FOUNDATION ON LAYERED SOIL WITH GEOGRID REINFORCEMENT - EFFECT OF A VOID

Results of laboratory model tests to determine the ultimate bearing ca pacity variation of a strip foundation on a stronger sand layer underl ain by a near-saturated weaker clay layer, with and without geogrid re inforcement at the sand-clay interface, are presented. Also included i n this study is the effect of the presence of a void with a rectangula r cross-section in the weaker clay layer immediately below and paralle l to the central axis of the foundation. Based on the model test resul ts, the variations of the ultimate bearing capacity and the bearing ca pacity ratio with the depth of the void below the foundation are prese nted.