Dynamic calculation of a plane “Earth Dam-Base” system under seismic impact

Design, construction, as well reliable and safe operation of earthen hydraulic structures (earth dams) in the Republic Uzbekistan, located a seismically hazardous zone, require constant improvement load calculation methods, required by building codes, including loads (static - gravity, hydrostatic) temporary dynamic (seismic). The current normative method does not take into account non-one-dimensional behavior piecewise heterogeneity soil characteristics structure foundation. It allow determining stress-strain state (SSS) an dam, which is especially important for seismic areas. A mathematical formulation problem dam flat elastic given. solved numerically finite element method. eigenfrequencies modes vibrations system “structure-foundation” are determined taking inhomogeneous foundation soil. Based on results these parameters, appropriate analysis performed. SSS “dam-foundation” was studied at calculated natural frequencies. result isocline equal displacements, normal shear stresses system.