偏心钢梁-钢管混凝土柱内加强环式节点受力性能分析  

Mechanical Behavior Analysis on an Eccentric Concrete-Filled Steel Tubular Column and Steel Beam Joint with Inner Diaphragm

作　　者：孙飞飞[1,2] 周树青 邱介尧 包联进[3] SUN Feifei;ZHOU Shuqing;QIU Jieyao;BAO Lianjin(College of Civil Engineering,Tongji University,Shanghai 200092,China;State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China;East China Architectural Design&Research Institute Co.,Ltd.,Shanghai 200002,China)

机构地区：[1]同济大学土木工程学院,上海200092 [2]同济大学土木工程防灾国家重点实验室,上海200092 [3]华东建筑设计研究院有限公司,上海200002

出　　处：《建筑钢结构进展》2023年第4期68-78,共11页Progress in Steel Building Structures

摘　　要：建立了钢管混凝土内加强环式节点的ABAQUS有限元模型,通过参数分析考察了偏心对节点刚度和承载力性能的影响。在刚度方面,分别考察了偏心对节点连接刚度和节点剪切刚度的影响。在节点承载力方面,在有限元分析结果的基础上选取了较为合理的计算理论,并通过理论推导对其进行了考虑偏心影响的计算方法修正,同时在节点偏心的基础上进一步考虑了加强环厚度、加强环宽度、梁轴线夹角和节点区钢管壁厚4个参数的影响,并通过回归分析在计算理论中纳入了影响较大的参数。A finite element analysis(FEA)model of the CFST joint with inner diaphragm is built using FEA software ABAQUS.Then a parametric study of key parameters in connection design is conducted in order to investigate the influence of eccentricity on the stiffness and bearing capacity of the connection.In the matter of stiffness,the influence of eccentricity on shear stiffness and deformation is researched.In the matter of bearing capacity,an analytical model is chosen based on the results of the finite element analysis,and then a modification accounting for eccentricity is provided.Also,a parametric study of other parameters such as the thickness of diaphragm,the width of diaphragm,the angel of the beam axis of two sides,and the thickness of the column steel tube is conducted.The results are shown in regression analysis.

关 键 词：钢管混凝土 偏心 梁柱节点 内加强环 参数分析 回归分析 

分 类 号：TU398.9[建筑科学—结构工程]