Stiffness Analysis of Fiber-Reinforced Rectangular Seismic Isolators
Publication: Journal of Engineering Mechanics
Volume 128, Issue 4
Abstract
The reinforcing elements of multilayer elastomeric isolation bearings, which are normally steel plates, are replaced by a fiber reinforcement. The fiber-reinforced isolator is significantly lighter and could lead to a much less labor-intensive manufacturing process. In contrast to the steel reinforcement, which is assumed to be rigid, the fiber reinforcement is flexible in extension. This paper presents theoretical approaches for analyzing the compressive stiffness and bending stiffness of fiber-reinforced rectangular isolators. The influence of fiber flexibility on the stiffness of isolators is studied. In addition to theoretical stiffness solutions which are expressed in series form, simplified stiffness formulas based on the solutions of an infinitely long strip pad are also presented.
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References
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Tsai, H.-C., and Kelly, J. M. (2001). “Stiffness analysis of fiber-reinforced elastomeric isolators.” PEER Rep. No. 2001/05, Pacific Earthquake Engineering Research Center, Univ. of California, Berkeley.
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Information
Published In
Journal of Engineering Mechanics
Volume 128 • Issue 4 • April 2002
Pages: 462 - 470
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: May 25, 2001
Accepted: Jul 25, 2001
Published online: Apr 1, 2002
Published in print: Apr 2002
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