This paper describes bearing capacity analysis of geogrid reinforced foundation ground using rigid plastic finite element method. In order to take into account the reinforcing effect in the analysis, a composite type model including
geogrid and the surrounding soil is proposed. The effectiveness of proposed method is firstly ve fied by conducting comparative studies with both theoretical and test results. Then, a series of parametric study by changmg the . reinforcement
conditions, i.e. length, depth and strength of geogrid, is conducted. Finally, a simple design chart based on the analysis results is proposed for the bearing capacity of geogrid reinforced soft foundation ground.