Analytical Model for Elastoplastic and Creep-Like Behavior of High-Damping Rubber Bearings
Publication: Journal of Structural Engineering
Volume 141, Issue 9
Abstract
In the present study, a new analytical model of high-damping rubber bearings (HDRBs) for time-history analysis is proposed. The proposed model is used in the evaluation of elastoplastic and creep-like behavior of HDRBs under bidirectional seismic and strong wind loading. The analytical model was developed by reducing the degrees of freedom of a new type of constitutive law that was proposed by the authors for finite-element analysis of seismic isolation bearings. First, the validity of the proposed model for time-history response analysis was examined through various tests of HDRBs under unidirectional and bidirectional loading. The analytical results agreed well with the test results. Next, wind loading tests were conducted and the reproducibility of creep-like behavior of HDRBs under wind loading was evaluated. The effectiveness of the proposed model was verified by the tests, and the limitations of the applicability of the proposed model were determined.
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Acknowledgments
The bidirectional loading tests were conducted as part of the activities of the subcommittee for HDRBs in the Japan Society of Seismic Isolation (JSSI). The recorded ground motion data used in the seismic response analyses were provided by the National Research Institute for Earthquake Science and Disaster Prevention. The present study was supported in part by a Grant-in-Aid for the Promotion of Architectural Standardization from the Ministry of Land, Infrastructures, Transport and Tourism. Finally, the authors would like to thank Mr. Takenaka and Mr. Kondo for their support and for providing the wind response loading data.
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Published In
Journal of Structural Engineering
Volume 141 • Issue 9 • September 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: May 28, 2013
Accepted: Aug 20, 2014
Published online: Oct 8, 2014
Discussion open until: Mar 8, 2015
Published in print: Sep 1, 2015
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