<p>This study proposes a novel hybrid anchor system that combines the frictional resistance of ground nails with the passive resistance of vertical plate anchors to enhance pullout performance in retaining structures. The anchor system was developed for use as a reinforcement material in embankment-type reinforced retaining walls. The anchor system was prefabricated using corrugated pipes filled with cement grout, allowing it to be utilized as a reinforcement material for embankments. A model pullout test in crushed stone was conducted to determine the ultimate pullout capacity, supported by large direct shear tests using a three-dimensional printed corrugated anchor surface and large triaxial compression tests to determine the mechanical parameters of the crushed stone. Direct shear tests under normal stresses ranging from 50 to 250&#xa0;kPa showed that the interface friction coefficient decreases with increasing normal stress and follows a power-law relationship. Triaxial compression tests conducted at confining pressures of 100, 200, and 300&#xa0;kPa indicated a friction angle of approximately 45°. Model pullout tests measured an average ultimate pullout capacity of 11.84 kN. Component analysis revealed that passive resistance was the dominant component, contributing 63% of the total resistance, while anchor surface friction contributed 25% and reinforcement bar friction contributed 12%. Furthermore, A parametric study using a validated numerical model in PLAXIS 3D, based on a 10&#xa0;m-high retaining wall, was conducted to back-calculate the bearing capacity factor (<i>N</i>_<i>q</i><i>)</i> as a function of embedment ratio (<i>h/D</i>), showing a logarithmic increase in <i>N</i>_<i>q</i> with increasing embedment depth until a limiting value is reached. The system, tested under conditions typical of South Korean gravel backfill, offers enhanced pullout resistance even at shallow depths and reduces the need for drilling, making it a practical alternative for mountainous regions.</p>