摘要
在静风稳定线性理论的基础上,综合考虑静风荷载非线性和结构几何非线性的影响,采用增量和内外双重迭代的方法对结构进行分析,可避免线性理论对结构抗静风能力的过高估计。利用ANSYS程序APDL语言编写程序对某大跨径斜拉桥静风稳定性进行全过程计算,分析风速逐级增加的过程中,非线性对静风稳定的影响。
On the basis of linear theory of the static wind stability,a method which was used to solve wind-induced lateral torsional buckling problem for long-span cable-stayed bridges was proposed.Nonlinear influences caused by structure and aerostatic load were included in this method,which can aviod overestimating of static wind resistance.The ANSYS/APDL programming language was used to analyze static wind stability of a long span cable-stayed bridge and show the nonlinear influence on aerostatic stability in wind speed increasing process.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2012年第3期369-372,500,共5页
Journal of Chongqing Jiaotong University(Natural Science)
关键词
大跨径斜拉桥
静风稳定性
非线性分析
long-span cable-stayed bridge
aerostatics stability
nonlinear analysis
