Abstract

국내 구조기준인 KBC2009는 성능기반설계의 설계지진에서의 인명안전수준을 만족시키기 위한 기준은 명시적으로 제시하고 있지만 최대급지진에서의 붕괴방지수준을 만족하기위한 기준은 암시적으로 제시하고 있다. 따라서 본 연구에서는 층수별로 구분된 세 개의 철골중간모멘트골조의 표본건물을 설계 및 모델링하였다. 비선형 시간이력해석을 통하여 설계지진에서의 인명안전수준의 만족여부와 최대급지진에서 붕괴방지수준의 만족여부를 조사하였다. 그리고 이러한 내진성능목표들을 달성하기 위한 붕괴성능에 가장 큰 영향을 미치는 변수인 저층부 기둥의 소성변형능력을 변화시켜 표본건물의 전체적, 국부적 동적응답을 관찰하였다. Domestic structural design code, KBC2009 specify the criteria for satisfying life safety level in design earthquake. But criteria for satisfying collapse prevention level in maximum considered earthquake are stated allusively. This study designed and modeled three prototype structure of steel intermediate moment resisting frame classified with the number of story. Through nonlinear time history analysis, adequacy of life safety level in design earthquake and collapse prevention level in maximum considered earthquake are evaluated in this study. global and local dynamic response of prototype structures were observed changing the plastic deformation capacity which is one of the most important factor in collapse capacity to achieve two seismic capacity goals; life safety level in design earthquake and collapse prevention level in maximum considered earthquake.

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