PERFORMANCE ANALYSIS OF FOUNDATION SOIL REINFORCED WITH GEOTEXTILE

Abstract

This study looks into how Abaqus software is evolving for numerical simulation of the strip of sand foundation soil reinforced with geotextile. Limit load calculations are obtained from a sand strip charged by the footing. There is an equal distance distribution from left to right at the level of the central axis, resulting in model symmetry. The results are generated by Mohr-Coulomb model. At the element type section of Abaqus model, CPE8R elements are used in the left region of the pattern, and finite element CINPE5R types are used for stimulation on the right side where acoustic material is used to prevent any boundary reflects. On the way to estimate the improvement in bearing capacity of reinforced soil using Abaqus model, a numerical model without geotextile and with geotextile elements were developed. The purpose of these two experiments after stimulation in the Abaqus model is to observe a remarkable variation by changing the values of friction angle, dilation angle parameters and also to observe the effect of the load when increasing it progressively. The results determined that due to a progressive bearing capacity load obtained there is at the level of the mesh the failure envelope for unreinforced soil. Also, the soil friction angle with the dilation angle has an important effect on the foundation soil when both parameters are changed, especially the friction angle, which causes more settlements at the beginning of the unreinforced foundation then lowers the bearing capacity value when the consolidation is completed. The reinforced foundation capacity of soil rises once geotextile layers increases. Reinforcement with geotextiles reduces settlements from the beginning of the reinforced foundation soil to the end of the consolidation stages, while also increasing bearing capacity, according to numerical results varying the friction angle. Bearing capacity pressure optimal value retained is 209 Psi with three layers at the depth of 0.82B, N=4 in accordance with the technical, resistant and economic regulations of structures in Civil Engineering.