方钢管混凝土柱与钢梁连接节点的非线性有限元研究

Nonlinear Finite Element Analysis of Concrete-filled Squared Tubular Column Connected to Steel Beam

针对方钢管混凝土柱与钢梁连接方式问题,研究隔板贯穿式翼缘加楔形板刚接节点变形性能,建立3D有限元模型,钢材采用Von-Mises屈服条件和三线性随动强化本构,混凝土采用弹塑性本构,基于非线性有限元模拟研究低周反复荷载作用下模型节点的滞回耗能性能,对节点抗震性能基本指标进行比较分析,节点有限元分析结果可为设计提供一些参考.

For the problem of concrete-filled squared tubular column connected to steel beam,the deformability of the rigid joint with lugged through flange diaphragm and wedge filter is researched.3D finite element models are established;and the Von-Mises failure criterion and bilinear kinematical hardening stress-strain relationships are used for steel and the elastoplastic stress-strain relationships is used for concrete.Hysteresis behavior of the joints under cyclic loading is analyzed on the basis of nonlinear finite element method;aseismic behavior indexes of the joints is researched and compared;and the result of nonlinear finile element analysis can provide a reference for engineering design.