摘要
本文在Murray模型的基础上,采用VonMises屈服准则,推导了在轴向压力影响下的倾斜塑性铰线承载力公式。建立了在弦杆轴向压力影响下,直接焊接不等宽T形方管节点抗弯的塑性铰线模型。得出的节点承载力公式与CIDECT、Kon-ing建议的公式、非线性有限元计算结果及实验结果吻合较好,从而在理论上完善了不等宽T形方管节点的抗弯塑性铰线模型。
Based on Murray′s model, the load carrying capacity of the inclined yield line under the axial compression force is formulated by using Von Mises yield criterion. A new yield line model, which takes load in the main member into account, is developed to calculate the moment capacity of directly welded stepped T type rectangular hollow section (RHS) joints. The validity of the proposed method in this paper is verified by comparing with the test results and analysis results of nonlinear finite element method as well as by empirical formulas given by CIDECT and Koning.
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2003年第4期65-69,共5页
Journal of Building Structures
基金
国家自然科学基金资助项目(50108006)
黑龙江省博士后科研启动金资助项目。
关键词
T形方管
塑性铰线模型
倾斜塑性铰线
非线性
有限元方法
directly welded T type RHS joints
yield line model
inclined yield line
nonlinear finite element method
