Research on Ultra-low Cycle Fatigue Testing of Bolt Ball and Circular Steel Pipe Composite Specimens
With the development of social economy,more and more large-span spatial grid structures have become urban shelters,so the safety of spatial grid structures under strong earthquakes is particularly important.To study the ultra-low cycle fatigue performance of bolted ball and circular steel pipe composite specimens,ultra-low cycle fatigue tests were conducted,and relevant data on the ultra-low cycle fatigue failure mode of the composite specimens were obtained.The experimental data shows that the components still exhibit stable hysteresis performance despite overall instability.A comparative analysis was conducted on the effects of 9 bolt diameters on the hysteresis performance,skeleton curve,and stiffness degradation of specimens.The research on the ultra-low cycle fatigue performance of bolted ball node mesh structures has certain reference significance.
万方数据
维普
