大跨径拱肋吊装过程中扣塔的稳定性分析

Analysis on fixing tower stability of large-span arch rib during lifting process

介绍了在结构稳定性分析中有限元法的分析原理,以某特大桥为工程背景,对吊装过程中的扣塔稳定性进行了有限元分析,得出了吊装施工过程中扣塔的屈曲临界荷载系数和失稳模态,为同类桥型的施工控制提供了理论基础。

With an introduction on the analytical principle of finite element during structure stability analysis, taking a super large bridge as engineering background, this article carries on finite element analysis on fixing tower stability during lifting process, and obtains the buckling critical load factor and the buckling modal of fixing tower during lifting construction. Thus, it has provided theoretical base for similar bridge construction control.