摘要
本文讨论了用有限元法分析大跨度拱桥施工阶段的非线性稳定问题。重点研究了施工过程中主拱圈的非线性行为、失稳原因、失稳判别准则和失稳模态，说明了有限元程序实现的方法。基于某跨江大桥施工阶段稳定性分析研究，提出了若干建议。
ln this paper,several problems on nonlinear stability analysis during the construction of long-span bridge arches are discussed.With emphasis on the nonlinear behavior forthe skeleton of the bridge,taking account of the reason,rule and mode of the instability,anumerical procedure by finite element method is developed. Based on the resuIts of stability analysis during the construction of an overriver bridge,some treatments for calculation aresuggested.
出处
《铁道学报》
EI
CSCD
北大核心
1995年第1期76-84,共9页
Journal of the China Railway Society
关键词
非线性
稳定分析
拱桥
有限元法
工程施工
nonlinear stability analysis
long-span bridge arch
instability
finite elementmethod
