钢管混凝土梁柱节点域轴压非线性屈曲分析

摘要

通过对钢管混凝土外加强环式节点的有限元分析,得到了节点域在梁端弯曲荷载和轴向压力作用下的屈曲现象,指出当轴压比超过0.6后,外加强环式节点有屈曲现象发生,这一点应引起设计人员足够重视。%Based on the finite element analysis of external strengthening joint of concrete filled steel tube,the article finds out the buckling phenomenon of joint domain under the beam end bending load and axial pressure,and points out that when the axial-load ration excesses 0.6,buckling phenomenon will happen at external strengthening joint,which should be cared by the designers.