【摘要】 以T型原钢管节点抗弯刚度试验研究为基础,对节点的非线性有限元建模方法进行了校验.揭示了影响节点抗弯刚度的主要参数以及这些参数与抗弯刚度的关系.建议改变传统的把节点简化为刚接或铰接的思想,在节点区域施加弹簧单元,这种方法应该更接近于实际节点的受力情况.更多还原

【Abstract】 The importance of the research on bending rigidity of unstiffened CHS T-joints with fold chord and the present research achievements at home and abroad are introduced.Finite element model simulating the bending rigidity of experiment on unstiffened CHS T-joints is validated.The influence of geometric parameters on the bending rigidity is investigated and explained graphically.The paper suggests that the traditional idea of simplifying the node to rigid joint or hinge joint should be changed and spring element should be exersted in the node area,which is more close to the practical statu of node.更多还原