Effect of geogrid stiffness on the resistance behavior of reinforced embankment under loading

In this study, the two type model loading tests were carried out to evaluate the effect of geogrid stiffness on the resistance behavior of reinforced embankment which have the wrapped around wall system under loading. One test was to evaluate failure mechanism of reinforced embankment under loading, aluminum bars to simulate ground were used. The another test was to evaluate the relationship between the stability of reinforced embankment and reinforcement behavior in the soil, Toyoura sand was used. Test results are summarized as follows. (1)In the both of the two type tests, slip line in reinforced case arises more inner part in embankment than non-reinforced case. (2)Reinforced using higher stiffness reinforcement, embankment resistance to the higher surcharge. (3)A cause that reinforced embankment behavior in loading change from linear to non-linear is different in according to reinforcement stiffness. (4)The rapped around wall system using high stiffness reinforcement stabilize the active zone in reinforced area.