Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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Performance Evaluation of Optimized Flexure-Dominated Steel Strip Dampers under Monotonic Loading

최적형상을 갖는 휨지배형 강재스트립댐퍼의 단조성능 평가

  • 우승기 (고려대학교 건축사회환경공학과) ;
  • 이창환 (고려대학교 건축사회환경공학과) ;
  • 주영규 (고려대학교 건축사회환경공학과) ;
  • 김상대 (고려대학교 건축사회환경공학과)
  • Published : 2013.02.28
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Abstract

Steel strip dampers have been used to reduce earthquake damage of structures by their plastic behavior. Prismatic strip is the most common shape of them but stress concentration occurs on its ends. Stress concentration results in early failure of the dampers under cyclic loading. Some modified shapes have been proposed but stress concentration rather occurs on their center when large displacement applied. In this study, new shapes were suggested in order to relieve stress concentration by improving previous shapes and performance evaluation of it was carried out under monotonic loading. Test results showed that new shapes are more efficient in energy absorption and alleviate stress concentration. In addition, they could resist very large load beyond their plastic strength.

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References

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