Dynamic Nonlinear Analysis of an Hybrid Base Isolation System with Viscous Dampers and Friction Sliders in Parallel


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In the present work we have analyzed a particular base isolation system for the seismic protection of a multi-storey reinforced concrete (RC) building. The viscous dampers and friction sliders are the devices adopted in parallel for realizing the base isolation system. The base isolation structure has been designed and verified according to European seismic code EC8 and by considering for the friction sliders the influence of the sliding velocity on the value of the friction coefficient. A dynamic nonlinear analysis for a three-dimensional base isolated structure has been performed. Recorded accelerograms for bi-directional ground motions have been used which comply with the requirements imposed by EC8 for the representation of a seismic action in a time history analysis. In this paper a comparative analysis is presented between the base isolated structure with the described hybrid base isolation system and the traditional fixed base structure.



Edited by:

Ford Lumban Gaol




D. Cancellara and F. de Angelis, "Dynamic Nonlinear Analysis of an Hybrid Base Isolation System with Viscous Dampers and Friction Sliders in Parallel", Applied Mechanics and Materials, Vol. 234, pp. 96-101, 2012

Online since:

November 2012




[1] F. Naeim and J. M. Kelly, Design of Seismic Isolated Structures, John Wiley, New York, (1999).

[2] K. L. Ryan and A .K. Chopra, Estimation of seismic demands on isolators based on nonlinear analysis, J. Struct. Eng., ASCE, 130, pp.392-402, (2004).

[3] S. Sorace, G. Terenzi, Non-linear dynamic modelling and design procedure of FV spring-dampers for base isolation, Engineering Structures, Elsevier Science Ltd, Oxford, Vol. 23, N. 12, pp.1556-1567, (2001).

DOI: https://doi.org/10.1016/s0141-0296(01)00063-3

[4] S. Sorace, G. Terenzi, Analysis and demonstrative application of a base isolation/supplemental damping technology, Earthquake Spectra, EERI, Oakland, Vol. 24, N. 3, pp.775-793, (2008).

DOI: https://doi.org/10.1193/1.2946441

[5] S. Sorace, G. Terenzi, G. Magonette, F.J. Molina, Experimental investigation on a base isolation system incorporating steel-Teflon sliders and pressurized fluid viscous spring-dampers, Earthquake Engineering & Structural Dynamics, Wiley & Sons, Ltd, New York, Vol. 37, N. 2, pp.225-242, (2008).

DOI: https://doi.org/10.1002/eqe.753

[6] A.S. Mokha, M.C. Constantinou and A.M. Reinhorn, Teflon bearing in base isolation. I: testing, J. Struct. Engrg. ASCE 116, (1990).

DOI: https://doi.org/10.1061/(asce)0733-9445(1990)116:2(438)

[7] E.L. Wilson, Three-Dimensional Static and Dynamic Analysis of Structures, A Physical Approach With Emphasis on Earthquake Engineering, Computers and Structures, Inc., (2003).

[8] EC8, Eurocode 8: Design of Structures for Earthquake Resistance - Part 1: General rules, seismic actions and rules for buildings, PrEN1998-1, European Committee for Standardization, TC250/SC8, (2003).

DOI: https://doi.org/10.3403/03244372

[9] ESD, EuropeanStrong-motion Database, http: /www. isesd. cv. ic. ac. uk/ESD/frameset. htm.

[10] Cancellara, D., De Angelis, F., Pasquino, V., Displacement based approach for the seismic retrofitting of a RC existing building designed for only gravitational loads, Applied Mechanics and Materials, Vol. 166-169, pp.1718-1729, (2012).

DOI: https://doi.org/10.4028/www.scientific.net/amm.166-169.1718

[11] B. Gutenberg, S.F. Richter, Seismicity of the Earth and Associated Phenomena, 2nd Edition, Princeton University Press, pp.17-19, (1954).

[12] De Angelis, F., An internal variable variational formulation of viscoplasticity, Computer Methods in Applied Mechanics and Engineering, Vol. 190, n. 1-2, pp.35-54, (2000).

DOI: https://doi.org/10.1016/s0045-7825(99)00306-0

[13] De Angelis, F., A variationally consistent formulation of nonlocal plasticity, Int. Journal for Multiscale Computational Engineering, Vol. 5, n. 2, pp.105-116, (2007).

DOI: https://doi.org/10.1615/intjmultcompeng.v5.i2.40

[14] De Angelis, F., Multifield potentials and derivation of extremum principles in rate plasticity, Materials Science Forum, Vol. 539-543, pp.2625-2630, (2007).

DOI: https://doi.org/10.4028/www.scientific.net/msf.539-543.2625

[15] De Angelis, F., Evolutive laws and constitutive relations in nonlocal viscoplasticity, Applied Mechanics and Materials, Vol. 152-154, pp.990-996, (2012).

DOI: https://doi.org/10.4028/www.scientific.net/amm.152-154.990

[16] De Angelis, F., A comparative analysis of linear and nonlinear kinematic hardening rules in computational elastoplasticity, Technische Mechanik, Vol. 32, n. 2-5, pp.164-173, (2012).

[17] Alfano, G., De Angelis, F., Rosati, L., General solution procedures in elasto/viscoplasticity, Computer Methods in Applied Mechanics and Engineering, Vol. 190, pp.5123-5147, (2001).

DOI: https://doi.org/10.1016/s0045-7825(00)00370-4

[18] De Angelis, F., Cancellara, D., Modano, M., Pasquino, M., The consequence of different loading rates in elasto/viscoplasticity, Procedia Engineering, Vol. 10, pp.2911-2916, (2011).

DOI: https://doi.org/10.1016/j.proeng.2011.04.483

[19] De Angelis, F., Cancellara, D., Implications due to different loading programs in inelastic materials, Advanced Material Research, Vol. 422, pp.726-733, (2012).

DOI: https://doi.org/10.4028/www.scientific.net/amr.422.726

[20] De Angelis, F., Cancellara, D., Results of distinct modes of loading procedures in the nonlinear inelastic behavior of solids, Advanced Material Research, Vol. 482-484, pp.1004-1011, (2012).

DOI: https://doi.org/10.4028/www.scientific.net/amr.482-484.1004