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<p>This research proposes a novel technique for analyzing the circular tunnel surrounded by tire-derived aggregates (TDA) to easily evaluate the strain and deflection of the tunnel. For this purpose, the circular tunnel is treated as a 2-nodded simplified beam element to consider fixity at both ends. The linear elastic analysis is performed under gravity loading to obtain unconditional stable explicit solution. The proposed concept is validated with the previous three-dimensional numerical analysis. The difference in strains between two studies is found to be 3.53%, which indicate a good accuracy for verification. The deflection and strain of the beam (i.e. simplified form of tunnel) are increased by varying the relative tunnel covers due to the increment of self-weights of soil and TDA. Also, the responses (i.e. strain and deflection) are decreased by increasing the tunnel thickness because of increasing the stiffness of the beam. The maximum variation of responses (i.e. strain and deflection) to consider the impact of TDA on the tunnel is found to be 18.9%. So, the tunnel responses are decreased at a rate of 24.4% by using the TDA.<!--Query ID="Q1" Text="Please check and confirm that the authors and their respective affiliations have been correctly identified and amend if necessary." Resolved="yes"--></p>

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Numerical response evaluation of circular tunnel surrounded by tire-derived aggregates

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月1日

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  • Md. Foisal Haque,
  • Mehedi Ahmed Ansary

摘要

This research proposes a novel technique for analyzing the circular tunnel surrounded by tire-derived aggregates (TDA) to easily evaluate the strain and deflection of the tunnel. For this purpose, the circular tunnel is treated as a 2-nodded simplified beam element to consider fixity at both ends. The linear elastic analysis is performed under gravity loading to obtain unconditional stable explicit solution. The proposed concept is validated with the previous three-dimensional numerical analysis. The difference in strains between two studies is found to be 3.53%, which indicate a good accuracy for verification. The deflection and strain of the beam (i.e. simplified form of tunnel) are increased by varying the relative tunnel covers due to the increment of self-weights of soil and TDA. Also, the responses (i.e. strain and deflection) are decreased by increasing the tunnel thickness because of increasing the stiffness of the beam. The maximum variation of responses (i.e. strain and deflection) to consider the impact of TDA on the tunnel is found to be 18.9%. So, the tunnel responses are decreased at a rate of 24.4% by using the TDA.