Experimental Study on Fire Resistance of Building Seismic Rubber Bearings
Publication: Journal of Structural Engineering
Volume 137, Issue 12
Abstract
Eight building seismic rubber bearings (four uninsulated lead rubber bearings, one insulated lead rubber bearing, two uninsulated natural rubber bearings, and one insulated natural rubber bearing) were experimentally investigated in fire tests following the ISO834 standard heating process. The effects of vertical load and the duration of fire on the failure mode and residual mechanical properties of the rubber bearings were analyzed. The experimental results show that (1) the fire resistance of rubber bearings without insulation fails to exceed 1.5 h; (2) the duration of fire exposure has significant influence on the mechanical-properties degradation of rubber bearings; (3) the effect of vertical load, to which rubber bearings were subjected during the fire, on the residual mechanical properties and fire resistance is inevident; and (4) the proposed insulation is successful in preventing rubber bearings from significant degradation in mechanical properties in fires.
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Acknowledgments
The writers want to express their gratitude for the financial support of the National Natural Science Foundation of China (No. NNSFC51025829, NNSFC90815027), and the Key Research Project of the State Key Laboratory of Subtropical Building Science of China (No. UNSPECIFIED2008ZA10).
References
Amerongen, G. J. (1955). “Oxidative and nonoxidative thermal degradation of rubber.” Ind. Eng. Chem., 47(12), 2564–2574.
Buckle, I. G., Constantinou, M., Dicleli, M., and Ghasemi, H. (2006). “Seismic isolation of highway bridges.” Technical Rep. No. MCEER-06-SP07, Multidisciplinary Center for Earthquake Engineering Research, Buffalo, NY.
Constantinou, M. C., Whittaker, A. S., Kalpakidis, Y., Fenz, D. M., and Warn, G. P. (2007). “Performance of seismic isolation hardware under service and seismic loading.” Technical Rep. No. MCEER-07-0012, Multidisciplinary Center for Earthquake Engineering Research, Buffalo, NY.
Dashora, P. (1994). “A study of variation of thermal conductivity of elastomers with temperature.” Phys. Scr., 49(5), 611–614.
Derham, C. J., and Plunkett, A. P. (1976). “Fire resistance of steel-laminated natural rubber bearings.” NR Tech., 7(2), 29–37.
European Committee for Standardization (CEN). (2004). “Design of concrete structures—part 1–2: General—structural fire design.” EN1992-1-1 Eurocode 2, Brussels.
European Committee for Standardization (CEN). (2005). “Design of steel structures—part 1–2: General—structural fire design.” EN1993-1-1 Eurocode 3, Brussels.
ISO. (1999). “Fire resistance tests: Elements of building construction.” ISO 834, Geneva.
Kalpakidis, I. V., and Constantinou, M. C. (2008). “Effects of heating and load history on the behavior of lead-rubber bearings.” Technical Rep. No. MCEER-08-0027, Multidisciplinary Center for Earthquake Engineering Research, Buffalo, NY.
Kalpakidis, I. V., and Constantinou, M. C. (2009a). “Effects of heating on the behavior of lead-rubber bearings. I: Theory.” J. Struct. Eng., 135(12), 1440–1449.
Kalpakidis, I. V., and Constantinou, M. C. (2009b). “Effects of heating on the behavior of lead-rubber bearings. II: Verification of theory.” J. Struct. Eng., 135(12), 1450–1461.
Kato, A., Oba, M., Michikoshi, S., and Minami, T. (1999). “Study on structural design for seismic isolated FBR: Part 28. Fire test results of rubber bearings.” Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, structural dynamics nuclear power plants, Architectural Institute of Japan, Tokyo, 1215–1216 (in Japanese).
Koyama, M., Hasegawa, O., and Yokoyama, R. (1998). “Fire resistance test of fire-protected laminated rubber bearings.” Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, structural dynamics nuclear power plants, Architectural Institute of Japan, Tokyo, 573–574 (in Japanese).
Liu, W. G., Zhou, F. L., Sun, F., Huo, D., and Yan, W. M. (2001). “Product specification and mechanical properties of Chinese rubber bearings.” Trans., 16th Int. Conf. on Structural Mechanics in Reactor Technology, International Association for Structural Mechanics in Reactor Technology, Raleigh, NC.
Ministry of Construction of People’s Republic of China (MCPRC). (2000). “Rubber isolation bearings for buildings.” JG118-2000, Beijing (in Chinese).
Miyazaki, M., Arima, F., Mitsusaka, Y., Ikennaga, M., and Hosono, Y. (1988). “Study on fire resistance of steel-laminated rubber bearings: (part 1) Performance tests of a fire-protected lead rubber bearing.” Summaries of technical papers of Annual Meeting Architectural Institute of Japan. B, Structures I, Architectural Institute of Japan, Tokyo, 389–390 (in Japanese).
Skinner, R. I., Robinson, W. H., and McVerry, G. H. (1993). An introduction to seismic isolation, Wiley, New York.
Standardization Administration of People’s Republic of China (SAPRC). (2007). “Rubber bearings—Part 1: Seismic-protection isolators test methods.” GB/T20688.1-2007, Beijing (in Chinese).
Waller, R. A. (1969). Buildings on springs, Pergamon, London.
Williams, B., Bisby, L., Kodur, V., Green, M., and Chowdhury, E. (2006). “Fire insulation schemes for FRP-strengthened concrete slabs.” Composites, Part A, 37(8), 1151–1160.
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Information
Published In
Journal of Structural Engineering
Volume 137 • Issue 12 • December 2011
Pages: 1593 - 1602
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Aug 1, 2010
Accepted: Jan 20, 2011
Published online: Jan 22, 2011
Published in print: Dec 1, 2011
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