Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Inelastic Response Evaluation of Lead-Rubber Bearing Considering Heating Effect of Lead Core

납심의 온도상승효과를 고려한 납-고무받침(LRB)의 비탄성응답 평가

  • Yang, Kwang-Kyu (Department of Civil Engineering, Kangwon National University) ;
  • Song, Jong-Keol (Department of Civil Engineering, Kangwon National University)
  • Received : 2016.05.18
  • Accepted : 2016.07.20
  • Published : 2016.09.01
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Abstract

The lead-rubber bearing (LRB) dissipates seismic energy through plastic deformation of lead core. Under large-displacement cyclic motion, the temperature increases in the lead core. The shear strength of a lead-rubber bearing is reduced due to the heating effect of the lead core. In this study, the seismic responses such as displacement increasing, shear strength and vertical stiffness degradations of LRB due to the heating effect are evaluated for design basis earthquake (DBE) and beyond design basis earthquake (150% DBE, 167% DBE, 200% DBE).

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References

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