ИССЛЕДОВАНИЕ СЕЙСМОСТОЙКОСТИ ГРУНТОВЫХ ПЛОТИН ОТ ДЕЙСТВИЯ МНОГОКРАТНЫХ СЕЙСМИЧЕСКИХ ВОЗДЕЙСТВИЙ, СООРУЖЕННЫХ В ГОРНО- СКЛАДЧАТЫХ РЕГИОНАХ

The problem of seismic stability of homogeneous earth dams constructed in complex geohydrodynamic regions has been solved. The calculations are performed using from the finite element method. Given the great extent at the base of such dams, the general equation of their motion is solved taking into account the well-known “traveling wave” method. It is shown that the offset of the existing viscous-plastic properties of earth dams already under the influence of a one-time strong seismic impact in them residual deformations arise, which subsequently develops even with weak earthquakes. This circumstance must be taken into account when designing such dams.