箱型柱-H型钢梁的指形板加强型节点滞回性能研究

RESEARCH ON HYSTERETIC BEHAVIOR OF FINGER-SHAPED PLATE REINFORCED CONNECTION BETWEEN H-TYPE STEEL BEAM AND BOX COLUMN

指形板加强型节点是对普通盖板连接节点的一种改进形式。为研究指形板连接的滞回性能,利用有限元分析软件ABAQUS建立三维实体单元模型进行循环加载有限元模拟,验证了有限元模型的有效性。设计了11个试件,与普通盖板连接节点对比分析,并研究了指形板厚度、指形深宽比等参数对该节点滞回性能的影响。分析结果表明:指形板加强型节点具有与普通盖板节点相同的承载力和延性,并有效降低了盖板沿宽度方向的应力分布;指形板的厚度对其滞回性能影响很小;指形深宽比的大小应控制在3.0左右。

The finger-shaped plate（ FP） reinforced connection is an improved form of the common plate connection. In order to study the hysteretic behavior of the FP connection,the finite element analysis software ABAQUS was used to establish the three-dimensional solid element model to simulate the model under cyclic loading,and the validity of the model was verified. The influence of the parameters such as the thickness of the finger plate and the aspect ratio of the finger on the hysteretic behavior of the joint was studied. The results showed that the FP connection had the same bearing capacity and ductility as the common plate,and the stress distribution in the width direction of the finger plate was reduced effectively. The thickness of the finger plate had little effect on the hysteresis behavior. The size of the finger aspect ratio should be controlled about 3. 0.