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<p>This study examines geosynthetic-reinforced soil walls constructed from poorly graded marginal soils. Constructing traditional reinforced soil walls necessitates granular materials that meet international standards. Geological variability in India frequently necessitates the utilization of marginal soils due to resource limitations. The soils possess high particle density, low internal friction, strong cohesion, and limited permeability, complicating wall stability. This study employs a two-dimensional finite element model to simulate geosynthetic reinforced walls under various field conditions, considering the properties of reinforcement and backfill. Parametric analyses investigated wall height, soil characteristics, and tensile strength of reinforcement. Polymer geogrids enhance marginal soils, rendering them a cost-efficient and sustainable substitute for traditional backfill in GRS walls. A clipped/nailed geogrid anchorage system can mitigate marginal fill bulging and prevent global failures. This paper elucidates the clipped, nailed, and anchored geogrid mechanism. Clipped geogrid possesses superior mechanical interlocking and bearing surfaces compared to straight geogrid, hence enhancing pull-out resistance. A field-scale study of a 10.8&#xa0;m GRS wall validated the effectiveness of the restorative treatments.</p>

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Mitigating Deformation in Geosynthetic Reinforced Soil Wall Backfilled with Poorly Graded Marginal Soil

  • 期刊论文

  • 发表日期：

    2026年2月25日

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  • Mainak Majumder,
  • Rahul Shende,
  • Srinivasan V.

摘要

This study examines geosynthetic-reinforced soil walls constructed from poorly graded marginal soils. Constructing traditional reinforced soil walls necessitates granular materials that meet international standards. Geological variability in India frequently necessitates the utilization of marginal soils due to resource limitations. The soils possess high particle density, low internal friction, strong cohesion, and limited permeability, complicating wall stability. This study employs a two-dimensional finite element model to simulate geosynthetic reinforced walls under various field conditions, considering the properties of reinforcement and backfill. Parametric analyses investigated wall height, soil characteristics, and tensile strength of reinforcement. Polymer geogrids enhance marginal soils, rendering them a cost-efficient and sustainable substitute for traditional backfill in GRS walls. A clipped/nailed geogrid anchorage system can mitigate marginal fill bulging and prevent global failures. This paper elucidates the clipped, nailed, and anchored geogrid mechanism. Clipped geogrid possesses superior mechanical interlocking and bearing surfaces compared to straight geogrid, hence enhancing pull-out resistance. A field-scale study of a 10.8 m GRS wall validated the effectiveness of the restorative treatments.