摘要
基于采用U.L.列式法的结构非线性有限元平衡方程,通过考虑几何非线性效应,建立大跨度斜拉桥几何非线性有限元分析流程。研究表明,采用U.L.建立的方法对大跨度斜拉桥进行几何非线性分析具有较高的计算精度,同时能够合理确定斜拉桥初始索力。
A procedure analyzing geometrical nonlinearity of long-span cable-stayed bridges is proposed considering geometric nonlinear effects based on structural nonlinear finite element equilibrium equation using U.L. formulation. A numerical example is given. The results show that the accuracy of analyzing geometrical nonlinearity of long-span cable-stayed bridges by the presented procedure is validated. The initial cable forces can be well determined.
出处
《交通科技与经济》
2009年第4期37-38,41,共3页
Technology & Economy in Areas of Communications
基金
广东省自然科学基金资助项目(06028131)
深圳职业技术学院重点科技项目(06KJd007)
关键词
大跨度斜拉桥
几何非线性
有限元
初始索力
long-span cable-stayed bridges~ geometrical nonlinearity
finite element method
initial cable force
