ABSTRACT
Nailing method, is one of the common methods for stabilizing slopes. In this method, however, if the displacement of the soil is more than the tolerable limits, irreplaceable damage will occur. In this study, a vertical trench reinforced with nails was tested in a geotechnical centrifuge device under acceleration of 30g where the settlement of the strip footing placed nearby the trench was monitored during the excavation. The displacement of the nailed wall during excavation and loading was recoded using continuous photography as well. The results show that decreasing spacing between the nails in a certain area decreases soil settlement at top of the slope. Also, the reduction in settlement due to excavation in the region above the nails is not noticeable when moving away from the slope edge. In this region, the settlement is almost uniform and with increasing the distance of footing from the trench edge, horizontal displacement of nailed wall decreases. This reduction in horizontal displacement is also observed with decreasing the spacing between the nails.
