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海安电视发射塔是典型的高耸结构,其结构布置不同于传统的电视发射塔,该结构只设有横杆和斜杆,没有主柱,所有的竖向荷载均由斜杆承担,因此海安电视发射塔的整体稳定显得尤为重要。本文利用ANSYS有限元软件对海安电视发射塔分别进行了特征值屈曲分析、初始缺陷屈曲分析和双重非线性分析。对比结果发现,初始缺陷对结构稳定的影响较小,材料非线性对结构稳定的影响较大,对其进行整体稳定分析时,不可忽略材料非线性的影响,为类似结构的稳定性设计提供了参考。
MSC TV Tower is a typical towering structure, its structural layout is different from the traditional TV tower, the structure is only provided with crossbar and diagonal, there is no main column, all the vertical load borne by the diagonal, so MSC TV The overall stability of the tower is particularly important. In this paper, ANSYS finite element software for the MSC TV tower eigenvalue buckling analysis, the initial defect buckling analysis and dual nonlinear analysis. The results show that the initial defect has little effect on the stability of the structure, and the material nonlinearity has a great influence on the stability of the structure. For the overall stability analysis, the influence of material nonlinearity can not be neglected, which provides the stability design for similar structures reference.