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ISSN:
2319-6009 (Online)
Abbreviated title:
Int. J Struct. Civ. Eng. Res.
Editor-in-Chief:
Prof. Eric Strauss
Associate Editor:
Assoc. Prof. Wenxing Zhou
Executive Editor:
Ms. Cherry L. Chen
DOI:
10.18178/ijscer
Abstracting/Indexing:
Google Scholar, Cross-ref, CNKI,
etc.
E-mail questions to:
IJSCER Editorial Office
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Editor-in-Chief
Prof. Eric Strauss
Michigan State University, USA
I am very excited to serve as the Editor-in-Chief of the International Journal of Structural and Civil Engineering Research
(IJSCER)
and hope that the publication can enrich the readers’ experience...
What's New
2024-08-27
August 27th, 2024 News! Vol. 13, No. 3, 2024 issue has been published online
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Volume 4, No. 3, August 2015
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Optimum Design of Lead-Rubber Bearing System Under the Non-Stationary Random Earthquake Ground Motion
J. Fan, X. H. Long, and L. Li
School of Civil Engineering and Mechanics, Hubei Key Laboratory of Control Structure, Huazhong University of Science and Technology, Wuhan, China
Abstract
—In this study, we used a non-stationary random earthquake Clough-Penzien model to describe earthquake ground motion. Using stochastic direct integration in combination with an equivalent linear method, we established a solution for the non-stationary response of Lead-Rubber Bearing (LRB) system to a stochastic earthquake. We used two parameters to develop an optimization method for bearing design: the post-yielding stiffness and the normalized yield strength of the isolation bearing. Using the minimization of the maximum energy absorption level of the upper structure subjected to an earthquake as an objective function, and with the constraints that the bearing failure probability is no more than 5% and the second shape factor of the bearing is less than 5, we present a calculation method for the two optimal design parameters. In this optimization process, the Radial Basis Function (RBF) response surface was applied, instead of the implicit objective function and constraints, and a Sequential Quadratic Programming (SQP) algorithm was used to solve the optimization problems.
Index Terms
—seismic isolation structure, optimal design; Lead-Core Rubber Bearing (LRB), stochastic analysis
Cite: J. Fan, X. H. Long, and L. Li, "Optimum Design of Lead-Rubber Bearing System Under the Non-Stationary Random Earthquake Ground Motion," International Journal of Structural and Civil Engineering Research, Vol. 4, No. 3, pp. 243-247, August 2015. doi: 10.18178/ijscer.4.3.243-247
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