Abstract
When HDPE Geomembranes are installed in landfill, are subjected to differential settlement, tensile strain is induced. Therefore maximum strain in geomembrane should be estimated to check safety for tensile failure. Tensile behavior depends on the shape of settlement, thickness of protecting layer, the confining pressure and the friction property between the geomembrane and the ground. In this paper, model tests where Geomembrane was subjected to differential settlement were conducted under conditions that thickness of protecting layer and stiffness of geomembrane are constant, and the surcharge pressure is varied. The effects of displacement and surcharge on maximum strain, distribution of strain and elongation of the geomembrane were compared to the calculated results based on Trough Model and Elastic Formula.
