摘要
本文在索穹顶结构静力计算的基础上 ,根据几何非线性原理 ,考虑索穹顶结构在平衡位置作微小振动时 ,利用“摄动”理论和子空间迭代法 ,计算出肋环型索穹顶结构的低阶频率和相应的振型。并对结构频率随预张力和钢索截面积的变化作了计算分析 ,绘出相应的关系曲线。分析表明 。
Based on the static analysis, the author make use of the perturbation theory and subspace iteration method to calculate the dynamical characteristics of cable dome, or structural low frequency and mode. In this paper, structural frequency variety with different pretension and cable section area are discussed. Analysis indicates that the method and calculated results in the paper have referenced value for the application and research of dynamical response of cable dome structure.
出处
《空间结构》
CSCD
2001年第2期27-32,共6页
Spatial Structures
基金
云南省自然科学基金项目 ( 99E0 0 31M)
