Kuznetsov S.V.

Doctor of Physical and Mathematical Sciences (Advanced Doctor), Professor, Institute for Problems in Mechanics, Russian Academy of Sciences, Russia,

MODIFIED CAM-CLAY MODELS FOR DYNAMIC ANALYSIS OF GRANULAR METAMATERIALS IN EARTHQUAKE ENGINEERING

https://doi.org/10.34031/2618-7183-2021-4-3-54-60
Abstract
the problem of protecting buildings and structures from vibrations of natural and artificial nature is important for modern construction. One of such modern methods of protection is seismic pads. The purpose of this work was to study the effect of adding a layer of granular metamaterial under a slab foundation on the vibration of a building under the influence of seismic shear waves (S-waves). To achieve this objective, the finite element method (FEM) was used in combination with Cam-Clay models. The FE model consists of a ten-story superstructure rested on the slab foundation, under which there is a layer of granular metamaterials. 16 models were created taking into account changes in the values of these parameters (pad thickness; density; cohesion; critical state strength parameter (M); Young's modulus-Poisson's ratio). The dynamic analysis performed using the software package Abaqus/CAE showed the effectiveness of granular metamaterials in their ability to dissipate seismic energy and significantly reduce vibration transmitted from the ground to the building.
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