Bearing Capacity and Settlement of Clay Bases Under Block Cyclic Loading
Introduction: The existing methods of calculating the bearing capacity and deformation of foundation foundations have been developed mainly for the case of short-term single static loading or cyclic loading with constant parameters during the entire operation period. The effect of cyclic loading of non-stationary regimes on the behavior of soil bases is practically not studied. In this connection, studies have been carried out to develop a methodology for calculating the bearing capacity and settlement of clayey bases under block cyclic loading. Materials and Methods: To achieve the purpose of this paper, experimental studies of clay foundations in triaxial compression and tray test devices, as well as theoretical studies to determine the bearing capacity and settlement of clay foundations under different loading regimes were carried out. Results: On the basis of existing calculations of bearing capacity and settlement of foundations and the study of the behavior of clayey soils under regime loading, the equations in compact form are obtained, which make it possible to take into account the peculiarities of deformation of clayey soils and significantly reduce the complexity of calculations with a sufficiently high accuracy of calculations, are used in the development of methods for calculating the bearing capacity and settlement of clayey bases under block cyclic loading. Conclusions: A method for calculating the bearing capacity of clay foundations under block cyclic loading is proposed and an engineering method for calculating the settlement of clay foundations is developed, based on the method of layer-by-layer summation, which takes into account the simultaneous change in the spatial stress-strain state and mechanical characteristics of soils in the process of mode block cyclic loading.
