空间钢框架结构的弹塑性稳定

Inelastic Stability of Space Steel Frames

本文根据Giberson弹塑性梁单元模型和总势能最小值原理,导出了空间受力杆单元的二阶弹塑性切线刚度矩阵,并建立了空间钢框架结构的二阶弹塑性分析亢法。空间受力杆和缩尺空间框架模型的试验结果不仅验证了本文理论分析方法的正确性,而且反映空间结构的一些受力特性。

According to the Giberson one component model of an inelastic beam and the principle of minimum potential energy, the tangent stiffness matrix of inelastic space members is derived and the method of second-order inelastic analysis for space steel frames is presented as well. The test results of steel members subjected to spatial forces and that of the 1/5 scale space steel frames not only verify that the method is desirable, but also reveal some of the behavior of space steel frames under loading.