钢管珊瑚混凝土柱-钢梁外加强环节点抗震性能有限元分析  

Finite Element Analysis of Seismic Performance of Coral Concrete-filled Steel Tube Column-steel Beam Joints with Outer Stiffening Rings

作　　者：何国瑞 郑云[2] 吴迈 HE Guo-rui;ZHENG Yun;WU Mai(School of Civil and Transportation Engineering,Hebei University of Technology,Tianjin 300401,China;China Metallurgical Construction Research Institute Co.,Ltd.,Beijing 100088,China)

机构地区：[1]河北工业大学土木与交通学院,天津300401 [2]中冶建筑研究总院有限公司,北京100088

出　　处：《混凝土与水泥制品》2020年第8期75-80,共6页China Concrete and Cement Products

基　　金：“十三五”国家重点研发计划项目(2017YFC0703403);国家自然科学基金项目(51578559)。

摘　　要：通过ABAQUS有限元分析软件对钢管珊瑚混凝土柱-钢梁外加强环节点模型进行了非线性分析,以珊瑚混凝土强度和轴压比为参数,分析了此类节点的破坏特征、梁端荷载-位移曲线、骨架曲线、刚度退化以及耗能性能。结果表明,不同珊瑚混凝土强度的节点刚度退化趋势相同,随着珊瑚混凝土强度的提高,节点的承载力和累计耗能均逐渐增大,但效果不明显。轴压比越大,累计耗能越小,轴压比在0.2~0.4时,随着轴压比的增加,承载力下降不明显,轴压比大于0.4时,随着轴压比的增加,节点承载力下降迅速。不同参数下的钢管珊瑚混凝土柱-钢梁外加强环节点的滞回曲线均较为饱满,具有很好的抗震性能和耗能能力,有广泛的应用前景。Nonlinear analysis of coral concrete-filled steel tube column-steel beam joints with outer stiffening rings were carried out through ABAQUS finite element analysis software,considering the effect on the strength of coral concrete and axial compression ratio,failure characteristics,load-displacement curve at the end of beam,skeleton curves,stiffness degradation and energy dissipation performance were studied.The results show that the stiffness degradation trend of different coral concrete strength is the same,with the increase of coral concrete strength,the bearing capacity and cumulative energy consumption of the joints increase gradually,but the effect is not obvious.The larger the axial pressure ratio,the smaller the cumulative energy consumption,when the axial pressure ratio is 0.2~0.4,the bearing capacity decreases slowly with the increase of the axial pressure ratio,when the axial pressure ratio is greater than 0.4,the bearing capacity of the joints decreases rapidly with the increase of the axial pressure ratio.The hysteresis curves of coral concrete-filled steel tube column-steel beam joints with outer stiffening rings under different parameters are full,which has good seismic performance,energy dissipation ability,and wide application prospect.

关 键 词：钢管珊瑚混凝土柱 节点 抗震性能 有限元分析 

分 类 号：TU375[建筑科学—结构工程]