APPLICATION OF NONLINEAR REGRESSION METHOD TO CALCULATE APPARENT COHESION OF GEOGRID- REINFORCED SOILS

Abstract

In this article, the authors use Plaxis 2D software to simulate triaxial testing that shows the behavior of the geogrid reinforced soil structures under the effect of loads. Based on the Mohr - Rankine limit equilibrium conditions, the apparent cohesion generated by the geogrid layers is determined. The article has established 62 different numerical simulation problems on input parameters such as the internal friction angle of soil, the distance of layers, and the strength of geogrid. From numerical analysis results, combined with the nonlinear regression method, the authors have built a formula to determine the apparent cohesion of the reinforced soil structures.