铁道科学与工程学报2017，Vol.14Issue(1)：87-93,7.
斜拉桥合理施工状态计算方法对比分析研究
Discussion and comparative analysis on calculation method of reasonable construction state of cable stayed bridge
摘要
Abstract
For faster and more accurate to determine the rational construction state of cable-stayed bridges, and make the bridge meet the reasonable bridge state, this article take the basic theory of the unstressed state control method、the backward-forward iteration method and the forward-iteration method as the starting point, and a three-dimensional finite element model is built by using a pedestrian cable-stayed bridge as a project. By com-paring and analyzing the practical application and analysis results of the three methods to determine the reasona-ble construction state , the convergence and the advantages and disadvantages of each method are obtained in the consideration of the shrinkage and creep effect of concrete. The results indicate that the unstressed state control method make the unstressed cable length modified gradually approaching to the reasonable bridge state; The backward-forward iteration method and the forward-iteration method make the final cable force modified gradually approaching to the reasonable bridge state;The unstressed state control method has the fastest conver-gence speed and the highest accuracy, the backward-forward iteration method is slower, the forward-iteration method Is the slowest.关键词
斜拉桥/合理施工状态/合理成桥目标状态/无应力状态控制法/倒拆-正装迭代法/正装迭代法Key words
cable stayed bridge/easonable construction state/reasonable bridge state/the unstressed state con-trol method/the backward-forward iteration method/the forward-iteration method分类
交通工程引用本文复制引用
康春霞,杜仕朝,邬晓光..斜拉桥合理施工状态计算方法对比分析研究[J].铁道科学与工程学报,2017,14(1):87-93,7.基金项目
国家自然科学基金资助项目(51308056) （51308056）
国家西部交通建设科技资助项目(2009319812050) （2009319812050）
陕西省交通运输厅科技资助项目(13-25k) （13-25k）
