Applicability study of a low cost seismic isolator prototype using recycled rubber
DOI:
https://doi.org/10.21754/tecnia.v29i2.706Keywords:
Base isolation, Vibration isolation, Recycled rubber, Bouc-Wen hysteresis model, Time history analysisAbstract
In order to protect buildings against earthquakes that are categorized as "common" according to the Peruvian Earthquake Resistant Standard, a prototype of Recycled Rubber Seismic Isolator ("RRSI") was developed in the structural laboratory of the Japan-Peru Center for Earthquake Engineering Research and Disaster Mitigation - CISMID, Peru. The raw material used to manufacture this device was recycled rubber tires; the rubber tire was cut into square shape sheets with 190mmx190mm of cross-section and a total thickness of around 11 mm. Rubber tire sheets were joined to each other by a vulcanization process, including rubber layers with 3mm of thickness made of recycled rubber tire powder in between rubber tire sheets; and in between the rubber tire sheet and the steel plate at both ends of the bearing.
Two specimens were tested in a shaking table under a free vibration impulse or displacement in order to get their natural vibration frequency, natural period, and inherent damping. Then, to obtain the hysteretical behavior, a cyclic lateral reversal-loading test was conducted on three different specimens applying a constant axial load of 330MPa, 270MPa, and 220MPa respectively and a lateral displacement pattern with different levels of shear deformations up to the failure, which occurs at a shear strain of around 100%.
From the experimental results, a nonlinear hysteretic behavior and energy dissipation were observed, decoupling the lateral movement. Finally, a numerical model was proposed to model the nonlinear hysteretic behavior of the RRSI based on a Modified Bouc-Wen model. This numerical model was simulated by using the specimens as base isolators for buildings.
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References
[1]Higashino M2006 Response Control and Seismic Isolation of Buildings. RoutledgeAvailable from: http://dx.doi.org/10.4324/9780203018866
[2]Ministerio de Vivienda, Construcción y Saneamiento. RM-355-2018-Vivienda Norma Técnica E.030 Diseño Sismorresistente.
[3]Kelly JM 1997Seismic Isolation for Earthquake-Resistant DesignEarthquake-Resistant Design with Rubber [Internet]. Springer London, pp 1–18. Available from: http://dx.doi.org/10.1007/978-1-4471-0971-6_1
[4]Kelly JM, Konstantinidis DA2011Mechanics of Rubber Bearings for Seismic and Vibration Isolation. John Wiley & Sons, LtdAvailable from: http://dx.doi.org/10.1002/9781119971870
[5]Turer A, Özden B 2007Seismic base isolation using low-cost Scrap Tire Pads (STP). Materials and Structures [Internet]. Springer Science and Business Media LLC; 13;41(5),pp 891–908. Available from: http://dx.doi.org/10.1617/s11527-007-9292-3
[6]Ikhouane F, Mañosa V, Rodellar J 2007Dynamic properties of the hysteretic Bouc-Wen model. Systems & Control Letters [Internet]. Elsevier BV, 56(3),pp 197–205. Available from: http://dx.doi.org/10.1016/j.sysconle.2006.09.001
[7]Saito T 2017STERA 3DTechnical Manual Version 5.8.Toyohoshi university of technology
[8]Chatzi EN, Smyth AW, Masri SF 2010Experimental application of on-line parametric identification for nonlinear hysteretic systems with model uncertainty. Structural Safety [Internet]. Elsevier BV; 32(5),pp 326–37. Available from: http://dx.doi.org/10.1016/j.strusafe.2010.03.008
[9]Sengupta P, Li B Modified Bouc–Wen model for hysteresis behavior of RC beam–column joints with limited transverse reinforcement2013Engineering Structures[Internet]. Elsevier BV; 46,pp 392–406. Available from: http://dx.doi.org/10.1016/j.engstruct.2012.08.003
[10]Zaman MA, Sikder U 2015Bouc–Wen hysteresis model identification using Modified Firefly Algorithm. Journal of Magnetism and Magnetic Materials[Internet]. Elsevier BV; 395, pp 229–233. Available from: http://dx.doi.org/10.1016/j.jmmm.2015.07.080
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