Abstract: In engineering, packaged geogrid reinforced soil retaining wall’s design still use anchorage wedge method based on limiting equilibrium theory that doesn’t consider the progress of retaining wall’s deformation occurrence and accumulation before reach limitation. Retaining wall’s horizontal displacement is an important appearance of its stability. By using FEM, the effect aroused by different engineering factors is analyzed. The analytical results show: results of FEM fit well with in-situ test and it proves the FEM results are reasonable; reinforced soil retaining wall’s post-construction horizontal displacement enlarged from bottom to top; geogrid’s stiffness, length and vertical span have apparent effect for horizontal displacement, and should choose suitable design value to get desirable engineering behavior; the magnitude and location of outer load above retaining wall have corresponding effect for horizontal displacement that effect becomes unapparent when the outer load located besides the reinforced zone.

Key words: geogrid, reinforced soil, retaining wall, horizontal displacement