Displacement Control and Uplift Restraint for Base‐Isolated Structures
Publication: Journal of Structural Engineering
Volume 116, Issue 4
Abstract
A displacement‐control and uplift‐restraint device that can be installed within multilayer, elastomeric base‐isolation bearings is described. The device acts to limit the displacement of the bearings and is also able to resist tension forces associated with uplift. The device was tested in earthquake simulator tests of a nine‐story, one‐quarter scale steel structure conducted at the Earthquake Simulator Laboratory of the Earthquake Engineering Research Center of the University of California, Berkeley. The test structure was isolated using eight multilayer, elastomeric bearings, four of which were located at the corners of the structure and contained the restraint devices. The system was subjected to a large number of simulated earthquakes. In some tests the devices acted to control the displacements, and in others, where uplift forces were generated, the devices simultaneously limited the displacements and carried the uplift forces. The test results show that the action of the devices is smooth and that there is no sudden jerk when one comes into action. The devices can perform as a fail‐safe system for base‐isolated buildings. In this role they would be designed to act only when the ground motion is greater than that for which the base‐isolation system has been designed.
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References
1.
Griffith, M. C., Aiken, I. D., and Kelly, J. M. (1988a). “Experimental evaluation of seismic isolation of a 9‐story braced steel frame subject to uplift.” Report No. UCB/EERC‐88/05, Earthquake Engrg. Res. Ctr., Univ. of California, Berkeley, Calif.
2.
Griffith, M. C., et al. (1988b). “Experimental evaluation of seismic isolation of medium‐rise structures subject to uplift.” Report No. UCB/EERC‐88/02, Earthquake Engrg. Res. Ctr., Univ. of California, Berkeley, Calif.
3.
Kelly, J. M., Griffith, M. C., and Aiken, I. D. (1987). “A displacement control and uplift restraint device for base isolated structures.” Report No. UCB/EERC‐87/03, Earthquake Engrg. Res. Ctr., Univ. of California, Berkeley, Calif.
4.
Kelly, J. M., Beucke, K. E., and Skinner, M. S. (1980). “Experimental testing of a friction damped aseismic base isolation system with fail‐safe characteristics.” Report No. UCB/EERC‐80/18, Earthquake Engrg. Res. Ctr., Univ. of California, Berkeley, Calif.
5.
Natural rubber engineering data sheets. (1983). Malaysian Rubber Producers Res. Assoc., Hertford, England.
6.
Tarics, A. G. (1984). “The implementation of base isolation for the Foothill Communities Law and Justice Center.” Report to the Nat. Sci. Foundation and the county of San Bernardino by Reid and Tarics Assoc., San Francisco, Calif.
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Copyright © 1990 ASCE.
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Published online: Apr 1, 1990
Published in print: Apr 1990
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