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Design approach of high damping rubber bearing for seismic isolation

  • Tiong, Patrick L.Y. (Research and Development Division, Base Isolation Technology (Asia) Sdn Bhd) ;
  • Kelly, James M. (Department of Civil and Environmental Engineering, University of California) ;
  • Or, Tan T. (Doshin Rubber Products (M) Sdn Bhd)
  • 투고 : 2016.10.06
  • 심사 : 2017.07.31
  • 발행 : 2017.09.25

초록

Structural control through seismic isolation using elastomeric rubber bearing, which is also known as High Damping Rubber Bearing (HDRB), has seen an increase in use to provide protective from earthquake, especially for new buildings in earthquake zones. Besides, HDRB has also been used in structural rehabilitation of older yet significant buildings, such as museums and palaces. However, the present design approach applied in normal practice has often resulted in dissimilar HDRB dimension requirement between structural designers and bearing manufacturers mainly due to ineffective communication. Therefore, in order to ease the design process, most HDRB manufacturers have come up with catalogs that list all necessary and relevant product lines specifically for structural engineers to choose from. In fact, these catalogs contain physical dimension, compression property, shear characteristic, and most importantly, the total rubber thickness. Nonetheless, other complicated issues, such as the relationship between target isolation period and displacement demand (which determines the total rubber thickness), are omitted due to cul-de-sac fixing of these values in the catalogs. As such, this paper presents a formula, which is derived and extended from the present design approach, in order to offer a simple guideline for engineers to estimate the required HDRB size. This improved design formula successfully minimizes the discrepancies stumbled upon among structural designers, builders, and rubber bearing manufacturers in terms of variation order issue at the designing stage because manufacturer of isolator is always the last to be appointed in most projects.

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참고문헌

  1. AASTHO (2010), LRFD Bridge Design Specifications. Washington DC: American Association of State Highway and Transportation Officials.
  2. Anderson, E.L., Mahin, S.A., Fenves, G.L. and Whittaker, A.S. (2000), "An evaluation of the AASTHO uniform load method for estimating forces and deformations in seismically isolated bridge systems", Proceedings of the 12th World Conference on Earthquake Engineering, Auckland, New Zealand, Paper No 2550.
  3. ASCE 7-10 (2010), Minimum Design Loadings for Buildings and Other Structures. US: American Society of Civil Engineers.
  4. Braga, F. and Laterza, M. (2004), "Field testing of low-rise base isolated building", Eng. Struct., 26(11), 1599-1610. https://doi.org/10.1016/j.engstruct.2004.06.002
  5. Chaudhary, M.T.A., Abe, M. and Fujino, Y. (2001), "Performance evaluation of base-isolated Yama-age Bridge with high damping rubber bearings using recorded seismic data", Eng. Struct., 23(8), 902-910. https://doi.org/10.1016/S0141-0296(00)00117-6
  6. Chauhan, K.M. and Shah, B.J. (2013), "Excel spreadsheet for design of lead rubber bearing used for seismic isolation of bridges", Int. J. Adv. Eng. Res. Studies, 2(3), 60-62.
  7. Chen, Z.Y., Zhao, H. and Lou, M.L. (2016), "Seismic performance and optimal design of framed underground structures with lead-rubber bearings", Struct. Eng. Mech., 58(2), 259-276. https://doi.org/10.12989/sem.2016.58.2.259
  8. CEN (2003). Eurocode 8: Design of Structures for Earthquake Resistance - Part 1: General Rules, Seismic Actions and Rules for Buildings. London, UK: British Standards Institution.
  9. CEN (2005), BS EN 1337-3-2005 Structural Bearings - Part 3: Elastomeric Bearings, British Standards Institution, London, U.K.
  10. CEN (2007), EN 15129: Anti Seismic Devices, British Standards Institution, London, U.K.
  11. Chung, W.J., Yun, C.B., Kim, N.S. and Sew, J.W. (1999), "Shaking table and pseudo-dynamic tests for the evaluation of the seismic performance of base-isolated structures", Eng. Struct., 21(4), 365-379. https://doi.org/10.1016/S0141-0296(97)00211-3
  12. Falborski, T. and Jankowski, R. (2012), "Shaking table experimental study on the base isolation system made of polymer bearings", Proceedings of the 15th World Conference on Earthquake Engineering, Lisbon, Portugal.
  13. Fan, J., Long, X. and Zhang, Y. (2015), "Optimum design of leadrubber bearing system with uncertainty parameters," Struct. Eng. Mech., 56(6), 959-982. https://doi.org/10.12989/sem.2015.56.6.959
  14. Islam, A.S., Jameel, M., Uddin, M.A. and Ahmad, S.I. (2011), "Simplified design guidelines for seismic base isolation in multi-storey buildings for Bangladesh National Building Code (BNBC)," Int. J. Phys. Sci., 6(23), 5467-5486.
  15. Kawashima, K. (1992), Manual for Menshin Design of Highway Bridges. Tokyo: Ministry of Construction.
  16. Kelly, J.M. and Konstantinidis, D. (2011), Mechanics of Rubber Bearings for Seismic and Vibration Isolation, New York: John Wiley & Sons.
  17. Kikuchi, M. and Aiken, I.D. (1997), "An analytical hysteresis model for elastomeric seismic isolation bearings", Earthq. Eng. Struct. D., 26(2), 215-231. https://doi.org/10.1002/(SICI)1096-9845(199702)26:2<215::AID-EQE640>3.0.CO;2-9
  18. Malek, K.A., Ahmadi, H.R., Muhr, A.H., Stephens, I.J., Gough, J., Picken, J.K., Lee, J.J., Zulkefli, M.U. and Taib, I.M. (2012), "Seismic protecting of 2nd Penang Crossing using high damping Natural rubber isolators," Proceedings of the 15th World Conference on Earthquake Engineering, Lisbon, Portugal.
  19. Mayes, R.L. and Naeim, F. (2001), "Design of structure with seismic isolation", (Ed., F. Naeim), The Seismic Design Handbook, Chapter 14, Boston: Kluwer Academic Pub.
  20. Moroni, M.O., Sarrazin, M., Brull, J. and Munoz, R. (2004), "Shaking table tests of a scaled base isolated shear wall building", Proceedings of the 8th US National Conference on Earthquake Engineering, California, United States of America, Paper No 728.
  21. Naeim, F. and Kelly, J.M. (1999), Design of Seismic Isolated Structures - From Theory to Practice. New York: John Wiley & Sons.
  22. Tiong, P.L.Y., Adnan, A., Rahman, A.B.A. and Mirasa, A.K. (2014), "Seismic base isolation of precast wall system using high damping rubber bearing", Earthq. Struct., 7(6), 1141-1169. https://doi.org/10.12989/eas.2014.7.6.1141
  23. Wu, Y.M. and Samali, B. (2002), "Shake table testing of a base isolated model", Eng. Struct., 24(9), 1203-1215. https://doi.org/10.1016/S0141-0296(02)00054-8