Seismic Behaviour of CFST Space Intersecting Nodes in an Oblique Mesh

The design of intersecting nodes in high-rise oblique mesh structures is a critical issue. existing research on the meshes mainly focuses plane and monotonic axial compression loads. cannot consider contribution node’s out-of-plane angle floor beam to stiffness actual structures. In this paper, numerical analysis using ABAQUS was conducted investigate mechanical performance space (OMSIN) under cyclic tension loads, provide reference for engineering application seismic regions. Six parameters were considered: angle, symmetry coefficient, constraint restraint, steel content cross-section, concrete strength. study showed that changes thickness tube wall are unfavourable uniform transmission stress. Increasing significantly weakened performance, affects failure mode node. Asymmetric arrangements upper lower angles caused nonlinear development out-of-plane. ultimate load overall compressive specimen positively correlated with vertical constraints should be applied node position components greater than or equal 70°. key factor affecting node, it proportional component. structural design, if aim improve component by increasing content, more enormous set control external displacement strictly. strength stiffness, its influence direction not significant. Finally, dimensionless skeleton curve model established. formula bearing capacity CFST columns fitted obtain calculation yield OMSIN