中文摘要：

利用平面杆件结构变分方法,考虑材料的非线性,分别对拼接等强型和拼接削弱型带悬臂梁段拼接节点进行分析,得到两类节点的承载力及弹塑性变形的表达式。为了验证解析方程的可靠性,以某6层钢框架的边节点为原型,确定BASE节点的相关构造参数,削弱其等强拼接进而得到WBS节点的设计参数。对两节点分别进行有限元分析和理论求解,对比发现理论解和有限元解吻合较好,表明所作非线性分析得到的方程可以用于该类型节点单向加载的分析。

英文摘要：

Using planar variational method and considering the material nonlinearity,an equal strength and a weak strength steel frame joint with cantilever beam splicing are analyzed.Equations for the strength and deformation of the joints are recommended respectively.To check the reliability of the equations,we simulated the joints with finite element method.The model of the BASE joint represents an equal strength exterior beam-to-column joint isolated from a moment frame at the inflection points of the column and the beam,and the configuration of the WBS joint is determined by weaken the beam splicing of BASE joint.By comparing the finite element results and the theory solutions,we found quite good agreement of them.The recommended equations are suitable for the nonlinear analysis of this kind of joint.