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<p>The large-scale application of a square-pattern tire-derived aggregate (TDA) arrangement surrounding the tunnel is considered in this study. Numerical analyses were conducted to evaluate the seismic response of two different sizes of TDA arrangements under Kobe seismic excitation. The hardening model was employed for the sand and TDA in the finite element analysis, while the elasto-plastic model was utilized for the tunnel. The proposed tunnel-sand interaction (TSI) model is validated with the results of previous study. The longitudinal displacement and volumetric strain at the surface are reduced at rates of 8.3% and 80.7%, respectively, for the larger-sized TDA arrangement. Similarly, it shows 15.4% and 31.3% decremental rates of the vertical displacement and shear strain at the ground. Therefore, the larger-sized TDA may be used in practice for reducing cost.</p>

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Numerical Evaluation of Seismic Response of Tire-Derived Aggregate Mixed Tunnel-Sand Interaction Model

  • 期刊论文

  • 发表日期：

    2025年11月3日

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  • Md. Foisal Haque,
  • Mahabub Sadiq,
  • Mehedi Ahmed Ansary,
  • Subinoy Biswas Nayan,
  • Saif Ahmed Santo,
  • Md. Assaduzzaman

摘要

The large-scale application of a square-pattern tire-derived aggregate (TDA) arrangement surrounding the tunnel is considered in this study. Numerical analyses were conducted to evaluate the seismic response of two different sizes of TDA arrangements under Kobe seismic excitation. The hardening model was employed for the sand and TDA in the finite element analysis, while the elasto-plastic model was utilized for the tunnel. The proposed tunnel-sand interaction (TSI) model is validated with the results of previous study. The longitudinal displacement and volumetric strain at the surface are reduced at rates of 8.3% and 80.7%, respectively, for the larger-sized TDA arrangement. Similarly, it shows 15.4% and 31.3% decremental rates of the vertical displacement and shear strain at the ground. Therefore, the larger-sized TDA may be used in practice for reducing cost.