FEATURES OF SEISMIC IMPACTS ON THE SOFT SOILS AND THEIR CONSIDERATION IN BUILDING CODES

Abstract

The influence of soil conditions on the intensity of seismic impacts is well known and is taken into account in the codes of all countries. As a rule, loads on structures from seismic impacts are determined by accelerations, and appropriate coefficients are introduced to take into account the influence of the soil conditions. The same coefficients are used to calculate displacements, which gives satisfactory results in dense soils. However, on soft soils large displacements can occur which are not regulations in the Earthquake Engineering codes. In this paper in order to estimate the true values of displacements on soft soils, the main parameters of registered strong earthquakes were used with their further processing, using the known dependencies for estimating seismic energy flux density, accelerations and displacements. For the analysis, we used mainly data from the earthquakes in Turkey in 2023.