EXPERIMENTAL STUDY ON THE INTERACTION MECHANISM BETWEEN GEOGRID AND EXPANSIVE ROCK BY PULL-OUT TEST

摘要

The interaction mechanism between geogrid and mid-weak swelling rock in the Project of South-to-North Water Transfers Projects is investigated by pull-out tests conducted at the modified laminated shear test apparatus.Quasi-friction angle and quasi-cohesion force of the interface are obtained through the experiments of two types of geogrids at different vertical loadings. Furthermore, the distribution law of interface frictional resistance at the different location of geogrid is analyzed. Finally, distribution of additional shear stress in soil induced by IFR is preliminary investigated.