板片空间结构的稳定分析

目前工程上对结构进行缺陷稳定分析的主要办法是一致缺陷模态法。而利用该法对板片空间结构进行缺陷稳定分析得到的并不是结构的最小临界荷载。为此,本文提出了改进的方法,并且通过模型试验加以检验,最后通过随机缺陷模态法得到了改进方法的可靠度。通过以上的检验,本文所提出的改进方法是可行的。

Stability Analysis of the Sheet Space Structure

The consistent imperfect buckling analyses method(CIBAM)is the main approach of analyzing the stability of the structure with the geometrical imperfection.It was limitation that the obtained minimum stability bearing capacity by CIBAM was not the real smallest one for the sheet space structure system.To enable the method to fit the sheet space structures,an improved consistent imperfect buckling analysis method(ICIBAM)was proposed in this paper.The ICIBAM was approved correct by experiments and the dependability of it was got by the stochastic imperfection method.