SEISMIC RESPONSE OF SIX-STORY ECCENTRICALLY BRACED STEEL FRAMES WITH COLUMNS PARTIALLY ALLOWED TO UPLIFT
Previous studies have suggested that rocking vibration accompanied with uplift motion might reduce the seismic damage of buildings subjected to strong earthquake motions. In this paper, the seismic response of eccentrically braced steel frames with partial columns allowed to uplift is evaluated and compared with that of fixed-base frame by numerical analyses, whose prototype test frame of a full-scale six-story eccentrically braced steel building structure was tested by pseudo-dynamic testing technique in Tsukuba in 1982 to 1984. The results show that the base shears in the column-uplift frames are significantly reduced as compared to the fixed-base frames, while the maximum roof drifts of the uplift models are larger than those of the fixed-base models regardless of the input motion intensity because the rotational rigidity of the uplift-column bases in the uplift model decreases.
inelastic seismic response analysis braced steel frame rocking vibration column uplift yielding base plate
M. Midorikawa S. Toyomaki H. Hori T. Asari T. Azuhata T. Ishihara
Graduate School of Engineering, Hokkaido University, Sapporo, Japan Takenaka Corporation Former Graduate Student of Hokkaido University, Nagoya, Japan National Institute for Land and Infrastructure Management, Tsukuba, Japan
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）