中文摘要：

根据机构理论的概念,研究了单层网壳结构的屈曲理论,根据结构屈曲的机理,提出了结构从产生几何软化而导致屈曲的观点,进而给出了屈曲路线跟踪的理论和算法.本文提出的理论和方法可供单层网壳和其他格构结构的屈曲分析参考.

英文摘要：

The authors studied buckling theory of single-layer reticulated shells m term ot the concept ot mechanism theory. Based on mechanism of structural buckling, the ideas that buckling results from structural softening are proposed in the paper. Moreover, theory and method of buckling path are presented： The paper supplies a reference for study on the single-layer reticulated shells and other reticulated structures.