S. Mousavi - Faculty of Civil, Water and Environmental Engineering Shahid Beheshti University, Iran
A. Noorzad - Faculty of Civil, Water and Environmental Engineering Shahid Beheshti University, Iran
B. Ebrahimian - Faculty of Civil, Water and Environmental Engineering Shahid Beheshti University, Iran
S. Foti - Department of Structural, Geotechnical and Building Engineering, Politecnico di Torino, Italy

In an era where underground transportation infrastructure is increasingly vital, the construction of tunnels across fault lines has become a necessary challenge. This study addresses the critical issue of assessing the impact of fault ruptures on shallow tunnels, with a particular emphasis on the variability of soil parameters. We employ the Stochastic Finite Element Method (SFEM), providing a robust framework for simulating the unpredictable nature of soil properties in shallow tunnels under the impacts of surface fault rupture hazards. Our approach highlights the significant influence of soil parameter variations in the analysis of tunnel vulnerability during fault ruptures. The findings offer valuable insights for the design and safety assessment of tunnels in seismically active regions, contributing to the advancement of geotechnical engineering practices in the context of fault rupture hazards. Specifically, the maximum stress values demonstrated substantial increases of ۷۷ and ۱۰۰% when compared to the ۰.۵-meter case for the ۱.۰-meter and ۲.۰-meter scenarios, respectively.

Surface Fault Rupture, stochastic finite element method, soil uncertainties, shallow tunnels