垫板加强K型圆管节点极限承载力研究  

RESEARCH ON ULTIMATE BEARING CAPACITY OF CIRCULAR TUBULAR K-JOINTS REINFORCED WITH DOUBLER PLATE

作　　者：张明坤[1] 惠宽堂[1] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055

出　　处：《低温建筑技术》2012年第9期65-67,共3页Low Temperature Architecture Technology

摘　　要：对垫板加强K型圆管节点进行非线性有限元分析。研究结果表明,该节点主要有两种破坏模式:支管局部屈曲与垫板屈曲破坏,支管局部屈曲与垫板主管过度塑形变形的联合破坏模式;通过与K型圆管相贯节点对比,了解了垫板加强K型圆管节点荷载-位移曲线的特征,考察了相关几何参数对垫板加强K型圆管节点极限承载力的影响。Nonlinear finite element analysis is used for circular tubular K-joints reinforced with doubler plate.Two typical failure modes are discovered through the results of the research,the combination of brace local buckling and doubler plate yielding,the combination of doubler plate yielding and chord yielding with brace buckling.Comparing with circular tubular K-joints,the load-displacement curve characteristics of circular tubular K-joints reinforced with doubler plate is learned,the effects of geometric parameters on the ultimate bearing capacity of circular tubular K-joints reinforced with doubler plate are researched.

关 键 词：垫板 K型节点 极限承载力 有限元分析 

分 类 号：TU312.1[建筑科学—结构工程]