English
Русский 54-60 p.
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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2. Dudchenko A.V. Analysis and optimization of parameters of vertical seismic barriers taking into account energy dissipation: dis. ... Cand. tech. sciences. Moscow, 2019. (rus.)
3. Kuznetsov S, Maigre H. Granular metamaterials for seismic protection. Hyperelastic and hypoelastic models. Journal of Physics: Conference Series 2019. 1425 (1). P. 012184.
4. Roscoe K.H, Schofield A., Wroth A.P. On the yielding of soils. Geotechnique. 1958. 8 (1). P. 22 – 53.
5. Roscoe K.H. Mechanical behaviour of an idealized'wet'clay. InProc. 3rd Eur. Conf. Soil Mech. Wiesbaden, 1963. 1. P. 47 – 54.
6. Roscoe K., Burland J.B. On the generalized stress-strain behaviour of wet clay. Proceedings of Engineering Plasticity. 1968. P. 535 – 609.
7. Kuznetsov S.V. Cam-clay models in mechanics of granular materials. Mechanics and Mechanical En-gineering. 2017. 21 (4). P. 813 – 821.
8. Jones R.M. Deformation theory of plasticity. Bull Ridge Corporation. 2009.
9. Li S., Brun M. et al. Numerical modelling of wave barrier in 2D unbounded medium using Explic-it/Implicit multi-time step co-simulation. IOP Conference Series: Materials Science and Engineering. 2018. 365. P. 042062.
10. Kravtsov A.V., Kuznetsov S.V., Sekerzh-Zen’kovich S.Y. Finite element models in Lamb’s problem. Mech. Solids. 2011. 46 (6). P. 952 – 959.
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13. Jain A.K. Performance Based Seismic Design Of Tall Buildings: Risks And Responsibilities. https://cecr.in/CurrentIssue/pages/20147
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Kuznetsov S.V., Al Shemali A.A. Modified Cam-Clay models for dynamic analysis of granular metamaterials in earthquake engineering. Construction Materials and Products. 2021. 4 (2). P. 54 – 60. https://doi.org/10.34031/2618-7183-2021-4-3-54-60