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).

1. 서 론
 2. 납-고무 받침(LRB)의 제원 및 면진 구조물의해석 모델링
  2.1 면진장치의 적용개념
  2.2 내부온도 상승효과를 고려한 납-고무받침의 해석모델
  2.3 납-고무받침(LRB)의 제원
  2.4 사용 지진
 3. 내부온도 상승효과를 고려한 납-고무 받침의지진응답 비교
  3.1 내부온도 상승효과 반영유무에 따른 온도상승 정도와 거동특성 비교
  3.2 납-고무받침 내부 최대온도와 전단강도비
  3.3 온도상승에 의한 납-고무받침의 횡변위의 증가
  3.4 납-고무받침의 횡변위 증가로 인한 수직강성 변화
 4. 결 론
 / REFERENCES /

• 양광규(강원대학교 토목공학과) | Yang Kwang-Kyu
• 송종걸(강원대학교 토목공학과) | Song Jong-Keol Corresponding author