中文摘要：

针对震后可恢复功能的腹板摩擦耗能钢框架预应力梁柱节点,对3个设计的节点试件进行低周往复加载试验、有限元模拟和理论分析。结果表明:钢框架预应力梁柱节点在加、卸载过程中实现梁柱接触面开口和自动复位的机制,滞回曲线表现出明显的双旗帜模型,节点耗能系数βE满足大于0.25的基本要求;钢绞线最大索力均未超过90%的屈服索力;主要构件基本处于弹性状态,残余转角均很小,节点实现了震后恢复功能的目标。研究还发现,随着节点初始预应力度的提高,节点初始刚度和开口后刚度、开口临界弯矩和钢绞线最大索力都有不同程度的提高,最大开口转角和耗能能力呈下降趋势。节点有限元模拟与试验结果吻合较好,理论模型与试验及有限元结果基本吻合。

英文摘要：

Three specimens were designed and the low-cycle loading experiments , as well as finite element and theory analyses were performed for the self-centering beam-column connections using the bolted web friction devices ( WFDs) in earthquake resilient steel frames , The comprehensive results indicated that the opening at beam-column interface and self-centering mechanism were realized in the procedure of loading and unloading of self -centering beam-column connections with WFDs .The hysteresis loops of specimens were observed to have a double-flag shape obviously .And their energy dissipation ratios (βE ) all satisfied the basic requirement that βE was greater than 0.25 and the maximum PT force was below the 0.9 yield PT force .During the whole experiment procedure , main structural components of specimens always kept elastic .The residual rotations was small and the goal of self-centering after earthquake was achieved.Besides, the increment of the initial PT force leads to an increase in the initial stiffness , stiffness after opening, opening critical moment and the maximum PT force in different degrees , but a gradual decrease in maximum opening rotation the downtrend in energy dissipation .The finite element analysis agreed well with matched the experimental data .The results of the theoretical models also agreed with those of the experiment and finite element analysis .