This paper used Abaqus software to make numerical experimental studies on the seismic performance of the common K-type node in large span steel tower.It analyzed different parameters of the pipes diameter,axial pressure of the main pipe,thickness of the connection plate and gap dimension.At last,it obtained the hysteresis curves,skeleton curves and energy dissipation capacity,received the influence of these parameters on seismic performance of the node.Research shows that the steel pipe node itself has a good seismic performance.When the axial pressure increases,the seismic performance is significantly decreasing.The node prone to fail because of stress concentration.Increasing the main and branch pipe diameter and node plate thickness all can significantly improve the seismic performance the node.The effect of branch pipe gap size on node hysteretic performance improvement is not obvious.
Key words
K-type node of steel tube tower /
Numerical simulation /
Pseudo-static experiment /
Parameter analysis /
Hysteretic performance
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