高墩大跨度连续刚构桥施工稳定性分析

Stability Analysis of High Pier and Long-span Continuous Rigid Frame Bridge Construction

对于高墩大跨度连续刚构桥,随着墩高的增加其施工难度将逐渐加大,施工过程中的安全问题,尤其是高墩带来的稳定性问题将逐渐凸显,对其进行施工阶段的稳定性分析十分必要。本文依托某高墩大跨连续刚构桥,结合其施工过程和结构体系特性建立有限元模型,对施工阶段不同荷载作用下的第一类及第二类稳定性进行分析以明确结构整体安全特性,可为同类桥梁的设计提供参考。

for the high pier and long-span continuous rigid frame bridge with high pier,increased the difficulty of construction will gradually increase, the security problems in the process of construction, especially the stability problem of high pier will gradually, stability of construction stage analysis is necessary for its. In this paper, based on a high pier and long-span continuous rigid frame bridge, combined with the construction process and the structure characteristics of the finite element model is established, for the first and the role of construction stage under different loads of two kinds of stability analysis to the overall safety characteristics of clear structure,which provide a reference for the design of similar bridge.