大跨径提篮拱的拱肋侧倾角对稳定性影响的研究

Study of Effect of Arch Rib Tilting Angle on Stability of Long Span Basket Handle Arch

以重庆菜园坝长江大桥为例,利用有限元方法研究提篮拱的拱肋侧倾角对全桥稳定性的影响,给出拱肋的合理侧倾角。结果表明,拱肋侧倾角的选择对拱桥的整体稳定性有重要的影响,拱肋侧倾角以10°左右为佳。

Taking the Caiyuanba Changjiang paper makes a study of the effect of tilting angle River Bridge in Chongqing as an example, this of basket handle arch rib on the stability of the overall arch bridge and gives the rational tilting angle of the arch rib, using the finite element method. The results of the study indicate that the selection of the tilting angle has important effect on the global stability of the arch bridge and the tilting angle of the arch rib should be preferably about 10°.