# 几何缺陷对索拉穹顶弹塑性承载力的影响分析The Analysis of the Elastoplastic Carrying Capacity of Solar Dome with Geometric Imperfections

Abstract:
Eigenvalue buckling analysis of solar dome was done firstly, then the the buckling modes were got and the most unfavorable mode was pointed. The influence factors of bearing capacity, such as the form and bigness of geometric defect, were discussed. The influence of prestress and the section of rod was further studied. The result shows: The second-order buckling mode is the most unfavorable mode; as the prestress of rop grows, the influence of geometric defect to elastoplastic carrying capacity increases firstly and then decreases; as the section of rod changes, the influence of geometric defect to elastoplastic carrying capacity essentially unchanged.

[1] 董石麟. 我国大跨度空间钢结构的发展与展望[J]. 空间结构, 2000, 6(2): 3-14.

[2] 沈世钊, 陈听. 网壳结构稳定性[M]. 北京: 科学出版社, 1999.

[3] J. Schlaich, H. Schober. Design principles of glass roofs. Proceedings of the International Sym-posium of Lightweight Structures in Civil Engineering, 2002: 812-866.

[4] 中华人民共和国住房与城乡建设部. JGJ61-2003网壳结构技术规程[S]. 北京: 中国建筑工业出版社, 2003.

[5] 石开荣. 大跨椭圆形弦支穹顶结构理论分析与施工实践研究[D]. 东南大学, 2007.

Top