Fig 1.
Overall framework of the proposed cable tunnel fire risk evaluation model.
Fig 2.
Hierarchical fire risk indicator system for cable tunnels.
Table 1.
Example of pairwise comparison matrix for criterion-level indicators.
Table 2.
Representative scoring criteria for major fire risk indicators.
Fig 3.
Fire risk indicator weights derived from AHP and their ranking.
Fig 4.
Sensitivity of the composite fire risk index to individual fire risk indicators.
Fig 5.
Ranking of tunnel segments based on composite fire risk index.
Fig 6.
Comparison of composite fire risk indices under different operational scenarios (S0-S4).
Fig 7.
Heatmap of fire risk indicator scores across tunnel segments.