English
Русский 5-11 p.
Problem of developing methods for protecting buildings and structures from the vibrations transmitted to them from the soil under the action of seismic effects is extremely important to date. One of these modern methods is seismic pads. The purpose of this work was to study the effectiveness of adding a pad of granular metamaterials under the foundation of the building to decrease influence of seismic shear waves. The Finite Element Analysis of Mohr-Coulomb models was used to achieve this goal. The FE model consists of a ten-story superstructure rested on the slab foundation, under which there is a layer of granular metamaterials. The values of five variables that affect the mechanical properties of these metamaterials were analyzed (density – cohesion – internal friction angle – Young's modulus – Poisson's ratio) for two different pad thicknesses. The dynamic analysis performed using the software package Abaqus/CAE showed the effectiveness of the granular metamaterials in their ability to significantly reduce magnitudes of displacements, velocities and accelerations in the building compared to the same values in the absence of these metamaterials. The analysis also revealed that among the studied variables, the cohesion is the parameter most influencing the effectiveness of metamaterials in their ability to dissipate seismic waves, while no significant effect was observed for the other parameters.
1. Datta T.K. Seismic analysis of structures. John Wiley & Sons. 2010. P. 369.
2. Vershinin V., Javkhlan S., Saidmukaram S. Seismic pads to protect buildings and structures from bulk seismic waves. E3S Web of Conferences. 2019. 97. P. 04047. EDP Sciences.
3. Dudchenko A.V. Analysis and optimization of the parameters of vertical seismic barriers when taking into account energy dissipation: dis. ... Candidate of Engineering Sciences. Moscow, 2019. (rus.)
4. Goldstein R.V. et al. The modified Cam-Clay (MCC) model: cyclic kinematic deviatoric loading. Arch Appl Mech. 2016. 86. P. 2021 – 2031.
5. Musaev V.K. Solution of the problem of diffraction and propagation of elastic waves by the finite element method. 1990. 4. P. 74 – 78. (rus.)
6. Jones R.M. Deformation theory of plasticity. Bull Ridge Corporation. 2009.
7. Li S. et al. Hybrid asynchronous absorbing layers based on Kosloff damping for seismic wave propagation in unbounded domains. Computers and Geotechnics. 2019. 109. P. 69 – 81.
8. Kuznetsov S.V., Terentjeva E.O. Planar internal Lamb problem. Waves in the epicentral zone of a vertical power source. Acoust. Phys. 2015. 61. P. 356 – 367.
9. Orekhov V.V., Negakhdar Kh. Some aspects of studying the use of trench barriers to reduce the energy of surface waves in the ground. Bulletin of MSCU. 2013. 3. P. 98 – 104. (rus.)
10. Kuznetsov S.V., Nafasov A.E. Horizontal seismic barriers for protection from seismic waves. 2010. 4. P. 131 – 134. (rus.)
11. Kuznetsov S.V. Seismic waves and seismic barriers. Acoustical Physics. 2011. 57 (3).P. 420 – 426.
12. Al Shemali A. Diffraction of harmonic S-waves into frame buildings. In: Proceedings of the International Conference Industrial and Civil Construction 2021. P. 85 – 92. Springer International Publishing.
13. Jain A.K. Performance Based Seismic Design Of Tall Buildings: Risks And Responsibilities. https://cecr.in/CurrentIssue/pages/20147
2. Vershinin V., Javkhlan S., Saidmukaram S. Seismic pads to protect buildings and structures from bulk seismic waves. E3S Web of Conferences. 2019. 97. P. 04047. EDP Sciences.
3. Dudchenko A.V. Analysis and optimization of the parameters of vertical seismic barriers when taking into account energy dissipation: dis. ... Candidate of Engineering Sciences. Moscow, 2019. (rus.)
4. Goldstein R.V. et al. The modified Cam-Clay (MCC) model: cyclic kinematic deviatoric loading. Arch Appl Mech. 2016. 86. P. 2021 – 2031.
5. Musaev V.K. Solution of the problem of diffraction and propagation of elastic waves by the finite element method. 1990. 4. P. 74 – 78. (rus.)
6. Jones R.M. Deformation theory of plasticity. Bull Ridge Corporation. 2009.
7. Li S. et al. Hybrid asynchronous absorbing layers based on Kosloff damping for seismic wave propagation in unbounded domains. Computers and Geotechnics. 2019. 109. P. 69 – 81.
8. Kuznetsov S.V., Terentjeva E.O. Planar internal Lamb problem. Waves in the epicentral zone of a vertical power source. Acoust. Phys. 2015. 61. P. 356 – 367.
9. Orekhov V.V., Negakhdar Kh. Some aspects of studying the use of trench barriers to reduce the energy of surface waves in the ground. Bulletin of MSCU. 2013. 3. P. 98 – 104. (rus.)
10. Kuznetsov S.V., Nafasov A.E. Horizontal seismic barriers for protection from seismic waves. 2010. 4. P. 131 – 134. (rus.)
11. Kuznetsov S.V. Seismic waves and seismic barriers. Acoustical Physics. 2011. 57 (3).P. 420 – 426.
12. Al Shemali A. Diffraction of harmonic S-waves into frame buildings. In: Proceedings of the International Conference Industrial and Civil Construction 2021. P. 85 – 92. Springer International Publishing.
13. Jain A.K. Performance Based Seismic Design Of Tall Buildings: Risks And Responsibilities. https://cecr.in/CurrentIssue/pages/20147
Al Shemali A.A. Drucker-prager models for dynamic analysis of granular metamaterials in earthquake engineering. Construction Materials and Products. 2021. 4 (2). P. 5 – 11. https://doi.org/10.34031/2618-7183-2021-4-2-5-11