摘要
以钢管混凝土平面K型节点为研究对象,采用三维实体单元模拟钢管与混凝土,考虑材料非线性、钢管与混凝土接触非线性以及几何非线性,讨论在节点荷载作用下结构的应力分布、塑性发展、极限承载力和破坏模式,并对影响节点承载力的诸参数进行详细分析。根据参数分析结果得出几点结论,可为钢管混凝土桁架节点的设计提供参考依据。
Some plane K-type oncrete-filled steel tube joints are considered in this paper.3-D solid finite elements are utilized to simulate the steel tube and the concrete.The material nonlinearity,contact nonlinearity,and geometric nonlinearity are taken into account.The stress distribution,plastic development,ultimate bearing capacity and failure mode of the structure under joint loading are discussed and the effects on capacity of the joints are parametrically analyzed.Some conclusions were obtained based on the parametric analysis and the results can be used to provide the reference for the design of K-type concrete-filled steel tube joints.
出处
《钢结构》
2011年第7期1-6,共6页
Steel Construction
基金
重庆交通大学桥梁结构工程交通行业重点实验室开放基金项目(CQSLBF-Y09-3)
关键词
极限承载力
有限元分析
钢管混凝土
非线性
ultimate bearing capacity
finite element analysis
concrete filled steel tube
nonlinearity
