Authors : S.M. Farid Astaneh and Omid Ahangar Saryazdi
Abstract: This study presents the results of numerical analysis carried out with a new manufacturing method for reinforced soil structures with geosynthetic known as reinforced prestressed soil. The concept of Pre-stressed Reinforced Soil (PRSi) was developed to increase the load bearing capacity of a reinforced soil structure and introduced to improve its displacement behavior. PRSi concept was validated by laboratory studies. The positive effects of reinforcement prestressing on the improvement of resistance and reduce the settlement of a reinforced granular beds located on a weak soil was analyzed by a series of bearing capacity at the laboratory scale. The effect of parameters including the resistance of the underlying weak soil, the thickness of the granular bed, presressing force’s size, the extension of presressing force, the number of reinforcement layers and geogrid axial stiffness are analyzed. A soil element is taken and its behavior in a place under load is analyzed. The results of this research indicate that the models with geogrid vertical distances of 3, 2, 4 and 1 are in a better condition, respectively and the vertical distance of 3 presents a result better than other distances.
S.M. Farid Astaneh and Omid Ahangar Saryazdi, 2015. Numerical Modeling Analysis of the Geogrid Pre-Stress Effects on Granular Soils Parameters by Finite Element Method. Journal of Engineering and Applied Sciences, 10: 157-166.