相贯节点刚度对某单层网壳结构整体稳定性的影响

将回归得到的X形相贯节点轴向刚度、平面外弯曲刚度及平面内弯曲刚度的计算公式引入管结构分析设计软件STCAD,对某体育馆单层网壳屋盖结构进行了静力和整体稳定性分析。结果表明,X形相贯节点的刚度随着结构内力的增加而降低,节点的非刚性性能对单层网壳的变形及整体稳定性有显著影响。

Influence of joint stiffness on stability behavior of a single-layer reticulated shell

Importing the computational formulas of tubular X-joint stiffness,including axial stiffness,out-of-plane bending stiffness and in-plane bending stiffness,into the design software STCAD for tubular structures,the static analysis and global stability analysis were carried out aiming at a single-layer reticulated shell of a gymnasium with tubular X-joints.The analysis results show that the stiffness of tubular X-joints decreases with the increasing structural loads.The non-rigidity characteristics of tubular X...