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ISSN : 1226-525X(Print)
ISSN : 2234-1099(Online)
Journal of the Earthquake Engineering Society of Korea Vol.18 No.1 pp.37-43

FEMA P695를 이용한 국내 저층 철골 중간모멘트골조의 반응수정계수 제안

한아름1), 김태완2)*, 유은종3)
1)한양대학교 첨단건축도시환경공학과

2)강원대학교 건축공학과

Proposition of Response Modification Factor of Low-rise Steel Intermediate Moment Frame in Korea using FEMA P695

Taewan Kim2)*, Han, A Rum1), Yu, Eunjong3)
2)Architectural Engineering, Kangwon National University
1)Frontier Architectural, Urban, and Environmental Engineering, Hanyang University
(Received 21 October 2013; Revised 18 November 2013; Accepted 19 November 2013)


In current seismic design code, steel moment frames are classified into ordinary, intermediate, and special moment frames. In the case ofspecial moment frames which have large R-factor, economic design is possible by reducing the design lateral force. However, there isdifficulty for practical application due to constraints such as strong column-weak beam requirement. This study evaluated if steelintermediate moment frame could maintain enough seismic capacity when the R-factor is increased from 4.5 to 6. As for the analyticalmodels, steel moment frames of 3 and 5 stories were categorized into four performance groups according to seismic design category.Seismic performances of the frames were evaluated through the procedure based on FEMA P695. FEMA P695 utilizes nonlinear staticanalysis(pushover analysis) and nonlinear dynamic analysis(incremental dynamic analysis, IDA). In order to reflect the characteristics ofKorean steel moment frames on the analytical model, the beam-column connection was modeled as weak panel zone where the collapseof panel zone was indirectly considered by checking its ultimate rotational angle after an analysis is done. The analysis result showed thatthe performance criteria required by FEMA P695 was satisfied when R-factor increased in all the soil conditions except SE-