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通过大型有限元分析软件ANSYS对跨度60m的局部双层球面网壳结构进行研究和减震分析。研究局部双层球面网壳的自振特性以及约束屈曲支撑对局部双层球面网壳减震效果的主要影响参数和影响规律。通过考虑约束屈曲支撑不同的设置位置和数量,进行相关的减震参数分析。结果表明,局部双层球面网壳自振频率密集;约束屈曲支撑杆件的布置位置对减震效果有较大的影响;约束屈曲支撑设置的数量应综合考虑。
Through the large-scale finite element analysis software ANSYS, the local double-layer spherical reticulated dome with a span of 60m was studied and the damping analysis was carried out. Study on the self-vibration characteristics of local double-layer reticulated domes and the main influence parameters and influence laws of restrained buckling support on the damping effect of local double-layer reticulated domes. The relevant damping parameters are analyzed by considering the different set positions and the number of buckling restraints. The results show that the self-vibration frequency of local double-decker spherical reticular shells is intensive; the placement of restrained buckling brace members has a great influence on the damping effect; and the number of restrained buckling supports should be considered comprehensively.