内加劲环的设置对钢管节点性能的影响

Effects of ring-stiffeners on the behaviour steel tubular joints

本文首先介绍了越南国家体育场鼓型钢管节点试验的有关情况.然后利用有限元计算比较了鼓型钢管节点在加劲和无加劲条件下的极限承载力和刚度,并通过若干算例比较了在不同内加劲环参数组合下X型钢管节点的极限承载力.结果表明,内加劲环可以提高钢管节点极限承载力和刚度.

This paper first introduces the experiment on drum-type steel tubular joints adopted in Hanoi International Stadium. The ultimate load-bearing capacity and rigidity of ring-stiffened and unstiffened drum-type steel tubular joints are then compared using the finite element method.Next, several examples are calculated to compare the ultimate bearing capacity of X-type tubular joints under different combinations of ring-stiffener parameters. Results from this study show that ring-stiffeners can improve the ultimate load-bearing capacity and rigidity of tubular joints.