高位转换大梁型钢混凝土梁柱节点极限承载力研究

Research on Force Carrying Capacity of a SRC Beam-Column Connection at a High-Position Transfer Girder

为满足建筑功能多样化和不同结构体系等要求,同一建筑中不同功能的楼层常常采用型钢混凝土(SRC)转换大梁来分隔。由此形成的梁柱节点受力情况比较复杂,为保证结构的安全,须进行专门的试验研究和计算分析。文中以上海虹桥机场综合培训大楼为工程背景,对该大楼高位转换大梁SRC梁柱节点进行了结构模型拟静力试验,并分别采用理论计算及ANSYS分析软件进行有限元模拟分析,从多方面对栓焊连接SRC梁式转换节点的破坏形态及承载能力等进行了研究,验证了该节点的可靠性。

To meet the requirement of diverse architectural utilizations and various structural systems, the stories with different functions are usually separated by steel reinforced concrete （SRC） transfer girders. Due to the complexity of stress and the consideration of structural safety, the SRC beam-column connection necessitates detailed study, including pseudo-static test and computational analysis. According to the practical engineering, a SRC beam-column connection model, with features mentioned above, was tested by pseudo- static test system and examined through theoretical calculations and 3-D finite element method in this paper. Both the failure mode and bearing capacity of the connection were studied and its reliability was also verified.