高墩大跨径预应力混凝土连续刚构空间仿真方法研究

在我国尤其是西部地区,高墩大跨桥梁建设数量越来越多,其施工安全、承载能力等问题已经引起了广大桥梁工作者的重视。以陕西省禹阎高速公路徐水河特大桥为例,提出建立包括分阶段施工混凝土箱梁、薄壁空心墩、主梁预应力钢束及高墩普通钢筋的空间有限元模型,并实现施工、运营全过程空间仿真分析的思路和方法,为此类桥梁的进一步深入研究提供参考。

Research on Space Simulation Methods for High-pier Large-span Pre-stressed Concrete and Consecutive Steel Structures

Along with the fact that more and more high-pier large-span bridges have been constructed in China,especially in western regions of China,the issues relevant to construction safety,load capacity,etc.have attracted duly attention of many bridge workers.Taking Xushuihe Super Bridge of Yumenkou-Yanliang Expressway in Shanxi Province as an example,the limited space element models including phase construction concrete box beams,thin-wall hollow piers,pre-stressed main beam steel clusters,high piers,and common steel bars,etc.are proposed to be established in this paper.Thoughts and methods are developed for analysis of the space simulation during full-course construction and operation,and references are given for further research on this kind of bridges.