ABSTRACT
In order to perform the current study, a two-dimensional Finite Element model was prepared to simulate the static and dynamic behavior of circular shield tunnels. The corresponding numerical model contains an 8-meter-diameter tunnel centered at 12 m depth of a sandy soil with medium density. To generate the model, after excavation of the corresponding tunnel and installation of the tunnel lining, the volume loss has been simulated by applying the contraction to the tunnel lining. This contraction was defined in the staged construction calculation in the magnitude of 2 percent. Figure 2 illustrates the Finite Element mesh and the position of the mentioned tunnel section.
