Experimental and numerical investigation for the rupture problem of a tunnel subjected to strike-slip fault

Abstract

In this study, a model test and a DEM-FDM coupling numerical analysis were conducted to investigate the response and mechanism of a tunnel subjected to strike-slip fault rupture. The interaction of the tunnel with the fault rupture, the deformation pattern, and the strain evolution and crack propagation in the tunnel liner were observed in the test. With the experimental data, a DEM-FDM coupling model was constructed and calibrated. With this model, the response and mechanism of the tunnel subjected to strike-slip fault rupture were numerically investigated, to provide a deep insight into the design factors of the tunnel liner.