【摘要】 对底部矩形柱上部异形柱框架结构以及纯异形柱框架结构进行了时程地震反应分析。并对二者分析的结果进行了比较。探讨了不同底层层高和不同底层矩形柱配筋率对结构地震反应的影响。分析结果表明,底部矩形柱上部异形柱框架比纯异形柱框架结构底层位移明显减小,各层层间位移分布均匀,对抗震有利。更多还原

【Abstract】 Seismic responses of the hetero-column frame with bottom rectangle columns are analyzed by time history method and are compared with the normal hetero-column frame. Effects of bottom height and steel ratio of the rectangle column of the frame on the seismic response are discussed. It is proved that, compared with the normal hetero-column frame,bottom displacement of the former frame is reduced and the relative storey drifts are distributed more evenly , which are propitious to seismic resistance.更多还原