SEISMIC ANALYSIS OF UTILITY TUNNEL CONSIDERING WAVE PASSAGE EFFECT

The dynamic interaction between underground structure and soil has long been a hot topic in current researches. However, there is still limited available research on the seismic response of the utility tunnel. In this paper, the response of the utility tunnel under seismic loading is investigated by using finite element method (FEM), with a commercial FEM software package, ABAQUS. To investigate the seismic soil-structure interaction, a three dimensional nonlinear finite element model has been developed and the nonlinear plasticity is incorporated in the model so that the interaction performance of the soil-structure system can be evaluated more precisely. Finally, the wave passage effect is considered in the numerical simulation and computation results reveal that the internal forces are magnified by the wave passage effect.