左右梁位置偏移的外加强环式钢结构梁柱节点非线性有限元分析  

NONLINEAR FINITE ELEMENT ANALYSIS OF STEEL BEAM-TO-COLUMN JOINTS WITH EXTERNAL ANNULAR PLATE AND AN OFFSET IN RIGHT AND LEFT BEAM POSITIONS

作　　者：隋伟宁[1] 白雪[1] 李帼昌[1] 白利婷[1] 

机构地区：[1]沈阳建筑大学土木工程学院,沈阳110168

出　　处：《工业建筑》2013年第S1期313-316,333,共5页Industrial Construction

基　　金：国家自然科学基金项目(No.51178275)

摘　　要：考察了左右梁位置偏移的外加强环式圆管柱-H型梁节点在单调荷载和低周往复荷载作用下的弹塑性力学性能。通过有限元软件ABAQUS对部分钢框架节点进行分析,研究了节点域中间环板的面积参数和左右梁的偏移高度的变化对应力分布、塑性区分布及极限承载力的影响,并比较了上下核心区和中间核心区的受力状态。最后,给出了异型节点设计计算的相关建议。In this paper,elastic-plastic mechanical performances of steel beam-to-column joints with external annular plate and an offset in right and left beam positions under monotonic and reversed loading were analyzed.Finite element analyses of the joints were performed using ABAQUS computer program.The impacts of variation of the area parameter of external annular plate and the offset value in right and left beam positions on the stress distribution,the plastic areas distribution and the ultimate bearing capacity were investigated.The stress states between the middle panel zone and the top and bottom panel zone were analyzed and compared.Finally advices on the design and construction of the abnormal joint were given.

关 键 词：钢结构 异型节点 外加强环 有限元分析 节点域 

分 类 号：TU391[建筑科学—结构工程]