摘要
文章综合考虑静风荷载与大跨度斜拉桥几何非线性影响,采用有限元方法,建立了大跨度斜拉桥非线性静风稳定性分析的有限元方程;采用增量法与内外两重迭代相结合的方法,利用ANSYS中参数化语言(APDL)编写了计算程序,对拱塔斜拉桥进行了非线性静风稳定性全过程分析;通过数值算例探讨了梁的位移随风速变化的情况以及初始风攻角对大跨度斜拉桥静风稳定性的影响。
Considering the static wind load and the geometric nonlinear effects of long span cable-stayed bridges structure,and using the finite element method,the finite element equation is presented for the nonlinear aerostatic stability analysis of long span cable-stayed bridges.Using the incremental method and inner-outer double iteration method and the computer program prepared by ANSYS/APDL,the whole process of the nonlinear aerostatic stability of arch tower cable-stayed bridges is analyzed.Finally,the effects of the initial angle of incidence and cable sag on the aerostatic stability of arch tower cable-stayed bridges are discussed.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第4期571-574,共4页
Journal of Hefei University of Technology：Natural Science
基金
土木工程防灾减灾安徽省工程技术研究中心资助项目(2007368)
关键词
拱塔斜拉桥
静风稳定性
几何非线性分析
增量双重迭代法
arch tower cable-stayed bridge
aerostatic stability
geometric nonlinear analysis
incremental double iteration method
