional anchoring methods has been
known to decrease, resulting in decreased anchor pullout resistance and ultimately, in anchor pull out. An
open-wing type (OW) anchor method developed by our research group is a new type of earth anchor method,
in which we use open wings for pullout resistance. Hence, this method can solve problems associated with
existing methods. This study suggests an optimum structure for the parts that open in the OW anchor using a
numerical analysis, ANSYS (FEM). Three types of 3D analytical models – rotation axis type, bended steel
sheet type, and impaction type – are used. The analysis results show the optimum structure to be the
impaction type structure, and simulations show that with a base metal yield strength safety factor of 1.5, an
OW anchor could generate approximately 4250 N of extreme pullout resistance.