The stability of shallow truss structures is studied.A geometrically nonlinear critical-point-Eulerian theory is presented for analysis of stability of the trusses with medium oblatenesses.

• 摘要研究了扁桁架结构的稳定性问题，提出了中等扁度桁架稳定分析的几何非线性临界点-欧拉理论。