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http://dx.doi.org/10.5000/EESK.2002.6.4.039

Experimental Study on Characteristics of Low Hardness Rubber Bearing  

정길영 (유니슨기술연구소)
하동호 (유니슨기술연구소)
박건록 (유니슨기술연구소)
권형오 (유니슨기술연구소)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.6, no.4, 2002 , pp. 39-49 More about this Journal
Abstract
In this paper, the characteristics of RB(rubber bearing) were studied by various prototype tests on RB with low hardness rubber. The characteristics of RB were tested on displacements, repeated cycles, frequencies, vertical pressures, temperature, vertical stiffness and the capability of shear deformation. The prototype test showed that the displacement and vertical pressures were the most governing factors influencing on characteristics of RB. The effective stiffness and equivalent damping of RB showed small increment in high frequency range. After the repeated cyclic test with 50's cycles, the effective stiffness and equivalent damping of RB were almost constant compared with those of the 1st cycles due to low hysteretic damping. The shear modulus of RB was reduced after large deformation, and this value of RB was partly recovered after 40 days. Finally, the shear failure test of RB was conducted, the prototype was failed over 490% of shear strain, and real size RB was failed over 430% of shear strain.
Keywords
rubber bearing; low hardness; prototype test; effective stiffness; equivalent damping ratio;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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