Performance of Ball Rubber Bearings in Low-Temperature Regions
Publication: Journal of Performance of Constructed Facilities
Volume 29, Issue 2
Abstract
This research is a complementary study to a recent experimental study on a newly developed seismic isolator called ball rubber bearing (BRB). BRB-type isolators can be easily manufactured similar to the standard elastomeric bridge bearings and can provide significant energy dissipation during an earthquake through friction provided by steel balls inside the cylindrical core. Structural response of BRBs at low temperatures has not been examined in previous research. In this research, behavior of BRBs exposed to different simulated weather conditions is tested under combined axial and cyclic lateral load. Comparison of room temperature and low-temperature test results indicates that the BRB can have slightly increased damping characteristics and horizontal stiffness in cold-weather conditions. This shift in performance has been included in the proposed design recommendations.
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Acknowledgments
The authors would like to thank TUBİTAK 109M323 and 110G093 for funding this research; the Özdekan rubber industry for manufacturing the bearings; and Dr. Mete Gercek and Dr. Cenan Ozkaya of the Yuksel Project for arranging the tests in Italy. The authors would also like to extend their thanks to the General Directorate of Highways of the Republic of Turkey.
References
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© 2014 American Society of Civil Engineers.
History
Received: Mar 21, 2013
Accepted: Nov 15, 2013
Published online: Nov 18, 2013
Discussion open until: Dec 24, 2014
Published in print: Apr 1, 2015
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