접합부 회전성능에 따른 중간 철골 모멘트 골조의 내진 성능 평가 - Ⅱ 원인 평가 및 대안

문기훈¹⁾, 한상환^1)*, 하성진¹⁾

¹⁾한양대학교 건축공학과

Seismic Performance Evaluation According to Rotation Capacity of Connections for Intermediate Steel Moment Frames – II. Cause Evaluation and Alternative

Sang Whan Han^1)*, Moon, Ki Hoon¹⁾, Ha, Seung Jin¹⁾

¹⁾Department of Architectural Engineering, Hanyang University

(Received 19 November 2013; Revised 15 January 2014; Accepted 3 February 2014)

Abstract

This paper is the sequel of a companion paper (I. Performance Evaluation) evaluating the relation between the seismic performance ofsteel intermediate moment frames (IMFs) and the rotation capacity of connections. The evaluation revealed that the seismic performanceof IMFs having the required minimum rotation capacity suggested in the current standards did not meet the seismic performance criteriapresented in FEMA 695. Therefore, thepresent study evaluates the causes of the vulnerable seismic performance for steel IMFs andproposes alternatives to satisfy the seismic performance suggested in FEMA 695. To that goal, the results of nonlinear analysis, which arethe pushover analysis and the incremental dynamic analysis, are examined and evaluated. As a result, high-rise IMF systems are seen tohave the lower collapse margin ratio after connection fracture than row-rise IMF systems and, the actual response isfound to comparedtothedesign drift ratio acting on design load design. Finally, the minimum design load values are proposed to meet the seismicperformance suggested in FEMA 695 for IMF systems having vulnerable seismic performance.

Key Words : Intermediate moment frame,Rotation capacity,Seismic performance,FEMA 695,Seismic design parameters

Reference

Journal Abbreviation J. Earthq. Eng. Soc. Korea
Frequency Bimonthly
Doi Prefix 10.5000/EESK
Year of Launching 1997
Publisher Earthquake Engineering Society of Korea

Indexed/Tracked/Covered By

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submission.eesk-j.or.kr

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