Springer series in geomechanics and geoengineering, 2018
Numerical analyses based on Finite Element Method (FEM) to solve geotechnical problems are carrie... more Numerical analyses based on Finite Element Method (FEM) to solve geotechnical problems are carried out using software implementing various soil models. Currently, Hardening Soil Model (HS) is often used in the geotechnical engineering practice. One of the parameters describing the model is the unloading-reloading (Eur) modulus. This paper presents triaxial test results of cohesive soils aimed at determination of unloading-reloading (Eur) modulus. Based on test results, empirical correlations for evaluation of Eur modulus were determined. The correlations determine Eur modulus on the basis of plasticity index and vertical effective stress.
Przegląd Naukowy Inżynieria i Kształtowanie Środowiska, 2018
Soil parameters from triaxial tests are required for application of hardening soil small strain m... more Soil parameters from triaxial tests are required for application of hardening soil small strain model in the geotechnical numerical analyses. In addition to the parameters such as the initial stiffness modulus (E0), stiffness modulus at 50% of the deviatoric stress value (E50), unloading– –reloading modulus (Eur) should be evaluated. The paper presents the test results for soil samples collected from the boreholes approximately 80 m deep. The main focus is put on evaluation of Eur parameter as requiring more advance tests in comparison to E0 and E50 parameters that may be evaluated on the basis of standard triaxial tests with shear wave velocity measurement. Based on the triaxial test results a correlation formula is proposed between Eur modulus and basic physical properties of soil and changes of effective stress values. The triaxial test procedures aimed at evaluation of E0, E50 and Eur are also presented.
Numerical analyses based on Finite Element Method (FEM) to solve geotechnical problems are carrie... more Numerical analyses based on Finite Element Method (FEM) to solve geotechnical problems are carried out using software implementing various soil models. Currently, Hardening Soil Model (HS) is often used in the geotechnical engineering practice. One of the parameters describing the model is the unloading-reloading (Eur) modulus. This paper presents triaxial test results of cohesive soils aimed at determination of unloading-reloading (Eur) modulus. Based on test results, empirical correlations for evaluation of Eur modulus were determined. The correlations determine Eur modulus on the basis of plasticity index and vertical effective stress.
Springer series in geomechanics and geoengineering, 2018
Numerical analyses based on Finite Element Method (FEM) to solve geotechnical problems are carrie... more Numerical analyses based on Finite Element Method (FEM) to solve geotechnical problems are carried out using software implementing various soil models. Currently, Hardening Soil Model (HS) is often used in the geotechnical engineering practice. One of the parameters describing the model is the unloading-reloading (Eur) modulus. This paper presents triaxial test results of cohesive soils aimed at determination of unloading-reloading (Eur) modulus. Based on test results, empirical correlations for evaluation of Eur modulus were determined. The correlations determine Eur modulus on the basis of plasticity index and vertical effective stress.
Przegląd Naukowy Inżynieria i Kształtowanie Środowiska, 2018
Soil parameters from triaxial tests are required for application of hardening soil small strain m... more Soil parameters from triaxial tests are required for application of hardening soil small strain model in the geotechnical numerical analyses. In addition to the parameters such as the initial stiffness modulus (E0), stiffness modulus at 50% of the deviatoric stress value (E50), unloading– –reloading modulus (Eur) should be evaluated. The paper presents the test results for soil samples collected from the boreholes approximately 80 m deep. The main focus is put on evaluation of Eur parameter as requiring more advance tests in comparison to E0 and E50 parameters that may be evaluated on the basis of standard triaxial tests with shear wave velocity measurement. Based on the triaxial test results a correlation formula is proposed between Eur modulus and basic physical properties of soil and changes of effective stress values. The triaxial test procedures aimed at evaluation of E0, E50 and Eur are also presented.
Numerical analyses based on Finite Element Method (FEM) to solve geotechnical problems are carrie... more Numerical analyses based on Finite Element Method (FEM) to solve geotechnical problems are carried out using software implementing various soil models. Currently, Hardening Soil Model (HS) is often used in the geotechnical engineering practice. One of the parameters describing the model is the unloading-reloading (Eur) modulus. This paper presents triaxial test results of cohesive soils aimed at determination of unloading-reloading (Eur) modulus. Based on test results, empirical correlations for evaluation of Eur modulus were determined. The correlations determine Eur modulus on the basis of plasticity index and vertical effective stress.
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Papers by Hubert Daniluk