【摘要】 跃层柱在公共建筑中出现较多,其计算长度较长,刚度相比于普通柱较小,弹性状态下分担剪力较小。进入弹塑性阶段后,普通柱首先出现塑性铰,刚度降低,结构整体剪力分配发生变化,结构受力趋于复杂。文中根据塑性铰理论分析了长、短柱的弹塑性变形、延性系数;在此基础上,用静力弹塑性方法分析了两层跃层结构进入弹塑性状态后的剪力分配情况,研究了普通柱和跃层柱的塑性铰发展规律。更多还原

【Abstract】 The skip-floor structures are widely used in public buildings.Columns in skip-floor structures usualy have larger calculation length comparing with common columns,and absorb less shear force as their smaller stiffness.As a structure get into elasto-plastic stage gradually,the stiffness of common columns decays rapidly as plastic hinges appear,therefore the shear-force redistribution in whole structure will happen.Based on the plastic hinge theory,the elasto-plastic deformation,ductility factor of superlong and common columns were anallzed in this paper.Meanwhile,based on pushover method,the shear-force redistribution of a two-story skip-floor structure under elasto-plastic condition was also analyzed,and the development regulation of plastic hinges in columns was discussed.更多还原