• discrete simulations of shear zone patterning in sand in earth pressure problems of a retaining wall

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
    • تعداد بازدید: 741
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the intention of the paper is to check the capability of a discrete element method (dem) to simulate a pattern of quasi-static shear zones in initially dense sand. discrete calculations were carried out with a rigid and very rough retaining wall, undergoing passive and active horizontal translation, rotation about the top and rotation about the toe. to simulate the behavior of sand, the three-dimensional spherical discrete model was used allowing for grain rolling resistance. the geometry of calculated shear zones was qualitatively compared with experimental results of laboratory model tests using x-rays and digital image correlation technique (dic), and quantitatively with finite element results obtained with a micro-polar hypoplastic constitutive model. the results show that a discrete model is able to realistically predict the experimental pattern of shear zones in the sand interior. a satisfactory agreement with experiments and finite element calculations was achieved.

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