半刚接钢框架内填RC墙结构侧移刚度分析  

Research on Lateral Stiffness of PR Steel Frame with RC Infill Walls

作　　者：孙国华[1,2] 何若全[1,2] 顾强[2] 郁银泉 方有珍[2] 

机构地区：[1]北京工业大学建筑工程学院,北京100022 [2]苏州科技学院土木工程学院,江苏省结构工程重点实验室,江苏苏州215011 [3]中国建筑标准设计研究院,北京100044

出　　处：《沈阳建筑大学学报（自然科学版）》2011年第4期613-620,共8页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(50378058)

摘　　要：目的研究半刚接钢框架内填RC墙结构(PSRCW)抗侧移刚度的计算方法,为PSRCW结构的弹性变形计算提供参考.方法基于10榀1/3缩尺、两层、单跨PSRCW结构的低周往复加载试验及理论分析,研究了PSRCW结构整体抗侧移刚度及刚度退化规律.结果 PSRCW结构抗侧移刚度大,刚度退化均匀缓慢.内填墙厚度、抗剪连接件形式、混凝土强度对结构整体抗侧移刚度影响较大,节点形式、抗剪连接件数量对结构抗侧移刚度影响较小.结论通过对PSRCW结构的变形分析所建立的初始弹性抗侧移刚度的理论模型及公式,可以较好地计算PSRCW结构的抗侧移刚度,理论值与试验值吻合较好.The method for calculating the lateral stiffness of partially-restrained steel frame with RC infill walls was studied to provide a referrence for elastic deformation.Based on the experimental investigation of ten one-bay,two-story partially-restrained steel frame with reinforced concrete walls（PSRCW）on one third scale under low reversed cyclic loading,overall stiffness and stiffness reduction of PSRCW were analyzed.The results show that PSRCW has large lateral stiffness and slowly-degraded stiffness.Thickness of infill wall,type of shear connector and concrete strength have large effect on initial lateral stiffness,but type of PR connection and quantity of shear connector have little effect on stiffness.Calculation method for the initial lateral stiffness of PSRCW is proposed through deformation analysis of PSRCW.The calculated values of the lateral stiffness match well with the experimental ones.

关 键 词：半刚接钢框架 内填墙 抗侧移刚度 刚度退化 

分 类 号：TU398.2[建筑科学—结构工程] TU317.1