某大型轻钢屋盖结构设计与分析

Structural Design and Analysis of Some Huge Light-gauge Steel Roof

武汉中国光谷广场轻钢屋盖采用了三角形立体钢管桁架及单层椭圆旋转壳结构形式,分析了立体钢管桁架节点设计计算假定对结构计算的影响;对无间隙相贯管节点中不可见相贯线是否必须进行焊接进行了分析,介绍了足尺寸节点试验的情况;应用非线性有限元程序对单层椭圆旋转壳进行了整体稳定分析,并介绍了网壳的节点设计情况.

In the case of Wuhan · China Optics Valley Square, the roof of light-gauge steel adopts the triangle three-dimensional steel-pipe truss and single-layer ellipse rotary shell. The design situation of steel roof is introduced, and the influence of the joint design hypothesis of three-dimensional steel pipe on the structural computation is analyzed; and then whether the invisible continuous line composed of seamless continuous joint in the pipe should be welded, is discussed; besides, the experiment situation of joints is also introduced. With the nonlinear finite element program, the whole stability of the single-layer elliptic rotary shell is analyzed; and the joint design of the reticulated shell is introduced.