3-D Finite Element Study of Embankment Resting on Soft Soil Reinforced with Encased Stone Column

2021 
This paper presents the outcomes of a 3-D finite element analysis performed to study the time-dependent behavior of embankment resting on the geosynthetic-encased stone column (GESC). The numerical analysis is carried out on both fixed and floating GESC. The results of the study show the effect of encasement stiffness, encasement length and length of the geosynthetic encased stone column on time-dependent behavior of the system. The use of GESC has provided significant improvement in reducing the generation and dissipation of excess pore water pressure, settlement and lateral displacement of the column along its length. The study indicates that the higher stress concentration in the case of GESC results in better time-dependent behavior. Additionally, the results also confirm that there is an optimum value of encasement stiffness, encasement length and length of geosynthetic-encased column beyond which no substantial improvement is attained.
    • Correction
    • Source
    • Cite
    • Save
    • Machine Reading By IdeaReader
    31
    References
    0
    Citations
    NaN
    KQI
    []