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RC 고층건물 성능기반 내풍설계의 적용성 연구

Case Study and Research on Performance-Based Wind Design of RC Tall Buildings

강현구|김민규|정승용
한국풍공학회|2021.09|한국풍공학회지 (Journal of the Wind Engineering Institute of Korea)|제25권 제3호|pp. 119-128

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참고문헌

키워드

고층건물비탄성 설계Inelastic DesignPerformance-Based Wind Design성능기반 내풍설계비선형 시간이력 해석High-Rise BuildingNonlinear Time History Analysis

초록

이 연구에서는 철근콘크리트 고층건물의 사례연구를 통해 성능기반 내풍설계를 수행하였고 그 적용성을 평가하였다 . 초기 설 계 시 비탄성 거동 도입을 위해 공진성분을 절반으로 줄여 설계하고 , 이에 대한 비탄성 성능을 검증하였다 . 비탄성 해석을 위한 해석 모델링 방법을 제시하고 , 잦은 설계 변경에서도 적용할 수 있도록 시간이력 풍하중은 설계기준에서 제시하는 파워스펙트럼밀도 함수 로부터 재생하였다 . 이 때 비선형 해석을 위한 시간이력 하중 재생 시 고려해야 할 사항들을 함께 제시하였다 . 해석 결과 공진성분을 줄여 설계했음에도 비탄성 거동은 수평부재에서만 발생하였고 , 소성회전각은 즉시거주 성능 수준을 충족하였다 .

Abstract

In this research, a case study and research on performance-based wind design of reinforced concrete tall building was carried out. To introduce inelastic behavior, resonant component was reduced by half in initial design, and its inelastic performance was verified. Modeling methods for inelastic behavior were presented. For projects with frequent design changes, time history wind loads were generated from power spectral density functions presented in design codes. And considerations for time history generation for nonlinear analysis were presented. Although the building was designed by reducing resonant component, the inelastic behavior was shown only from horizontal members, and their plastic rotations satisfied the immediate occupancy performance level.

참고문헌 (38)

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