Graphic Procedure for the Optimum Design of Elastomeric Isolators
Publication: Practice Periodical on Structural Design and Construction
Volume 26, Issue 1
Abstract
A simple graphic procedure for the optimum design of elastomeric seismic isolation devices is proposed. Starting from the design requirements concerning a base-isolated building, such as the device’s stiffness, maximum displacement, and vertical load, as well as the code checks on the device, the procedure allows defining the optimum values of the mechanical and geometrical parameters, such as rubber shear modulus, diameter, and thickness, and the number of rubber and steel layers. In more detail, the procedure allows for first identifying the ranges of the geometrical characteristics through a graphic representation of code checks in terms of the rubber’s diameter and volume, and then their specific values that allow one to obtain the optimum solution according to the design requirements for any fixed values of the mechanical characteristics of the materials. The graphic representation represents a suitable tool to better understand the role and influence of the different checks. The procedure can be easily automated by means of a computer code.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
References
CEN (European Committee for Standardization). 2003. Design of structures for earthquake resistance—Part 1: General rules, seismic actions and rules for buildings. Eurocode 8. Brussels, Belgium: CEN.
CEN (European Committee for Standardization). 2005. Structural bearings—Part 3: Elastomeric bearings. EN 1337-3. Brussels, Belgium: CEN.
CEN (European Committee for Standardization). 2016. Anti-seismic devices. EN 15129. Brussels, Belgium: CEN.
Clemente, P. 2017. “Seismic isolation: Past, present and the importance of SHM for the future.” J. Civ. Struct. Health Monit. 7 (2): 217–231. https://doi.org/10.1007/s13349-017-0219-6.
Clemente, P., G. Bongiovanni, G. Buffarini, and F. Saitta. 2016a. “Experimental analysis of base isolated buildings under low magnitude vibrations.” Int. J. Earthquake Impact Eng. 1 (1–2): 199–223. https://doi.org/10.1504/IJEIE.2016.10000961.
Clemente, P., G. Bongiovanni, G. Buffarini, F. Saitta, M. G. Castellano, and F. Scafati. 2019a. “Effectiveness of HDRB isolation systems under low energy earthquakes.” Soil Dyn. Earthquake Eng. 118 (Mar): 207–220. https://doi.org/10.1016/j.soildyn.2018.12.018.
Clemente, P., G. Bongiovanni, G. Buffarini, F. Saitta, and F. Scafati. 2019b. “Monitored seismic behavior of base isolated buildings in Italy.” In Seismic structural health monitoring, edited by M. Limongelli and M. Celebi, 115–137. Cham, Switzerland: Springer. https://doi.org/10.1007/978-3-030-13976-6_5.
Clemente, P., F. Bontempi, and A. Boccamazzo. 2016b. “Seismic isolation in masonry buildings: Technological and economic issues.” In Brick and block masonry: Trends, innovation and challenges, edited by C. Modena, F. da Porto, and M. R. Valluzzi, 2207–2215. London: Taylor & Francis Group.
Clemente, P., and G. Buffarini. 2010. “Base isolation: Design and optimization criteria.” Seismic Isolation Prot. Syst. 1 (1): 17–40. https://doi.org/10.2140/siaps.2010.1.17.
Clemente, P., and A. Martelli. 2019. “Seismically isolated buildings in Italy: State-of-the-art review and applications.” Soil Dyn. Earthquake Eng. 119 (Apr): 471–487. https://doi.org/10.1016/j.soildyn.2017.12.029.
ISO. 2016. Elastomeric seismic-protection isolators. Part 3: Applications for buildings. Specifications. ISO/CD 22762-3. Geneva: ISO.
Losanno, D., H. A. Hadad, and G. Serino. 2019. “Design charts for eurocode-based design of elastomeric seismic isolation systems.” Soil Dyn. Earthquake Eng. 119 (Apr): 488–498. https://doi.org/10.1016/j.soildyn.2017.12.017.
Martelli, A., P. Clemente, A. De Stefano, M. Forni, and A. Salvatori. 2014. “Recent development and application of seismic isolation and energy dissipation and conditions for their correct use.” In Vol. 34 of Geotechnical, geological and earthquake engineering, 449–488. Basel, Switzerland: Springer. https://doi.org/10.1007.978-3-319-07118-3.
Matsuda, K., K. Kasai, H. Yamagiwa, and D. Sato. 2012. “Responses of base-isolated buildings in Tokyo during the 2011 Great East Japan Earthquake.” In Vol. 34 of Proc., 15th World Conf. on Earthquake Engineering 15WCEE, 27416–27425. Red Hook, NY: Curran Associates.
MIT (Ministry of Infrastructure and Transport). 2018. Aggiornamento delle Norme Tecniche per le Costruzioni. Rome: MIT.
MIT (Ministry of Infrastructure and Transport). 2019. Istruzioni per l’applicazione dell’ ‘Aggiornamento delle Norme Tecniche per le Costruzioni’ di cui al decreto ministeriale 17 gennaio 2018. Rome: MIT.
Naeim, F., and J. M. Kelly. 1999. Design of seismic isolated structures: From theory to practice. Chichester, UK: Wiley.
Saitta, F., P. Clemente, G. Bongiovanni, G. Buffarini, A. Salvatori, and C. Grossi. 2018. “Base isolation of buildings with curved surface sliders: Basic design criteria and critical issues.” Adv. Civ. Eng. 2018: 1569683. https://doi.org/10.1155/2018/1569683.
Skinner, R. I., W. H. Robinson, and G. H. McVerry. 1993. An introduction to seismic isolation. Chichester, UK: Wiley.
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© 2020 American Society of Civil Engineers.
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Received: May 26, 2020
Accepted: Aug 25, 2020
Published online: Oct 24, 2020
Published in print: Feb 1, 2021
Discussion open until: Mar 24, 2021
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