GEOPHYSICAL BASIS OF ENGINEERING EARTHQUAKE PROTECTION OF RESPONSIBLE CONSTRUCTION OBJECTS

Abstract

To create a shielding system with a purpose of impact level reduction at strong earthquakes, it is necessary to know the type and physical condition of the ground layer. Velocities of stress and shear waves in one or another form of the soil being in a certain state are such indicators.The histograms of velocity values were composed on the basis of wide analysis of factual material, as in various types of soils so in soils of one type, with different physical and mechanical properties.The availability of a lot of factual material made it possible to obtain correlations between density and propagation velocity of shear waves. The availability of such data that allows to predict the probability values of shear wave velocities and hence the corresponding densities of the soil, can improve the validity and accountability of their values, as when working on shielding of buildings and constructions so for assessment of seismic hazard soils.