Modelling of ground vibration from tunnels in a poroelastic half-space using a 2.5-D FE-BE formulation

This paper presents an improved two-and-a-half-dimensional (2.5-D) finite element-boundary element (FE-BE) model to predict train-induced vibrations from a tunnel with an arbitrarily shaped cross-section embedded in a poroelastic half-space. The proposed model considers both the saturated porous characteristic of the soil and the free surface effect. A 2.5-D BE model based on the Green’s function for a poroelastic half-space is developed to …