@article{MAKHILLJEAS201510713510,
    title = {Numerical Modeling Analysis of the Geogrid Pre-Stress Effects on Granular Soils Parameters by Finite Element Method},
    journal = {Journal of Engineering and Applied Sciences},
    volume = {10},
    number = {7},
    pages = {157-166},
    year = {2015},
    issn = {1816-949x},
    doi = {jeasci.2015.157.166},
    url = {https://makhillpublications.co/view-article.php?issn=1816-949x&doi=jeasci.2015.157.166},
    author = {Omid Ahangar and},
    keywords = {Pre-stress,granular soil,innovative construction method,weak soil,PRSi},
    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 (PRS<SUB>i</SUB>) was developed to increase the load bearing capacity of a reinforced soil structure and introduced to improve its displacement behavior. PRS<SUB>i</SUB> 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&#146;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.}
    }