지오셀로 보강된 사질토의 응력-변형 거동

초록

In this study, the stress-strain behavior of composite geocell-soil systems under triaxial condition and the influence of strength due to the presence of geocell are studied. For the research a series of triaxial tests carried out on sand specimens confined by flexible-walled single rubber cell. Three different densities of soil were used for tests. In general, it was observed that the sand specimen develops an apparent cohesive strength due to the confinement by the geocell. The magnitude of this cohesive strength seem to be dependant on the properties of the geocell material. The test results have shown that the geocell material for this study not only develops the apparent cohesion but also increases of the angle of friction where as geosynthetic material in the references showed only the increase of apparent cohesion. From the application of strength properties of geocell-soil composites, it was recognized that the determination of the peak strength in hyperbolic parameters within the range of stress-strain that applied to the design is very important because the behavior of the geo-cell composites are unconventional.