Determining the influence of physical nonlinearity of soil strength properties on the estimated base resistance

Authors

DOI:

https://doi.org/10.15587/1729-4061.2019.184946

Keywords:

failure criteria by Mohr-Coulomb and A. Shashenko, load on soil, cohesion, angle of internal friction

Abstract

The paper has examined the potential of using nonlinear models of strength in determining the initial critical load on soil, as well as the standardized and estimated base resistance, which makes it possible to reduce labor intensity in the process of determining the strength properties of soils.

Based on the analysis and generalization of results from theoretical studies into geomechanical processes using analytical mathematical methods, the formula modifications have been derived that are intended for determining the initial critical load on soil, as well as the standardized and estimated base resistances.

We have established interrelation between strength, in particular specific cohesion, and the angle of internal friction, which are included in the strength conditions by Mohr-Coulomb and A. Shashenko, thereby making it possible to improve the procedure for calculating external loads on soil.

The dependences of critical loads on base on the mean pressure under the sole of the foundation haven been analyzed in the range of pressure Р=100...500 kPa using the strength conditions by Mohr-Coulomb and A. Shashenko.

It has been established that when using generally accepted estimation formulae to determine the critical loads on base, it is required that the pressure range should be taken into consideration at which the properties of soil strength were determined. In this case, using the Shashenko failure criterion to determine critical loads on base makes it possible to properly consider the impact exerted by the mean pressure on them under the sole of the foundation.

In contrast to dependences used currently in the Ukrainian, Belarusian, Russian regulatory documents, as well as in other countries’ standards, the resulting formulae make it possible to take into consideration the dependences of soil strength properties on the mean pressure on soil under the sole of the foundation. The results obtained make it possible to improve the reliability of determining the initial critical load on soil, as well as the standardized and estimated base resistances. This is achieved by taking into consideration the nonlinearity of the Mohr limiting circles’ envelope using the strength condition by A. Shashenko

Author Biographies

Olexandr Shashenko, Dnipro University of Technology Dmitro Yavornytskyi ave., 19, Dnipro, Ukraine, 49005

Doctor of Technical Sciences, Professor

Department of Construction, Geotechnics and Geomechanics

Vladimir Shapoval, Dnipro University of Technology Dmitro Yavornytskyi ave., 19, Dnipro, Ukraine, 49005

Doctor of Technical Sciences, Professor

Department of Construction, Geotechnics and Geomechanics

Oleksandr Kovrov, Dnipro University of Technology Dmitro Yavornytskyi ave., 19, Dnipro, Ukraine, 49005

Doctor of Technical Sciences, Associate Professor

Department of Ecology and Environmental Technology

Alexandr Skobenko, Dnipro University of Technology Dmitro Yavornytskyi ave., 19, Dnipro, Ukraine, 49005

PhD, Associate Professor

Department of Construction, Geotechnics and Geomechanics

Oleksii Tiutkin, Dnipro National University of Railway Transport named after Academician V. Lazaryan Lazaryana str., 2, Dnipro, Ukraine, 49010

Doctor of Technical Sciences, Associate Professor, Head of Department

Department of Bridges and Tunnels

Kateryna Babii, M. S. Polyakov Institute of Geotechnical Mechanics NAS of Ukraine Simferopolska str., 2A, Dnipro, Ukraine, 49005

PhD, Senior Researcher

Department of Geomechanical Foundations of Open Field Mining Technologies

Oleksandr Samorodov, Kharkiv National University of Civil Engineering and Architecture Sumska str., 40, Kharkiv, Ukraine, 61002

Doctor of Technical Sciences, Associate Professor, Head of Department

Department of Geotechnics and Underground Structures

Sergey Slobodianiuk, Prydniprovska State Academy of Civil Engineering and Architecture Chernyshevskoho str., 24а, Dnipro, Ukraine, 49600

Doctor of Technical Sciences, Professor, Head of Department

Department of Theoretical Mechanics

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Published

2019-11-25

How to Cite

Shashenko, O., Shapoval, V., Kovrov, O., Skobenko, A., Tiutkin, O., Babii, K., Samorodov, O., & Slobodianiuk, S. (2019). Determining the influence of physical nonlinearity of soil strength properties on the estimated base resistance. Eastern-European Journal of Enterprise Technologies, 6(7 (102), 19–27. https://doi.org/10.15587/1729-4061.2019.184946

Issue

Vol. 6 No. 7 (102) (2019): Applied mechanics

Section

Applied mechanics

License

Copyright (c) 2019 Olexandr Shashenko, Vladimir Shapoval, Oleksandr Kovrov, Alexandr Skobenko, Oleksii Tiutkin, Kateryna Babii, Oleksandr Samorodov, Sergey Slobodianiuk

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