中文摘要：

以余姚田螺山遗址大跨网壳结构为工程背景,对该工程拱支双层球面网壳结构的设计过程和关键问题进行了探讨,并采用非线性有限元理论对结构进行了稳定性分析。计算结果表明,结构体现出很好的抵抗风荷载的稳定承载能力,适合于结构所处沿海多台风的环境。升温时结构出现很大的薄膜压应力,使结构的稳定承载能力降低。

英文摘要：

The design and analysis of the large span steel latticed shell structure located at Yuyao Tianluoshan relic are introduced,and some key problems are dwelled on in this paper.By the geometrical nonlinear finite element method,the nonlinear stability analysis is carried out.It is shown that the structure has good wind-resisting capacity,which is fit for the circumstance near sea with lots of typhoon.Large compressive membrane stresses arise in the structure under the condition of temperature rise,leading to a significant reduction in the stability load-carrying capacity of the structure.