DETERMINATION OF ELASTIC STRESSES IN THE DAM KOYNA BASE USING THE WAVE THEORY OF SEISMIC SAFETY
Covers some aspects of numerical simulation of the seismic safety of concrete dams Koyna ground base at wave impacts. The Foundation is modeled as a half-plane. To solve this problem is applied wave theory of seismic safety. The seismic excitation is modeled as a function of Heaviside. Using the finite element method in displacements, a linear problem with initial and boundary conditions has led to the linear Cauchy problem. Received explicit two-layer finite-element scheme. The maximum tensile stress occurs in the upper part of the posterior contour of the dam. Elastic loop voltage on the faces of the dam is almost a mirror reflection of one another, that is antisymmetric. Performed the analysis of the dynamic stress state showed the nature of the destruction observed in the dam Koyna after the earthquake.