Evaluation of three-dimensional behavior of soil slopes under the influence of pore water pressure with Rosas software

Abstract

Study of foundation bearing capacity and slope stability has always been a common and practical issue in geotechnical engineering. The combination of these two problems in the presence of pore water pressure adds to the complexity of the problem. In the present study, the effect of pore water pressure on the three-dimensional stability of slopes under concentrated load or the bearing capacity of rectangular foundations located in the vicinity of slopes has been investigated. Then, using a circular rupture mechanism and generalization of the program, the problem is analyzed by the upper boundary limit analysis method, taking into account the pore water pressure in three dimensions. In this regard, with the expansion of the Rosas program as an infrastructure program, it has been able to consider the parameters related to water pressure. Considering that the effective variables, foundation and slope geometry, foundation distance from the sloping edge and soil strength parameters include adhesion and internal friction angle of the soil, the mentioned variables have been analyzed to calculate the bearing capacity of the foundation located on the slope. In the discussion of the bearing capacity of the foundation located on the slope, as the foundation moves away from the edge of the gable, the effect of increasing the pore water pressure on the reduction of the bearing capacity of the foundation also increases.