Abstract
본 논문에서는 푸쉬오버해석을 통해 철근콘크리트 중간모멘트골조의 반응수정계수를 확인하기 위하여 5층 구조물을 KBC2009에 맞게 구조설계 하였다. 보 및 기둥 부재의 휨모멘트-곡률 관계는 화이버 모델로 확인하였으며 보-기둥 접합부 모멘트-회전각 관계는 Simple and Unified Joint Shear Behavior Model과 보-기둥 접합부 모멘트 평형관계를 이용하여 확인하였다. 푸쉬오버해석 결과 보-기둥 접합부 비탄성 전단거동을 무시하는 경우 구조물의 강도가 과대평가 되었다. 반응수정계수는 내진설계범주 C에 대하여 설계한 경우 평균 7.78, 내진설계범주 D에 대하여 설계한 경우 평균 3.64로 평가되었다. In this study, the response modification factor for a RC IMRF is evaluated via pushover analysis, where 5-story structures were designed in accordance with KBC2009. The bending moment-curvature relationship for beams and columns was identified with a fiber model, and the bending moment-rotation relationship for beam-column joints was calculated using a simple and unified joint shear behavior model and the moment equilibrium relationship for the joint. The results of the pushover analysis showed that the strength of the structure was overestimated with negligence of the inelastic shear behavior of the beam-column joint, and that the average response modification factor for category C was 7.78 and the factor for category D was 3.64.
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