Predicting the Intensity of the Vulnerability of the Building due to Tunneling-Induced Settlement by Studying the Geomechanical Behavior of the Surrounding Medium
This paper investigates the effect of geotechnical parameters on the prediction of building damage severity due to tunneling-induced settlement. The influence of soil elastic modulus, cohesion, and internal friction angle on ground displacement and building deformation was studied using the numerical finite element method in the Tehran Metro Line 7 tunnel project. The severity of the building damage was analyzed based on an assessment of building deformation parameters. The results indicate that building damage severity is significantly sensitive to changes in soil elastic modulus. Minor changes in elastic modulus can lead to a shift in damage severity from structural and severe (damage grades 4 and 5) to non-structural and minor (damage grades 0 and 1). In contrast, changes in internal friction angle do not have a significant impact on damage severity. However, an increase in cohesion can be somewhat effective in reducing damage severity.