【摘要】 新型拉索-单层柱面网壳结构是一种新型预应力空间结构.利用有限元分析软件AN-SYS建立该新型结构的组合有限元模型,进行特征值屈曲分析和考虑初始缺陷的非线性屈曲分析,较系统地研究了在不同的矢跨比、跨度、预应力、索断面面积、撑杆长度等因素下结构屈曲荷载的变化规律,结果显示这种新型预应力网壳结构比单层柱面网壳结构的稳定承载力有较大程度的提高.更多还原

【Abstract】 The new type cable-single-layer cylindrical reticulated shell structure is a new pre-stress space structure.Its combined finite element models are established by adopting the finite element analysis program ANSYS to make an eigenvalue buckling analysis and a nonlinear buckling analysis of initial defects on them.The authors have systematically studied the rules of variation of the buckling loads.Under such factors as the ratio of the rise to span,span,pre-stress,etc.,The results show that its stability and bearing capacity are greatly enhanced as compared with single-diagonal bracing single-layer cylindrical lattice shell structure.更多还原