钢框架带悬臂梁段拼接节点非线性分析  

Nonlinear Analysis on the Steel Frame Joint with Cantilever Beam Splicing

作　　者：常鸿飞[1,2] 夏军武[1,2] 孙冬明[2] 

机构地区：[1]中国矿业大学深部岩土与地下工程国家重点实验室,徐州221116 [2]中国矿业大学力学与建筑工程学院结构系,徐州221116

出　　处：《结构工程师》2011年第2期57-62,共6页Structural Engineers

基　　金：国家自然科学基金(50774081);十一五支撑计划重大项目基金(2006BAJ14B07;2006BAJ05A08);江苏省研究生科技创新计划;江苏省土木工程博士研究生创新基金

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。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.

关 键 词：钢框架 带悬臂梁段拼接节点 非线性 变分 有限元 

分 类 号：TU391[建筑科学—结构工程]