摘要
不规则布置梁节点的设计是钢结构设计中的难点.文中以不规则布置梁加强环式梁柱节点为研究对象,进行了该类型节点的足尺模型试验,了解节点的受力性能和破坏机理.基于试验结果,采用理想弹塑性应力-应变关系和Von Mises屈服准则,并考虑几何非线性的影响,建立了与试验模型对应的有限元分析模型.在此模型基础上,利用有限元程序进行了参数分析.综合试验、有限元分析结果,提出了不规则布置梁加强环式梁柱节点承载力和刚度的计算方法.
For a steel structure, it is difficult to design reasonable joint to solve this problem, a typical kind of full-scale beam-column joint stre on the irregularly-arranged beam. order ngthened with stiffening ring on the irregularly-arranged beam is modeled and tested, and the structural behavior and collapse mechanism of the joint are also investigated. Based on the experimental results, a finite-element analyzing model is established according to the elastic-perfectly plastic model, the Von Mises yield criterion and the geometric nonlinearity. The proposed nonlinear finite element model is then employed to carry out numerical parametric analyses for the joint. By summarizing the experimental and numerical results, two formulae are finally presented to calculate the load-carrying capacity and stiffness of the joint strengthened with stiffening ring on the irregularly-arranged beam.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第3期100-105,共6页
Journal of South China University of Technology(Natural Science Edition)
基金
广东省自然科学基金资助项目(020965)
华南理工大学自然科学基金资助项目
关键词
加强环
节点
承载力
刚度
试验研究
有限元分析
stiffening ring
joint
load-carrying capacity
analysis stiffness
experimental investigation
finite element
