INFLUENCE OF VISCOPLASTIC PROPERTIES OF GROUND ON THE BEHAVIOR OF THE BASE

Statement of the problem. The calculation of core structures should consider as many prominent features of ground as possible and the technology factors affecting the stress-strain state of the base. In this regard, the aim of this work is to develop computational and theoretical apparatus, software and calculation methods to predict the deformation and load-carrying capacity of bases, given the plastic and rheological properties (filtration consolidation, creep) of ground.Results. The stress-strain state of ground is described using a modified Cam-Clay model along with the model of filtration consolidation by Florin Biot and the Duvaut-Lions viscoplastic model. The algorithm and the program of the method of finite elements for the calculation of processes of viscoplastic deformations of bases in the three-dimensional setting were developed. A numerical modelling of the behavior of the “ground-base” system was performed.Conclusions. Based on the results of numerical modelling, the influence of rheological properties of ground on the deformation and the bearing capacity of ground at loading by a rigid stamp device was revealed. The calculations performed have indicated the efficiency of the developed algorithm.