Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Evaluation of Seismic Performance of Steel Frame before and after Application of Seismic Isolator

면진 장치 적용 전, 후의 철골조의 내진 성능 평가

  • 김대곤 ((주)대우 건설기술연구소) ;
  • 이상훈 ((주)대우 건설기술연구소 연구원) ;
  • 안재현 ((주)대우 건설기술연구소 책임연구원) ;
  • 박칠림 ((주)대우 건설기술연구소)
  • Published : 1998.03.01
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Abstract

The laminated elastomeric bearing and the lead-rubber bearing were designed to isolate one bay-two story steel frame which is designed for only gravity load. The seismic performance is evaluated for the designed steel frame before and after application of these seismic isolators between the super structure and the foundation. These isolators can improve the seismic capacity of the steel frame. Especially, by inserting the lead plug into the center of the laminated elastomeric bearing, the initial stiffness of th bearing can be increased, thus rather large lateral displacement can be prevented under the frequent service lateral load. During the strong earthquake, yielding of the lead can increase the capacity of the energy dissipation.

내진 설계되지 않은 일경간-이층 철골조의 면진에 사용될 적층 고무베어링과 납-고무 베어링을 설계하여 철골조와 기초 사이에 이 면진장치들을 적용하여 지진파들에 대한 내진 성능 평가를 행하였다. 이들 면진장치들을 사용하면 철골조의 내진성능이 향상된다. 특히 적층 고무베어링의 중앙에 원통형 납을 삽입함으로써 초기강성을 증가시켜, 빈번한 사용하중 하에서 구조물에 발생하는 비교적 과도한 횡변위를 구속할 수 있으며, 강한 지진파에 대해서는 이 납이 항복함으로써 에너지 소산능력을 향상시킨다.

Keywords

References

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