Multiaxial Behaviors of Laminated Rubber Bearings and Their Modeling. I: Experimental Study
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Volume 130, Issue 8
Abstract
Cyclic behaviors of three types of laminated rubber bearings under multiaxial loading state are studied. First, the characteristics of the restoring forces of these bearings in small amplitude are investigated. The experimental results show that the equivalent stiffness of high damping rubber bearings is increased and the damping ratio is decreased as the increase of the amplitude. In addition, the restoring force of a lead rubber bearing is found to highly depend on the vertical load. Second, a triaxial loading experiment, in which two-directional displacement paths are given to the bearings under a constant vertical load, is conducted. The experimental results indicate that horizontal restoring forces possess the coupling effects. The equivalent stiffness and damping ratio of high damping rubber bearings and natural rubber bearings are increased due to this coupling effect in comparison with the biaxial loading case, while the lead rubber bearing shows a slight decrease in them. Hence it is understood that the effects of the triaxial loading are not negligible and these have to be considered in a rational and reliable design.
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References
Aiken, I. D., Kelly, J. M., Clark, W. P., Tamura, K., Kikuchi, M., and Itoh, T. (1992). “Experimental studies of the mechanical characteristics of three types of seismic isolation bearings.” Proc., 3rd World Conf. on Earthquake Engineering, Madrid, Spain.
American Association of State Highway and Transportation Officials (AASHTO). (1999). Guide specifications for seismic isolation design, Washington, D.C.
Chopra, A. K. (1995). Dynamics of the structures: Theory and applications to earthquake engineering, Prentice-Hall, Englewood Cliffs, N.J.
Constantinou, M. C., Mokha, A., and Reinhorn, A.(1990). “Teflon bearings in base isolation. II: Modeling.” J. Struct. Eng., 116(2), 455–474.
Fujita, T., Fujita, S., Tazaki, S., Yoshizawa, T., and Suzuki, S.(1989a). “Research, development and implementation of rubber bearings for seismic isolation.” JSME Int. J., Ser. III, 33(3), 394–403.
Fujita, T., Suzuki, S., and Fujita, S. (1989b). “Hysteretic restoring force characteristics of high damping rubber bearings for seismic isolation.” ASME PVP Conf.-JSME Cosponsorship, PVP-181, 35–41.
Fukada, S., Kajikawa, Y., Hayashi, H., Yoshikawa, M., and Sanuki, Y. (1998). “Vibration characteristics of highway bridge with isolators and jointless system under moving vehicles.” Proc., 5th Int. Conf. on Short and Medium Span Bridges, Calgary, Alta., Canada, 1007–1017.
Huang, W. H., Fenves, G. L., Whittaker, A. S., and Mahin, S. A. (2000). “Characterization of seismic isolation bearings for bridges from bi-directional experimenting.” Proc., 12th World Conf. on Earthquake Engineering, No. 2047, Auckland, New Zealand.
Hwang, J. S., and Ku, S. W.(1997). “Analytical modeling of high damping rubber bearing.” J. Struct. Eng., 123(8), 1029–1036.
Hwang, J. S., Wu, J. D., Pan, T.-C., and Yang, G.(2002). “A mathematical hysteretic model for elastomeric isolation bearings.” Earthquake Eng. Struct. Dyn., 31, 771–789.
Japan Road Association (JRA). (1991). Handbook of bearings for highway bridges, Maruzen, Tokyo (in Japanese).
Japan Road Association (JRA). (1998). Design Specification for Highway Bridges Part V: Seismic design, Maruzen, Tokyo.
Japan Society of Seismic Isolation (JSSI). (1995). Introduction of base isolation system, Ohmu-sha, Tokyo (in Japanese).
Japan Standards Association (JSA). (2001). JIS handbook 28: Rubber materials.
Kikuchi, M., and Aiken, I. D.(1997). “An analytical hysteresis model for elastomeric seismic isolation bearings.” Earthquake Eng. Struct. Dyn., 26, 215–231.
Mazuda, T., Shiojiri, H., Oka, Y., Fujita, T., and Seki, M. (1989). “Experiment on large-scale seismic isolation elements.” Trans. of the 10th SMiRT-K, 691–696.
Mokha, A., Constantinou, C., and Reinhorn, A.(1990). “Teflon bearings in base isolation. I: Testing.” J. Struct. Eng., 116(2), 438–454.
Mokha, A., Constantinou, M. C., and Reinhorn, A. M.(1991). “Further results on frictional properties of Teflon bearings.” J. Struct. Eng., 117(2), 622–626.
Mokha, A., Constantinou, M. C., and Reinhorn, A. M.(1993). “Verification of friction model of Teflon bearings under triaxial load.” J. Struct. Eng., 119(1), 240–261.
Mori, A., Moss, P. J., Cooke, M., and Carr, A. J.(1999). “The behavior of bearings used for seismic isolation under shear and axial load.” Earth-quake Spectra, 15(2), 199–224.
Naeim, F., and Kelly, J. M. (1999). Design of seismic isolated structures, Wiley, New York.
Nagarajaiah, S., Reinhorn, A. M., and Constantinou, M. C.(1991). “Nonlinear dynamic analysis of 3-D-base-isolated structures.” J. Struct. Eng., 117(7), 2035–2054.
Otori, H. (1994). “Dynamic characteristics of lead rubber bearing with dynamic two-dimensional test equipment.” ASME PVP, Conf., Vol. 275-2.
Park, Y. J., Wen, Y. K., and Ang, A. H.-S.(1986). “Random vibration of hysteretic systems under bi-directional ground motions.” Earthquake Eng. Struct. Dyn., 14, 543–557.
Robinson, W. H.(1982). “Lead-rubber hysteretic bearings suitable for protecting structures during earthquakes.” Earthquake Eng. Struct. Dyn., 10, 593–604.
Sano, T., and Pasquale, G. D.(1995). “A constitutive model for high damping rubber bearings.” J. Pressure Vessel Technol., 117, 53–58.
Skinner, R. I., Robinson, W. H., and McVerry, G. H. (1993). An introduction to seismic isolation, Wiley, New York.
Yasaka, A. (1995). “Dynamic behaviors of rubber bearings for base isolation.” PhD dissertation, Dept. of Architectural Engineering, the University of Tokyo (in Japanese).
Yasaka, A., Maeda, S., and Fujimoto, N. (1988). Biaxial hysteresis model for base isolation devices, Kajima Corporation, Tokyo.
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Copyright © 2004 American Society of Civil Engineers.
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Received: Jun 24, 2002
Accepted: Aug 22, 2003
Published online: Jul 15, 2004
Published in print: Aug 2004
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