Structural Engineering and Mechanics

  • 제67권1호
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  • Pages.69-78
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  • 2018
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Variations in the hysteretic behavior of LRBs as a function of applied loading

  • Ozdemir, Gokhan (Dept. of Civil Eng., Anadolu University) ;
  • Bayhan, Beyhan (Dept. of Civil Eng., Bursa Technical University) ;
  • Gulkan, Polat (Dept. of Civil Eng., Middle East Technical University, Northern Cyprus Campus)
  • 투고 : 2017.10.03
  • 심사 : 2018.04.13
  • 발행 : 2018.07.10
⟨ 이전 논문 다음 논문 ⟩

초록

The study presented herein focused on the change in hysteretic force-deformation behavior of lead rubber bearings (LRBs). The material model used to idealize response of LRBs under cyclic motion is capable of representing the gradual attrition in strength of isolator unit on account of lead core heating. To identify the effect of loading history on the hysteretic response of LRBs, a typical isolator unit is subjected to cyclic motions with different velocity, amplitude and number of cycles. Furthermore, performance of an LRB isolated single degree of freedom system is studied under different seismic input levels. Finally, the significance of lead core heating effect on LRBs is discussed by considering the current design approach for base isolated structures. Results of this study show that the response of an LRB is governed strongly by the amplitude and number of cycles of the motion and the considered seismicity level.

키워드

참고문헌

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피인용 문헌

  1. Experimental and numerical study on seismic behavior of a self-centering railway bridge pier vol.21, pp.2, 2018, https://doi.org/10.12989/eas.2021.21.2.173