Study on longitudinal seismic fragility and resilience of shield tunnels crossing soil–rock interfaces

Key Points

• Seismic fragility in shield tunnels crossing soil-rock interfaces was found to be significant, indicating unique vulnerabilities.
• The analysis revealed that different soil and rock conditions impact the seismic performance of the tunnels.
• Using advanced modeling, researchers assessed structural responses under varying seismic conditions, emphasizing resilience capabilities.
• These findings may enable better design strategies for shield tunnels, improving safety and performance during earthquakes.