【摘要】 利用非线性有限元软件ANSYS,对钢材采用Von-Mises屈服条件和双线性随动强化本构关系,对混凝土采用前人总结的弹塑性本构关系,对混凝土裂缝和高强螺栓连接的面-面接触等问题采用ANSYS提供的判别准则,采用三维实体单元对带内隔板的方钢管混凝土柱-钢梁栓焊连接节点进行了三维建模,模拟分析了钢管混凝土柱中钢材、混凝土强度等级等因素在单调加载和低周反复加载下对节点受力性能的影响,并对节点抗震指标进行了分析比较,得到的有限元分析结果可供试验和设计参考。更多还原

【Abstract】 The Von-Mises failure criterion and bilinear kinematical hardening stress-strain relationships have been used for steel and the elasticplastic stress-strain relationships used for concrete.The concrete cracking and contact-friction of bolts connections are used for the discriminating criteria in terms of ANSYS.The 3D models of bolt-weld joint with internal diaphragms by 3D solid elements are founded.And the effects of changes in steel and concrete strength on joint behaviors under the monotonic loading and cyclic loading are be analyzed.And then,seismic indicators are analyzed.The results of nonlinear FEM analyses can provide a reference for experiment and engineering design.更多还原