Equation of Limit Condition of the Three-Parameter Mohr-Coulomb Criterion

The purpose of the article is to determine the dependence of the parameters, the strength of sand reinforced by foamed bitumen on the content of organic binder. Tests were carried out by uniaxial compression using a measuring and computing complex. As a result, the ultimate compressive strength and the parameters of shear resistance are determined. To determine the angle of internal friction by uniaxial compression, a new technique is proposed, based on measuring the angle of inclination of the shear area to the main axes. According to the experimental work, mathematical models of the dependence of strength indicators from the content of organic binder in the Irtysh sand have been developed.

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Calculation of shear stresses in the soil of the subgrade using empirical plasticity conditions

Aleksandrov

Dolgih

Калинин

2020

J. Phys.: Conf. Ser.

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The aim of the work is to replace the criterion of the original Mohr – Coulomb criterion with an empirical plasticity condition in which the limit state arises at deformation εlim<15 %. As a result of the analysis of experimental data on testing soils by triaxial compression, an empirical plasticity criterion is obtained. The limiting state by the empirical criterion occurs when the sample is deformed by 10–12%. The shear stresses calculated by this plasticity condition exceed the shear stresses calculated by the Mohr – Coulomb criterion. Therefore, the application of the proposed criterion in the calculation of pavement by shear resistance in the soil of the subgrade requires an increase in the thickness of the structural layers, compared with the traditional calculation, which is based on Mohr – Coulomb.

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Equation of Limit Condition of the Three-Parameter Mohr-Coulomb Criterion

Cited by 4 publications

References 17 publications

Influence of Moisture Content of Loamy Soil on Shear Resistance Parameters

Influence of Moisture Content of Loamy Soil on Shear Resistance Parameters

Strength indices of sand reinforced by foamed bitumen

Calculation of shear stresses in the soil of the subgrade using empirical plasticity conditions

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