APPLICATION OF THE MECHANICS OF GRANULAR MEDIA FOR SOLVING THE PROBLEMS OF GEOTECHNICAL ENGINEERING
Ali A. Al-Robay1 , Sura A. Saadoon2, Kadhim A. Al-Abbas3
1Department of Civil Engineering, College of Engineering, Al-Qadisiyah University.
2Department of Roads and Transport Engineering, College of Engineering, Al-Qadisiyah University,
3Department of Civil Engineering, College of Engineering, Thi-Qar University
Geotechnical engineering is one of the key tools for the development of different area of human activities, including the transport industry. For example, predicting the behavior of road embankments under surface loads is a key factor in assessing engineering solutions. Currently, creation of virtual computer tests of soil structures under the action of surface pressure and calculation of the strain-stress state of loose soil are burning issues being advantageously solved by the finite element method (FEM), via software packages, such as Plaxis. At the same time, the search for new approaches to calculations and the development of existing theories are still relevant, since alternative theories can expand the scope of application or change the approach to solving the assigned task. Based on the data obtained, the method for determining the coefficient of soil distribution capacity by the finite element method, successfully implemented via the Plaxis software package, was substantiated for the first time, thereby significantly expanding the applicability of the mechanics of granular media in geotechnical engineering. The possibility of applying the equations of mechanics of granular media, as an alternative method, for calculating the distribution of vertical stresses in granular material under various combinations of surface loads, has been proved. The comparison results, obtained from the solution of this task via the Plaxis software package, are presented. The data obtained allow making a conclusion about the convergence in the computational results for the values obtained using the MGM and the Plaxis software packages, including when compared with the results of laboratory tests. Based on the results that have been achieved, the dependences of the MGM can be used to determine the pattern of the stress distribution in loose soils, depending on the action of surface loads.
Keywords Mechanics of granular media, weakly cohesive soils, superposition principle, multiple surface