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<p>The seismic vulnerability of underground infrastructure, particularly tunnels, is a critical concern due to the potentially severe impacts of earthquake-induced damage on essential transportation networks. In seismically active regions such as Algeria, systematic evaluation of tunnel vulnerability is essential to ensure structural safety and operational resilience. This study presents a structured vulnerability assessment framework based on the Analytic Hierarchy Process (AHP), integrating geotechnical, structural, and seismic parameters within a hierarchical decision-making model. The approach introduces a tailored classification index for tunnels in Algeria, combining empirical data, expert judgment, and AHP-derived weightings to categorize tunnels into risk levels. Results indicate that geotechnical parameters—particularly ground conditions and landslide susceptibility—exert a dominant influence, while structural and seismic parameters provide complementary insights for risk stratification. Validation against observed tunnel damage from the 2008 Wenchuan earthquake confirms the methodology’s accuracy. The proposed framework offers a robust tool to inform seismic design standards, tunnel retrofitting strategies, and risk-informed infrastructure policy decisions.</p>

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Comprehensive Seismic Vulnerability Assessment of Tunnels: Application of the Analytic Hierarchy Process (AHP) in Algeria

  • 期刊论文

  • 发表日期：

    2025年11月12日

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  • Ghribi Zakaria,
  • Bensaibi Mahmoud

摘要

The seismic vulnerability of underground infrastructure, particularly tunnels, is a critical concern due to the potentially severe impacts of earthquake-induced damage on essential transportation networks. In seismically active regions such as Algeria, systematic evaluation of tunnel vulnerability is essential to ensure structural safety and operational resilience. This study presents a structured vulnerability assessment framework based on the Analytic Hierarchy Process (AHP), integrating geotechnical, structural, and seismic parameters within a hierarchical decision-making model. The approach introduces a tailored classification index for tunnels in Algeria, combining empirical data, expert judgment, and AHP-derived weightings to categorize tunnels into risk levels. Results indicate that geotechnical parameters—particularly ground conditions and landslide susceptibility—exert a dominant influence, while structural and seismic parameters provide complementary insights for risk stratification. Validation against observed tunnel damage from the 2008 Wenchuan earthquake confirms the methodology’s accuracy. The proposed framework offers a robust tool to inform seismic design standards, tunnel retrofitting strategies, and risk-informed infrastructure policy decisions.