考虑轴向变形的合理拱轴线的有限元优化

通过对拱圈竖向坐标的调整,以减少弯矩使拱轴线趋向于最理想化的优化方法,利用有限元方法,计入轴向弹性压缩对大跨径拱桥的影响,对拱轴线进行合理的优化,并通过算例计算分析,表明此法是可行的,并提出在大跨度拱桥拱轴线的设计中应考虑拱圈弹性压缩变形的影响。

The Finite Element Optimization of Appropriate Arch Axis Curve Considering Axis Transmutation

The arch axis curve is appropriate optimized considering the effect of the axis elasticity compress on the big span arch bridge by the method of adjusting vertical coordinate of arch rib to reducing the bending moment to obtain the most sublimate arch axis and the method of finite element in this paper, and the this method is testified feasibly by calculating and analyzing the example,and it is put forward considering the effect of the axis elasticity compress in the design of arch axis curve of the big span arch bridge.