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钢管混凝土柱与伸臂桁架连接节点是结构抗侧力体系中的关键节点,节点处连接构件多,且受力复杂。基于武汉世贸中心项目,对项目中该类复杂节点进行受力分析。采用ANSYS和ABAQUS通用有限元分析软件,通过精细化网格划分,并考虑几何非线性和材料非线性,对该节点性能进行分析。两种软件计算的不同构件应力最大值相差均不超过5%,开裂面趋势基本一致,验证了计算结果的准确性。计算结果表明,该节点满足抗震设防烈度地震作用下保持弹性的性能目标。
The connection between the concrete-filled steel tubular column and the yoke truss is a key node in the structure’s anti-side-force system. There are many connecting components at the nodes and the force is complicated. Based on the Wuhan World Trade Center project, the force analysis of such complex nodes in the project is carried out. The finite element analysis software ANSYS and ABAQUS were used to analyze the performance of the node through the fine meshing and taking into account the geometrical nonlinearity and material nonlinearity. The difference between the maximum stress of different components calculated by the two softwares does not exceed 5%, and the trend of cracking surface is basically the same, which verifies the accuracy of the calculation results. The calculation results show that the node meets the seismic performance of earthquake-resistant seismic performance to maintain flexibility.