Investigation of soil deformation characteristics during pullout of a ribbed reinforcement using X-ray micro CT

Steel-strip reinforced earth walls stabilize through the pullout resistance of reinforcements. Soil dilation during ribbed reinforcements may contribute to evolution resistance; however, few studies have clarified this mechanism by investigating how soils behave with increasing displacement. The ribs enhance resistance, although influence rib dimensions on displacement has not been sufficiently revealed. In present study, a triaxial apparatus is developed and tests are conducted using different rib-inclination angles under isotropic stress. strain fields in investigated X-ray micro CT digital image correlation technique. It found that larger provide higher at an early stage because bearing related more significant soil densification above ribs. With displacement, come as almost one same since rigid wedge passive failure generated This tendency results similar deformation characteristics levels for every reinforcement beyond state, different.