FAILURE CRITERION WITH CONFINING EFFECT ON GEOGRID-REINFORCED SOIL AND ITS VERIFICATION

Abstract

Based on a proposed method to evaluate the confining effect on geogrid-reinforced soil, the confining effect is introduced into a failure criterion on the reinforced soil and stress condition of reinforced soil at failure is expressed by using Mohr's stress circle. On the proposed failure criterion the tensile force of geogrid is assumed to be equal to the Rankine's active earth pressure. As a result of comparing the two values of horizontal earth pressure which is calculated from the failure criterion and measured on large-scale geogrid-reinforced soil wall, the validity of the proposed failure criterion is clarified.