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<p>The disposal of pond ash presents a significant challenge, and improper management can lead to adverse environmental impacts. One potential method for its utilization is as a bulk fill material in mechanically stabilized earth (MSE) walls. While feasibility and numerical studies have been conducted on pond ash, limited research has specifically addressed incorporating its strain-softening behavior into numerical models. Existing models tend to be overly complex, necessitating the development of a more practical approach. This study employs a simplified co-ordinate transformation softening (SCTS) model that simulates the strain-softening response using a co-ordinate transformation technique. The response of Parichha pond ash is examined through experimental investigations, and a simplified numerical model is utilized to analyze the behavior of an MSE wall filled with pond ash. The results are evaluated against those obtained using the Duncan Chang model. The SCTS model reduces maximum wall displacement by approximately 65% for relative densities of 80% and 90%, and by 46% for a relative density of 65%, compare to the conventional model. The reinforcement strains exhibited no significant variation, while the connection loads are slightly higher in the SCTS model.</p>

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Numerical Simulation of Ash Filled MSE Wall Utilizing the Co-ordinate Transformation Softening Model

  • 期刊论文

  • 发表日期：

    2025年11月12日

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  • Ghanta Naga Sireesha,
  • Sajan Malviya,
  • Prishati Raychowdhury

摘要

The disposal of pond ash presents a significant challenge, and improper management can lead to adverse environmental impacts. One potential method for its utilization is as a bulk fill material in mechanically stabilized earth (MSE) walls. While feasibility and numerical studies have been conducted on pond ash, limited research has specifically addressed incorporating its strain-softening behavior into numerical models. Existing models tend to be overly complex, necessitating the development of a more practical approach. This study employs a simplified co-ordinate transformation softening (SCTS) model that simulates the strain-softening response using a co-ordinate transformation technique. The response of Parichha pond ash is examined through experimental investigations, and a simplified numerical model is utilized to analyze the behavior of an MSE wall filled with pond ash. The results are evaluated against those obtained using the Duncan Chang model. The SCTS model reduces maximum wall displacement by approximately 65% for relative densities of 80% and 90%, and by 46% for a relative density of 65%, compare to the conventional model. The reinforcement strains exhibited no significant variation, while the connection loads are slightly higher in the SCTS model.