Vibrations of nonlinear, absorbing soil medium according to the seismic microzoning instrumental method

Abstract

Abstract In order to assess the nonlinear and absorbing properties of soils, the studies in typical areas of the Tbilisi territory were carried out using a powerful vibratory source SV-10/100. It was found that the nonlinearity indicators used in the previously obtained formulas for the increments of the intensity make it possible to evaluate the stress-strain state of soils (linear elasticity, nonlinear elasticity, inelasticity). The “pure” absorption, as the ratio of the normalized spectrum to the vibration frequency, is actually a loss factor. This will make it possible to widely use the easily calculated “pure” absorption index in solving many problems of engineering seismology and earthquake-resistant construction, as well as to increase the reliability of the data obtained. In particular, these indicators can be used in the energy calculation of buildings, structures, etc.