Graphic-Analytical Method for Calculating the Settlement of a Pile in a Multilayer Array, Taking into Account the Detachment and Slipping of the Pile Along the Ground

A graph-analytical solution to the problem of interaction of a single pile with a three-layer soil base is proposed to determine the settlement, taking into account the possibility of relative displacement of the pile by the soil. The proposed method involves the determination of the components of the stress-strain state of the soil on the basis of the elastic analytical solution and the introduction of strength criteria along the lateral surface and on the bottom of the pile to account for the nonlinear operation of the soil. After exhaustion of bearing capacity in a certain section of the pile, this section is switched off from further work, it is assumed that the pile can move and slip on the soil, and further applied load will be redistributed to other sections of the pile, where the reserve of bearing capacity of the soil has not yet been exhausted. In order to verify the proposed graph-analytical solution, a comparative analysis with the numerical method performed in the elastic-plastic formulation in the geotechnical software package Plaxis 2d was performed. Based on the results of the performed calculations, graphs of the dependence of settlements on loads were plotted, conclusions were drawn about the possibility of using the graph-analytical method when considering several layers of soils with different physical and mechanical properties, and prospects for further development and improvement of the graph-analytical method were proposed.

A.Z. TER-MARTIROSYAN, Doctor of Sciences (Engineering), Professor of the Department of Soil Mechanics and Geotechnics (This email address is being protected from spambots. You need JavaScript enabled to view it.),
V.V. SIDOROV, Candidate of Sciences (Engineering), Docent of the Department MGiG NIU MGSU, Research Center “Geotechnics named after Z.G. Ter-Martirosyan”,
A.S. ALMAKAEVA, Junior Researcher of Research Center “Geotechnics named after Z.G. Ter-Martirosyan” (This email address is being protected from spambots. You need JavaScript enabled to view it.)

National Research Moscow State University of Civil Engineering (26, Yaroslavskoye Highway, Moscow, 129337, Russian Federation)

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