对某工程中的钢管混凝土柱外加强环式节点进行数值模拟,研究了其在弹性阶段的受力特点。模拟表明:加强环板的受力比较均匀,设计上有较大强度剩余;腹板和翼缘板在加载区域出现了一定程度的应力集中。整个节点在工作状态下,各构件的强度只达到了设计强度的一半左右,说明节点有足够的强度储备来应对特殊情况。 The numerical simulation of a concrete filled steel tubular column strengthened ring node in a project is carried out and its mechanical characteristics under the elastic phase are studied. The simulation results show that the stress of reinforcing ring plate is more uniform and the design has larger strength; the stress concentration of web plate and flange plate in loading area appears. The entire node in the working state, the strength of each component only reached about half of the design strength, indicating that the node has sufficient strength reserves to deal with special circumstances.