Three-dimensional numerical simulation of utility tunnel for large-scale shaking table test

Free-Field responses of soil in a large-scale shaking table test is simulated by a three-dimensional numerical model using FEM software ABAQUS as a platform The Drucker-Prager model is adopted for the soil modeling and the shell elements are used for the box with a mass representing the effect of inertia force caused by the frame of laminar shear box. The feasibility and efficiency of the proposed FEM model is validated by comparing the predicted responses with experimental measurements in terms of time history and soil acceleration amplification factors. The results demonstrate that the proposed analytical model can predict deformational characteristics, within acceptable accuracy, of the test soil, and the response of the utility tunnel was also calculated and compared with the test results. The results agree well.