超高层建筑结构设计中圆钢管节点抗压承载力研究

Compressive bearing capacity of circular steel tubular joints in super tall building design

通过有限元软件ABAQUS建立主管灌混凝土平面X型圆钢管节点模型,对其承载力进行分析研究。通过已有试验对数值分析模型进行了有效性验证,得到了其荷载—位移关系曲线以及应力与应变云图。为进一步研究影响其强度的因素,对数值分析模型进行变参数分析,主要通过改变支管强度、主管强度以及主管与支管间角度对其深入分析,得出了一些有意义的结论。

The model of concrete filled chord circular section X-joints is established in ABAQUS, and the bearing capacity is analyzed. The validity of the numerical analysis model has been verified by experiments, and the load displacement curves, stress and strain curves are obtained. Factors for further research the impact strength, the numerical analysis model of variable parameters, mainly by changing the branch strength, in-depth analysis on the strength and charge of main and branch angles, some meaningfill conclusions are drann.