This study presents a systematic numerical analysis to assess the effect of reinforcement embedment on the load-settlement characteristics of model strip footing over granular soil medium. Additionally, a parametric study was extended to examine the influence of various geometrical variations, such as reinforcement embedment depth, the horizontal length of reinforcement and number of layers of reinforcements on mobilized tensile stresses in the soil mass. The parameters mentioned above was modeled using a two-dimensional finite element (FEM)-based numerical tool (ABAQUS) to evaluate model footing load settlement characteristics (B = 0.1 m) with different reinforcement configurations. Finally, an optimum configuration has been recommended. The results shows that the bearing capacity improved by around 54.64% when reinforced with three layers of geotextile reinforcement with optimal depth of the top embedment and the breadth of reinforcement as 0.25 and 5 times the breadth of the footing, respectively.

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Load-Settlement Characteristics of Geosynthetic Reinforced Granular Soil: A Numerical Study

  • Tanmoy Shil,
  • Sujit Kumar Pal

摘要

This study presents a systematic numerical analysis to assess the effect of reinforcement embedment on the load-settlement characteristics of model strip footing over granular soil medium. Additionally, a parametric study was extended to examine the influence of various geometrical variations, such as reinforcement embedment depth, the horizontal length of reinforcement and number of layers of reinforcements on mobilized tensile stresses in the soil mass. The parameters mentioned above was modeled using a two-dimensional finite element (FEM)-based numerical tool (ABAQUS) to evaluate model footing load settlement characteristics (B = 0.1 m) with different reinforcement configurations. Finally, an optimum configuration has been recommended. The results shows that the bearing capacity improved by around 54.64% when reinforced with three layers of geotextile reinforcement with optimal depth of the top embedment and the breadth of reinforcement as 0.25 and 5 times the breadth of the footing, respectively.