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Energy Demand in Steel Structures with Buckling Restrained Braces

좌굴이 방지된 가새가 설치된 철골조 건물의 에너지 요구량

  • 최현훈 (성균관대학교 건축공학과) ;
  • 김진구 (성균관대학교 건축공학과)
  • Published : 2003.04.01

Abstract

In this study, a story-wise distribution of hysteretic energy in steel moment resisting framse(MRF), buckling restrained braced frames(BRBF), and hinge-connected framed structures with buckling restrained braces(HBRBF) subjected to various earthquake ground excitations was investigated. Sixty earthquake ground motions recorded in different soil conditions were used to compute the energy demand in model structure. According to analysis results, the hysteretic energy in MRF and BRBF turned out to be the maximum at the base and monotonically diminishes with increasing height. However the story-wise distribution of hysteretic energy in HBRBF was relatively uniform over the height of the structure. In this case damage is not concentrated in a single story, and therefore it is considered to be more desirable than other systems. The story-wise energy distribution pattern under three different soil types turned out to be approximately the same.

Keywords

hysteretic energy demand;buckling restrained brace;inelastic behavior;energy distribution

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