【摘要】 以大连某实际网壳结构为工程背景,应用几何非线性有限元法对周边双层中部单层球面网壳结构进行了全过程分析。借助弧长法跟踪结构的荷载-挠度曲线,研究了球面网壳结构的屈曲过程,探讨了不同规格的杆件截面和周边双层网壳对球面网壳整体稳定性的影响。最后,得到了一些有意义的结论。更多还原

【Abstract】 Based on central-single-layer and peripheral-double-layer spherical lattice shell in some practical engineering in Dalian,the complete deformation process of the spherical lattice shell was analyzed using geometrically nonlinear FEM.The load-deflection response of the spherical shell was tracked by the Arc-length method.The buckling reasons and deflection process of the shell structure were studied.The impaction of different sectional shape of bars and peripheral-double-layer lattice shell on the stability of the whole lattice shell were discussed in the details.In the end,some significant conclusions are obtained.更多还原