The Method of Computer Simulation of Seismic Vibrations Buried Structures, Taking into Account the Interaction with the Soil Base

An effective method for numerical simulation of seismic vibrations of buried structures is presented, taking into account the nonlinear interaction with the ground base. The novelty of the proposed approaches lies in the application of the superimposed grid method to separate incident, transmitted and reflected waves in the ground base at the boundary of the calculated subdomain in contact with the structure, as well as the use of quasi-uniform grids with linear viscosity to dampen radiated waves, reduce the dimension of a discrete finite element problem and reduce computational costs. An assessment of the applicability of a two-dimensional planar formulation to solve the three-dimensional problem of earthquake resistance of structures is made.