方钢管混凝土柱内隔板式节点骨架曲线的确定方法  

Method for calculation of skeleton curves of connections of concrete-filled steel square tubular columns with inner diaphragms

作　　者：聂建国[1] 秦凯[2] 

机构地区：[1]清华大学,北京100084 [2]国家开发银行江苏省分行,江苏南京210024

出　　处：《土木工程学报》2008年第4期1-7,共7页China Civil Engineering Journal

基　　金：国家自然科学基金(50438020);长江学者和创新团队发展计划(IRT00736)

摘　　要：基于方钢管混凝土柱内隔板式节点的低周反复荷载试验,对其弯矩-层间转角变形骨架曲线进行较为深入的研究与分析,提出方钢管混凝土柱内隔板式节点弯矩-层间转角变形骨架曲线的三折线模型。模型将节点层间转角变形分解为3部分:梁变形、柱变形和节点变形,分别进行计算,其中节点变形采用改进组件法计算。理论模型与多组试验结果进行对比,结果表明,弹性阶段下模型与试验结果吻合较好,弹塑性阶段模型虽存在一定误差,但仍具有参考意义。Based on experiments of connections of concrete-filled steel square tubular columns with inner diaphragms, the moment-story drift rotation skeleton curves were studied systematically and a tri-linear model was proposed. In the theoretical model, the story drift rotation is decomposed into three parts, i.e., beam deformation, column deformation and joint deformation. The joint deformation can be calculated by using the modified component method. The results calculated from the theoretical model and the available experimental data from different studies were compared and shown to be in agreement with each other in the elastic phase, whereas there are differences in the elasto-plastic phase. Although there were differences between the tri-linear model results and the experimental data, the calculation method can still be employed in future study and seismic design.

关 键 词：方钢管混凝土柱 内隔板式节点 弯矩-层间转角变形骨架曲线 三折线模型 

分 类 号：TU375.3[建筑科学—结构工程]