Effectiveness of Elliptical Rolling Rods for Base Isolation
Publication: Journal of Structural Engineering
Volume 124, Issue 4
Abstract
Elliptical rolling rods between the base and foundation of a structure provide a new base isolation system. Herein, the effectiveness of elliptical rolling rods for isolating a multistory building against earthquake forces is investigated. A theoretical formulation for obtaining seismic response of a multistory building supported on elliptical rolling rods is developed. Due to the nonlinear force-deformation behavior of elliptical rolling rods, the seismic response of the system is obtained using an iterative numerical integration technique. The effectiveness of elliptical rolling rods is studied by comparing the response between isolated and corresponding fixed base systems for different eccentricities of the rods. It is shown that elliptical rolling rods are quite effective in reducing the seismic response of the system without undergoing large base displacements.
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References
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Buckle, I. G., and Mayes, R. L.(1990). “Seismic isolation: history, application and performance—a world overview.”Earthquake Spectra, 6(2), 161–202.
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Jangid, R. S., and Datta, T. K.(1995). “Seismic behaviour of base isolated building—a state-of-the-art-review.”J. Struct. and Build., 110(2), 186–203.
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Lin, T. W., and Hone, C. C.(1993). “Base isolation by free rolling rods under basement.”Earthquake Engrg. and Struct. Dynamics, 22(3), 261–273.
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Lin, T. W., Chern, C. C., and Hone, C. C.(1995). “Experimental study of base isolation by free rolling.”Earthquake Engrg. and Struct. Dynamics, 24(12), 1645–1650.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 124 • Issue 4 • April 1998
Pages: 469 - 472
Copyright
Copyright © 1998 American Society of Civil Engineers.
History
Published online: Apr 1, 1998
Published in print: Apr 1998
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