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选取直径均为30 m的空间钢管桁架与辐射梁水平支撑结构作对比,对两个模型分别施加0,800,1 600,2 400 k N的荷载,通过ANSYS有限元软件分析不同荷载作用下的两种结构体系,结果表明:两个有限元模型的位移都随着荷载的增大而增大,在相同荷载作用下,辐射梁支撑体系与空间钢管桁架竖向位移相差不大。杆件受力在弹性范围时,两种结构体系的最大竖向位移随荷载呈明显的线性关系。钢管桁架支撑体系比辐射梁支撑体系承受荷载能力更好。
The space truss with the diameter of 30 m is used to compare with the horizontal support structure of the radiation beam. The loads of 0,800,1,600 and 2,400 kN are respectively applied to the two models. Two kinds of loads under different loads are analyzed by ANSYS finite element software The results show that the displacements of the two finite element models both increase with the increase of the load. Under the same load, the vertical displacement of the support system and the space steel pipe truss are similar. When the rod is under the elastic range, the maximum vertical displacement of the two structural systems is obviously linear with the load. The steel truss support system has better load capacity than the radiation beam support system.