装配式钢管混凝土梁柱节点的抗震性能研究  

Study on the seismic performance of prefabricated concrete filled steel tube beam-column joints

作　　者：未晓丽 王景玄[2] WEI Xiaoli;WANG Jingxuan(School of Civil Engineering,Hexi University,Zhangye 734000,China;School of Civil Engineering,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]河西学院土木工程学院,甘肃张掖734000 [2]兰州理工大学土木工程学院,甘肃兰州730050

出　　处：《青海大学学报》2023年第4期78-85,108,共9页Journal of Qinghai University

基　　金：河西学院校长科研创新基金项目(XZ2019011)。

摘　　要：为了探究新型装配式钢管混凝土梁柱节点的抗震性能,本文利用ABAQUS有限元软件建立了 5个节点数值模型,在合理选择材料本构模型及焊接模拟方法的基础上,计算各节点在水平低周往复荷载作用下的滞回性能,获得滞回曲线、骨架曲线、延性及耗能能力等抗震性能指标.结果表明:水平往复荷载作用下,随着节点域梁端延伸长度的增加,节点的位移延性系数呈增大趋势;当延伸长度在一定范围内时,节点的能量耗散系数及等效黏滞系数均会随之呈增大趋势.由此建议了钢管混凝土柱钢梁节点域梁端延伸长度的合理范围,以期为钢管混凝土梁柱节点在装配式住宅中的应用提供参考.In order to explore the seismic performance of a new prefabricated concrete filled steel tube(CFST)beam-column joints,five joint numerical models are established using ABAQUS finite element software.The hysteresis performance of each joint under the horizontal low cycle reciprocating loads are calculated on the basis of reasonable selection of material constitutive models and welding simulation methods.Seismic performance indicators such as hysteresis curve,skeleton curve,ductility and energy dissipation capacity are obtained as well.The results indicate that under the action of horizontal reciprocating loads,the displacement ductility coefficient of the joint increases with the increase of extension length of beam end in the node domain.The energy dissipation coefficient and equivalent viscosity coefficient of the joint will be increased accordingly when the extension length is within a certain range.Therefore,a reasonable range of beam end extension length in the joint domain of CFST beam-column is suggested so as to provide reference for the application of CFST beam-column joints in prefabricated residential buildings.

关 键 词：装配式 钢管混凝土 延性 能量耗散系数 等效黏滞系数 

分 类 号：TU398[建筑科学—结构工程]