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<p>This study investigates the seismic stability of mechanically stabilized earth <i>(MSE)</i> walls using a simplified pseudo-static approach, incorporating the mobilized tensile strength of geosynthetics. A new analytical formulation is developed to estimate seismic active earth pressure, addressing limitations in existing methods that often oversimplify reinforcement behavior. The proposed approach is validated through shaking table tests, demonstrating its accuracy in predicting seismic responses. A parametric analysis examines the effects of seismic acceleration, failure plane inclination, and soil properties on the seismic active earth pressure coefficient (<i>K</i><sub><i>ae</i></sub>). Results indicate that increasing seismic acceleration raises <i>K</i><sub><i>ae</i></sub>, while a rise in backfill friction angle from 34° to 44° reduces <i>K</i><sub><i>ae</i></sub> by 67.5%. Factor of safety analysis confirms <i>MSE</i> wall stability for backfill friction angles above 38° when <i>k</i><sub><i>h</i></sub> and <i>k</i><sub><i>v</i></sub> are ≤ 0.3 and ≤ 0.15, respectively. These findings provide valuable insights for geotechnical engineers and researchers in designing resilient <i>MSE</i> walls.</p>

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Seismic Stability Analysis of Geosynthetic Reinforced MSE Walls Using Simplified Pseudo-Static Approach

  • 期刊论文

  • 发表日期：

    2025年5月23日

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  • T. S. Bandyopadhyay,
  • P. Chakrabortty,
  • A. Hegde

摘要

This study investigates the seismic stability of mechanically stabilized earth (MSE) walls using a simplified pseudo-static approach, incorporating the mobilized tensile strength of geosynthetics. A new analytical formulation is developed to estimate seismic active earth pressure, addressing limitations in existing methods that often oversimplify reinforcement behavior. The proposed approach is validated through shaking table tests, demonstrating its accuracy in predicting seismic responses. A parametric analysis examines the effects of seismic acceleration, failure plane inclination, and soil properties on the seismic active earth pressure coefficient (Kae). Results indicate that increasing seismic acceleration raises Kae, while a rise in backfill friction angle from 34° to 44° reduces Kae by 67.5%. Factor of safety analysis confirms MSE wall stability for backfill friction angles above 38° when kh and kv are ≤ 0.3 and ≤ 0.15, respectively. These findings provide valuable insights for geotechnical engineers and researchers in designing resilient MSE walls.